Re: [syzbot] [jfs?] UBSAN: array-index-out-of-bounds in dtDelete

[syzbot]

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
kernel BUG in jfs_evict_inode

------------[ cut here ]------------
kernel BUG at fs/jfs/inode.c:169!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5776 Comm: syz-executor Not tainted 6.14.0-rc7-syzkaller-g81e4f8d68c66-dirty #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:jfs_evict_inode+0x434/0x440 fs/jfs/inode.c:169
Code: df e8 00 e8 d4 fe e9 1d fe ff ff e8 96 a8 6d fe 48 c7 c7 60 42 f5 8e 4c 89 ee e8 77 24 da 01 e9 92 fd ff ff e8 7d a8 6d fe 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900029ffab8 EFLAGS: 00010293
RAX: ffffffff83543803 RBX: ffff888042646f58 RCX: ffff88801f43c880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880426472d0
RBP: ffffc900029ffc30 R08: ffffffff825ef183 R09: 1ffffffff28a9b2c
R10: dffffc0000000000 R11: ffffffff83541530 R12: ffff8880426472d0
R13: ffff888042647350 R14: dffffc0000000000 R15: ffff888042642ad0
FS:  00005555647e6500(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555648015c8 CR3: 0000000058ab8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 evict+0x4e8/0x9a0 fs/inode.c:796
 dispose_list fs/inode.c:845 [inline]
 evict_inodes+0x6f6/0x790 fs/inode.c:899
 generic_shutdown_super+0xa0/0x2d0 fs/super.c:627
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f885038e497
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 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 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffebd08a8a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f885040e08c RCX: 00007f885038e497
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffebd08a960
RBP: 00007ffebd08a960 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffebd08b9f0
R13: 00007f885040e08c R14: 000000000001eab0 R15: 00007ffebd08ba30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:jfs_evict_inode+0x434/0x440 fs/jfs/inode.c:169
Code: df e8 00 e8 d4 fe e9 1d fe ff ff e8 96 a8 6d fe 48 c7 c7 60 42 f5 8e 4c 89 ee e8 77 24 da 01 e9 92 fd ff ff e8 7d a8 6d fe 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900029ffab8 EFLAGS: 00010293
RAX: ffffffff83543803 RBX: ffff888042646f58 RCX: ffff88801f43c880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880426472d0
RBP: ffffc900029ffc30 R08: ffffffff825ef183 R09: 1ffffffff28a9b2c
R10: dffffc0000000000 R11: ffffffff83541530 R12: ffff8880426472d0
R13: ffff888042647350 R14: dffffc0000000000 R15: ffff888042642ad0
FS:  00005555647e6500(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00987e000 CR3: 0000000058ab8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


Tested on:

commit:         81e4f8d6 Merge tag 'pmdomain-v6.14-rc4' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=135c25e4580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=27515cfdbafbb90d
dashboard link: https://syzkaller.appspot.com/bug?extid=4f9c823a6f63d87491ba
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=171c644c580000