linux-kernel - [syzbot] WARNING in udf_add_free

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Date:   Sat, 05 Nov 2022 06:01:44 -0700
From:   syzbot <syzbot+46e1bd3863f22513085b@...kaller.appspotmail.com>
To:     jack@...e.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: [syzbot] WARNING in udf_add_free_space

Hello,

syzbot found the following issue on:

HEAD commit:    b229b6ca5abb Merge tag 'perf-tools-fixes-for-v6.1-2022-10-..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11bac051880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a66c6c673fb555e8
dashboard link: https://syzkaller.appspot.com/bug?extid=46e1bd3863f22513085b
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/ba5b49fa77de/disk-b229b6ca.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7c061f2ae4dc/vmlinux-b229b6ca.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bc45c1300e9b/bzImage-b229b6ca.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+46e1bd3863f22513085b@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 3638 at fs/udf/udfdecl.h:114 udf_add_free_space.isra.0+0x1b2/0x200 fs/udf/udfdecl.h:114
Modules linked in:
CPU: 0 PID: 3638 Comm: syz-executor.5 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:udf_add_free_space.isra.0+0x1b2/0x200 fs/udf/udfdecl.h:114
Code: 02 84 c0 74 04 3c 03 7e 25 c7 83 50 01 00 00 01 00 00 00 5b 5d 41 5c 41 5d e9 9a 83 a8 fe e8 95 83 a8 fe 0f 0b e8 8e 83 a8 fe <0f> 0b eb b2 e8 45 d4 f4 fe eb d4 e8 de d3 f4 fe e9 6b fe ff ff e8
RSP: 0018:ffffc9000465f608 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888037ff6400 RCX: 0000000000000000
RDX: ffff888023bb57c0 RSI: ffffffff82d418f2 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffffffff17f25f9 R12: ffff88802b2be000
R13: 0000000000000000 R14: 0000000000000020 R15: ffff88808b2a9490
FS:  00005555562f1400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe2c217f1b8 CR3: 000000008261b000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 udf_table_free_blocks fs/udf/balloc.c:384 [inline]
 udf_free_blocks+0x42c/0x15c0 fs/udf/balloc.c:662
 extent_trunc+0x348/0x3c0 fs/udf/truncate.c:56
 udf_truncate_extents+0x2d3/0x930 fs/udf/truncate.c:230
 udf_setsize+0x3de/0x1080 fs/udf/inode.c:1276
 udf_evict_inode+0x35c/0x580 fs/udf/inode.c:145
 evict+0x2ed/0x6b0 fs/inode.c:664
 iput_final fs/inode.c:1747 [inline]
 iput.part.0+0x59b/0x880 fs/inode.c:1773
 iput+0x58/0x70 fs/inode.c:1763
 udf_free_partition fs/udf/super.c:279 [inline]
 udf_sb_free_partitions.isra.0+0x325/0x560 fs/udf/super.c:306
 udf_put_super+0x133/0x220 fs/udf/super.c:2361
 generic_shutdown_super+0x154/0x410 fs/super.c:491
 kill_block_super+0x97/0xf0 fs/super.c:1427
 deactivate_locked_super+0x94/0x160 fs/super.c:331
 deactivate_super+0xad/0xd0 fs/super.c:362
 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186
 task_work_run+0x16b/0x270 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f924548ca17
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc94d110d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f924548ca17
RDX: 00007ffc94d111ab RSI: 000000000000000a RDI: 00007ffc94d111a0
RBP: 00007ffc94d111a0 R08: 00000000ffffffff R09: 00007ffc94d10f70
R10: 00005555562f28b3 R11: 0000000000000246 R12: 00007f92454e5826
R13: 00007ffc94d12260 R14: 00005555562f2810 R15: 00007ffc94d122a0
 </TASK>


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