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Date: Mon, 13 Dec 2021 07:28:26 -0800
From: syzbot <syzbot+9ca499bb57a2b9e4c652@...kaller.appspotmail.com>
To: glider@...gle.com, jack@...e.com, linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com
Subject: [syzbot] KMSAN: uninit-value in udf_evict_inode (2)
Hello,
syzbot found the following issue on:
HEAD commit: 8b936c96768e kmsan: core: remove the accidentally committe..
git tree: https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=12c9f1beb00000
kernel config: https://syzkaller.appspot.com/x/.config?x=e00a8959fdd3f3e8
dashboard link: https://syzkaller.appspot.com/bug?extid=9ca499bb57a2b9e4c652
compiler: clang version 14.0.0 (git@...hub.com:llvm/llvm-project.git 0996585c8e3b3d409494eb5f1cad714b9e1f7fb5), GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: i386
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9ca499bb57a2b9e4c652@...kaller.appspotmail.com
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000)
=====================================================
BUG: KMSAN: uninit-value in udf_evict_inode+0x2b6/0x830 fs/udf/inode.c:148
udf_evict_inode+0x2b6/0x830 fs/udf/inode.c:148
evict+0x4f7/0xdc0 fs/inode.c:590
iput_final fs/inode.c:1670 [inline]
iput+0xc5d/0x1110 fs/inode.c:1696
udf_new_inode+0x5d2/0x16e0 fs/udf/ialloc.c:89
udf_tmpfile+0x7e/0x2d0 fs/udf/namei.c:631
vfs_tmpfile+0x2d9/0x5b0 fs/namei.c:3474
do_tmpfile+0x29f/0x6c0 fs/namei.c:3509
path_openat+0x4116/0x5dd0 fs/namei.c:3550
do_filp_open+0x306/0x760 fs/namei.c:3586
do_sys_openat2+0x263/0x8f0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_compat_sys_openat fs/open.c:1288 [inline]
__se_compat_sys_openat fs/open.c:1286 [inline]
__ia32_compat_sys_openat+0x353/0x3c0 fs/open.c:1286
do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
__do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
Uninit was stored to memory at:
udf_new_inode+0xac1/0x16e0 fs/udf/ialloc.c:67
udf_tmpfile+0x7e/0x2d0 fs/udf/namei.c:631
vfs_tmpfile+0x2d9/0x5b0 fs/namei.c:3474
do_tmpfile+0x29f/0x6c0 fs/namei.c:3509
path_openat+0x4116/0x5dd0 fs/namei.c:3550
do_filp_open+0x306/0x760 fs/namei.c:3586
do_sys_openat2+0x263/0x8f0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_compat_sys_openat fs/open.c:1288 [inline]
__se_compat_sys_openat fs/open.c:1286 [inline]
__ia32_compat_sys_openat+0x353/0x3c0 fs/open.c:1286
do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
__do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
Uninit was stored to memory at:
udf_alloc_inode+0x28a/0x2c0 fs/udf/super.c:149
alloc_inode fs/inode.c:235 [inline]
new_inode_pseudo+0xa6/0x5a0 fs/inode.c:944
new_inode+0x5a/0x3c0 fs/inode.c:973
udf_new_inode+0x139/0x16e0 fs/udf/ialloc.c:60
udf_tmpfile+0x7e/0x2d0 fs/udf/namei.c:631
vfs_tmpfile+0x2d9/0x5b0 fs/namei.c:3474
do_tmpfile+0x29f/0x6c0 fs/namei.c:3509
path_openat+0x4116/0x5dd0 fs/namei.c:3550
do_filp_open+0x306/0x760 fs/namei.c:3586
do_sys_openat2+0x263/0x8f0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_compat_sys_openat fs/open.c:1288 [inline]
__se_compat_sys_openat fs/open.c:1286 [inline]
__ia32_compat_sys_openat+0x353/0x3c0 fs/open.c:1286
do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
__do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
Uninit was created at:
__alloc_pages+0xbc7/0x10a0 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
alloc_slab_page mm/slub.c:1810 [inline]
allocate_slab+0x287/0x1c20 mm/slub.c:1947
new_slab mm/slub.c:2010 [inline]
___slab_alloc+0xbdf/0x1e90 mm/slub.c:3039
__slab_alloc mm/slub.c:3126 [inline]
slab_alloc_node mm/slub.c:3217 [inline]
slab_alloc mm/slub.c:3259 [inline]
kmem_cache_alloc+0xbb3/0x11c0 mm/slub.c:3264
udf_alloc_inode+0x60/0x2c0 fs/udf/super.c:139
alloc_inode fs/inode.c:235 [inline]
new_inode_pseudo+0xa6/0x5a0 fs/inode.c:944
new_inode+0x5a/0x3c0 fs/inode.c:973
udf_new_inode+0x139/0x16e0 fs/udf/ialloc.c:60
udf_tmpfile+0x7e/0x2d0 fs/udf/namei.c:631
vfs_tmpfile+0x2d9/0x5b0 fs/namei.c:3474
do_tmpfile+0x29f/0x6c0 fs/namei.c:3509
path_openat+0x4116/0x5dd0 fs/namei.c:3550
do_filp_open+0x306/0x760 fs/namei.c:3586
do_sys_openat2+0x263/0x8f0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_compat_sys_openat fs/open.c:1288 [inline]
__se_compat_sys_openat fs/open.c:1286 [inline]
__ia32_compat_sys_openat+0x353/0x3c0 fs/open.c:1286
do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
__do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
CPU: 1 PID: 9774 Comm: syz-executor.4 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================
---
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.
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