Hello, syzbot found the following issue on: HEAD commit: 478a351ce0d6 Merge tag 'net-6.3-rc3' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1231039ec80000 kernel config: https://syzkaller.appspot.com/x/.config?x=9688428cfef5e8d5 dashboard link: https://syzkaller.appspot.com/bug?extid=b678a3f04e9bdedb6cba compiler: Debian clang version 15.0.7, 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/6ed6e770a183/disk-478a351c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/534bea112600/vmlinux-478a351c.xz kernel image: https://storage.googleapis.com/syzbot-assets/67569395f0b5/bzImage-478a351c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b678a3f04e9bdedb6cba@xxxxxxxxxxxxxxxxxxxxxxxxx BUG at fs/jfs/jfs_logmgr.c:1588 assert(list_empty(&log->cqueue)) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_logmgr.c:1588! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5110 Comm: syz-executor.1 Not tainted 6.3.0-rc2-syzkaller-00363-g478a351ce0d6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:jfs_flush_journal+0xeb7/0xec0 fs/jfs/jfs_logmgr.c:1588 Code: ff e8 dd 70 99 07 e8 b8 81 83 fe 48 c7 c7 40 20 21 8b 48 c7 c6 40 1b 21 8b ba 34 06 00 00 48 c7 c1 80 20 21 8b e8 79 51 97 07 <0f> 0b 0f 1f 80 00 00 00 00 f3 0f 1e fa 55 41 56 53 49 be 00 00 00 RSP: 0018:ffffc90004abfae0 EFLAGS: 00010246 RAX: 0000000000000040 RBX: ffff88805be811a8 RCX: a0f2929d95c89200 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90004abfc20 R08: ffffffff816dfe9c R09: fffff52000957f15 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000957f68 R13: dffffc0000000000 R14: ffff88805be81000 R15: ffff88805be81000 FS: 0000555556a18400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c002c99000 CR3: 0000000061716000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> jfs_umount+0x170/0x3a0 fs/jfs/jfs_umount.c:58 jfs_put_super+0x8a/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x134/0x340 fs/super.c:491 kill_block_super+0x7e/0xe0 fs/super.c:1398 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe2aba8d567 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:00007ffde8e74ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2aba8d567 RDX: 00007ffde8e74d7b RSI: 000000000000000a RDI: 00007ffde8e74d70 RBP: 00007ffde8e74d70 R08: 00000000ffffffff R09: 00007ffde8e74b40 R10: 0000555556a198b3 R11: 0000000000000246 R12: 00007fe2abae6b74 R13: 00007ffde8e75e30 R14: 0000555556a19810 R15: 00007ffde8e75e70 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jfs_flush_journal+0xeb7/0xec0 fs/jfs/jfs_logmgr.c:1588 Code: ff e8 dd 70 99 07 e8 b8 81 83 fe 48 c7 c7 40 20 21 8b 48 c7 c6 40 1b 21 8b ba 34 06 00 00 48 c7 c1 80 20 21 8b e8 79 51 97 07 <0f> 0b 0f 1f 80 00 00 00 00 f3 0f 1e fa 55 41 56 53 49 be 00 00 00 RSP: 0018:ffffc90004abfae0 EFLAGS: 00010246 RAX: 0000000000000040 RBX: ffff88805be811a8 RCX: a0f2929d95c89200 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90004abfc20 R08: ffffffff816dfe9c R09: fffff52000957f15 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000957f68 R13: dffffc0000000000 R14: ffff88805be81000 R15: ffff88805be81000 FS: 0000555556a18400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c002c99000 CR3: 0000000061716000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
