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Message-ID: <CACT4Y+bATweY=FD-9+FN3nyTjuN7mNy6QM8y6GeSzPdjzo4R-w@mail.gmail.com>
Date: Wed, 12 Oct 2022 12:26:09 +0200
From: Dmitry Vyukov <dvyukov@...gle.com>
To: Herbert Xu <herbert@...dor.apana.org.au>
Cc: syzbot <syzbot+104c2a89561289cec13e@...kaller.appspotmail.com>,
"Theodore Y. Ts'o" <tytso@....edu>,
Jaegeuk Kim <jaegeuk@...nel.org>,
Eric Biggers <ebiggers@...nel.org>,
linux-fscrypt@...r.kernel.org, davem@...emloft.net,
linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] memory leak in crypto_create_tfm_node
On Wed, 12 Oct 2022 at 11:23, Herbert Xu <herbert@...dor.apana.org.au> wrote:
>
> Hi:
>
> I presume this is a leak in fscrypt (or perhaps something at an
> even higher level).
Eric sent this:
[PATCH] fscrypt: fix keyring memory leak on mount failure
https://lore.kernel.org/all/20221011213838.209879-1-ebiggers@kernel.org/
> Thanks,
>
> On Tue, Oct 11, 2022 at 01:46:41PM -0700, syzbot wrote:
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: 4c86114194e6 Merge tag 'iomap-6.1-merge-1' of git://git.ke..
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=104827bc880000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=10f41fbb818af57a
> > dashboard link: https://syzkaller.appspot.com/bug?extid=104c2a89561289cec13e
> > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17a1d5fa880000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12f77e34880000
> >
> > Downloadable assets:
> > disk image: https://storage.googleapis.com/syzbot-assets/47a35ffaaa39/disk-4c861141.raw.xz
> > vmlinux: https://storage.googleapis.com/syzbot-assets/cc11d48eaf17/vmlinux-4c861141.xz
> > mounted in repro: https://storage.googleapis.com/syzbot-assets/c14465c5ddba/mount_0.gz
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+104c2a89561289cec13e@...kaller.appspotmail.com
> >
> > BUG: memory leak
> > unreferenced object 0xffff8881024bd800 (size 512):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> > hex dump (first 32 bytes):
> > d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810eb2e740 (size 32):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> > hex dump (first 32 bytes):
> > d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> > [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> > [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> > [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> > [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> > [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a9a1800 (size 2048):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> > hex dump (first 32 bytes):
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > backtrace:
> > [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> > [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> > [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a820800 (size 1024):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> > hex dump (first 32 bytes):
> > 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> > 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> > backtrace:
> > [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> > [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> > [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff8881024bd800 (size 512):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> > hex dump (first 32 bytes):
> > d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810eb2e740 (size 32):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> > hex dump (first 32 bytes):
> > d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> > [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> > [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> > [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> > [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> > [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a9a1800 (size 2048):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> > hex dump (first 32 bytes):
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > backtrace:
> > [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> > [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> > [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a820800 (size 1024):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> > hex dump (first 32 bytes):
> > 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> > 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> > backtrace:
> > [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> > [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> > [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff8881024bd800 (size 512):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> > hex dump (first 32 bytes):
> > d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810eb2e740 (size 32):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> > hex dump (first 32 bytes):
> > d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> > [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> > [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> > [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> > [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> > [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a9a1800 (size 2048):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> > hex dump (first 32 bytes):
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > backtrace:
> > [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> > [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> > [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a820800 (size 1024):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> > hex dump (first 32 bytes):
> > 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> > 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> > backtrace:
> > [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> > [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> > [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff8881024bd800 (size 512):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> > hex dump (first 32 bytes):
> > d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810eb2e740 (size 32):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> > hex dump (first 32 bytes):
> > d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> > [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> > [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> > [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> > [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> > [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a9a1800 (size 2048):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> > hex dump (first 32 bytes):
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > backtrace:
> > [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> > [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> > [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a820800 (size 1024):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> > hex dump (first 32 bytes):
> > 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> > 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> > backtrace:
> > [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> > [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> > [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff8881024bd800 (size 512):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> > hex dump (first 32 bytes):
> > d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810eb2e740 (size 32):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> > hex dump (first 32 bytes):
> > d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> > 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> > backtrace:
> > [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> > [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> > [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> > [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> > [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> > [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> > [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> > [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> > [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> > [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> > [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> > [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a9a1800 (size 2048):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> > hex dump (first 32 bytes):
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > backtrace:
> > [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> > [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> > [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > BUG: memory leak
> > unreferenced object 0xffff88810a820800 (size 1024):
> > comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> > hex dump (first 32 bytes):
> > 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> > 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> > backtrace:
> > [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> > [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> > [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> > [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> > [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> > [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> > [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> > [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> > [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> > [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> > [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> > [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> > [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> > [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> > [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> > [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> > [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> > [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> > [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> > [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> > [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> >
> > executing program
> > executing program
> > executing program
> >
> >
> > ---
> > This report is generated by a bot. It may contain errors.
> > See https://goo.gl/tpsmEJ for more information about syzbot.
> > syzbot engineers can be reached at syzkaller@...glegroups.com.
> >
> > syzbot will keep track of this issue. See:
> > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> > syzbot can test patches for this issue, for details see:
> > https://goo.gl/tpsmEJ#testing-patches
>
> --
> Email: Herbert Xu <herbert@...dor.apana.org.au>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
>
> --
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