BUG at fs/jfs/jfs_logmgr.c:1588 assert(list_empty(&log->cqueue)) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_logmgr.c:1588! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 17279 Comm: syz.5.1759 Tainted: G W 6.17.0-rc1-syzkaller-00214-g99bade344cfa #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:jfs_flush_journal+0xeb2/0xed0 fs/jfs/jfs_logmgr.c:1588 Code: e9 07 f6 ff ff e8 7e fb 86 fe 48 c7 c7 e0 a4 43 8b 48 c7 c6 e0 9f 43 8b ba 34 06 00 00 48 c7 c1 20 a5 43 8b e8 bf f0 ef fd 90 <0f> 0b f3 0f 1e fa e8 53 fb 86 fe bf 02 00 00 00 e8 59 59 58 fe e9 RSP: 0018:ffffc90004cb7b20 EFLAGS: 00010246 RAX: 0000000000000040 RBX: dffffc0000000000 RCX: be4df13f8c618a00 RDX: ffffc90017277000 RSI: 0000000000004dfc RDI: 0000000000004dfd RBP: ffffc90004cb7c60 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff52000996f09 R12: 00000000000000c7 R13: ffff8880394f1a18 R14: ffff8880394f1800 R15: ffff8880394f1ad8 FS: 00007f9d599d66c0(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7a1fcbf3cb CR3: 00000000a10f6000 CR4: 00000000003526f0 Call Trace: jfs_umount_rw+0x75/0x130 fs/jfs/jfs_umount.c:134 jfs_reconfigure+0x6f6/0xa00 fs/jfs/super.c:421 reconfigure_super+0x224/0x890 fs/super.c:1077 do_remount fs/namespace.c:3314 [inline] path_mount+0xd18/0xfe0 fs/namespace.c:4112 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4321 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9d5b76ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9d599d6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f9d5b995fa0 RCX: 00007f9d5b76ebe9 RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000000 RBP: 00007f9d5b7f1e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000021 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9d5b996038 R14: 00007f9d5b995fa0 R15: 00007ffcf65ee568 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jfs_flush_journal+0xeb2/0xed0 fs/jfs/jfs_logmgr.c:1588 Code: e9 07 f6 ff ff e8 7e fb 86 fe 48 c7 c7 e0 a4 43 8b 48 c7 c6 e0 9f 43 8b ba 34 06 00 00 48 c7 c1 20 a5 43 8b e8 bf f0 ef fd 90 <0f> 0b f3 0f 1e fa e8 53 fb 86 fe bf 02 00 00 00 e8 59 59 58 fe e9 RSP: 0018:ffffc90004cb7b20 EFLAGS: 00010246 RAX: 0000000000000040 RBX: dffffc0000000000 RCX: be4df13f8c618a00 RDX: ffffc90017277000 RSI: 0000000000004dfc RDI: 0000000000004dfd RBP: ffffc90004cb7c60 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff52000996f09 R12: 00000000000000c7 R13: ffff8880394f1a18 R14: ffff8880394f1800 R15: ffff8880394f1ad8 FS: 00007f9d599d66c0(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7a1fcbf3cb CR3: 00000000a10f6000 CR4: 00000000003526f0