syzbot

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kernel BUG at fs/jfs/inode.c:175!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4370 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:jfs_evict_inode+0x42d/0x430 fs/jfs/inode.c:175
Code: e6 fe e9 e0 fd ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 23 fe ff ff 4c 89 f7 e8 9d aa e6 fe e9 16 fe ff ff e8 83 9f 95 fe <0f> 0b 90 41 57 41 56 41 54 53 48 89 fb 49 bc 00 00 00 00 00 fc ff
RSP: 0018:ffffc900032f7ac0 EFLAGS: 00010293
RAX: ffffffff82ecd50d RBX: ffff888068ff3bb0 RCX: ffff88802ff3d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888068ff3bb0
RBP: 0000000000000001 R08: ffffffff90af7357 R09: 1ffffffff215ee6a
R10: dffffc0000000000 R11: fffffbfff215ee6b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888068ff3838 R15: ffff888068ff3bd8
FS:  000055555761d500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555557638a28 CR3: 000000005affa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 evict+0x4c9/0x8d0 fs/inode.c:705
 dispose_list fs/inode.c:738 [inline]
 evict_inodes+0x60c/0x6a0 fs/inode.c:792
 generic_shutdown_super+0x93/0x340 fs/super.c:480
 kill_block_super+0x7c/0xe0 fs/super.c:1470
 deactivate_locked_super+0x93/0xf0 fs/super.c:332
 cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191
 task_work_run+0x1d0/0x260 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fbbc6f9da57
Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffdae4d9cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fbbc7032048 RCX: 00007fbbc6f9da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdae4d9db0
RBP: 00007ffdae4d9db0 R08: 00007ffdae4dadb0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdae4dae40
R13: 00007fbbc7032048 R14: 00000000000164dd R15: 00007ffdae4dae80
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:jfs_evict_inode+0x42d/0x430 fs/jfs/inode.c:175
Code: e6 fe e9 e0 fd ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 23 fe ff ff 4c 89 f7 e8 9d aa e6 fe e9 16 fe ff ff e8 83 9f 95 fe <0f> 0b 90 41 57 41 56 41 54 53 48 89 fb 49 bc 00 00 00 00 00 fc ff
RSP: 0018:ffffc900032f7ac0 EFLAGS: 00010293
RAX: ffffffff82ecd50d RBX: ffff888068ff3bb0 RCX: ffff88802ff3d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888068ff3bb0
RBP: 0000000000000001 R08: ffffffff90af7357 R09: 1ffffffff215ee6a
R10: dffffc0000000000 R11: fffffbfff215ee6b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888068ff3838 R15: ffff888068ff3bd8
FS:  000055555761d500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc5d5c52000 CR3: 000000005affa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400