BUG at fs/jfs/jfs_txnmgr.c:663 assert(last) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:663! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:txLock+0x1bdb/0x1d10 fs/jfs/jfs_txnmgr.c:663 Code: e9 c5 f7 ff ff e8 85 4e 5c fe 48 c7 c7 60 8b 0c 8c 48 c7 c6 59 87 0c 8c ba 97 02 00 00 48 c7 c1 80 8c 0c 8c e8 96 b7 bd fd 90 <0f> 0b e8 5e 4e 5c fe 48 c7 c7 40 8d 0c 8c e8 82 b7 bd fd 48 c7 c7 RSP: 0018:ffffc90003a0f440 EFLAGS: 00010246 RAX: 000000000000002b RBX: 0000000000000000 RCX: 6c549d33912d8f00 RDX: ffffc90020802000 RSI: 000000000000279f RDI: 00000000000027a0 RBP: ffffc90003a0f570 R08: ffffc90003a0f1c7 R09: 1ffff92000741e38 R10: dffffc0000000000 R11: fffff52000741e39 R12: 0000000000000000 R13: ffffc90001026000 R14: 0000000000000000 R15: 1ffff92000204c00 FS: 00007f044db846c0(0000) GS:ffff88808c848000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0441bff000 CR3: 0000000043311000 CR4: 0000000000352ef0 Call Trace: diWrite+0x444/0x1f60 fs/jfs/jfs_imap.c:654 txCommit+0x83a/0x54a0 fs/jfs/jfs_txnmgr.c:1257 jfs_create+0x8bd/0xae0 fs/jfs/namei.c:157 lookup_open fs/namei.c:4508 [inline] open_last_lookups fs/namei.c:4608 [inline] path_openat+0x133a/0x3830 fs/namei.c:4856 do_file_open+0x23e/0x4a0 fs/namei.c:4888 do_sys_openat2+0x115/0x200 fs/open.c:1395 do_sys_open fs/open.c:1401 [inline] __do_sys_openat fs/open.c:1417 [inline] __se_sys_openat fs/open.c:1412 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1412 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f044cd9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f044db83fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f044d016090 RCX: 00007f044cd9ce59 RDX: 000000000000275a RSI: 0000200000000280 RDI: ffffffffffffff9c RBP: 00007f044ce32e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f044d016128 R14: 00007f044d016090 R15: 00007ffcf01a2e68 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txLock+0x1bdb/0x1d10 fs/jfs/jfs_txnmgr.c:663 Code: e9 c5 f7 ff ff e8 85 4e 5c fe 48 c7 c7 60 8b 0c 8c 48 c7 c6 59 87 0c 8c ba 97 02 00 00 48 c7 c1 80 8c 0c 8c e8 96 b7 bd fd 90 <0f> 0b e8 5e 4e 5c fe 48 c7 c7 40 8d 0c 8c e8 82 b7 bd fd 48 c7 c7 RSP: 0018:ffffc90003a0f440 EFLAGS: 00010246 RAX: 000000000000002b RBX: 0000000000000000 RCX: 6c549d33912d8f00 RDX: ffffc90020802000 RSI: 000000000000279f RDI: 00000000000027a0 RBP: ffffc90003a0f570 R08: ffffc90003a0f1c7 R09: 1ffff92000741e38 R10: dffffc0000000000 R11: fffff52000741e39 R12: 0000000000000000 R13: ffffc90001026000 R14: 0000000000000000 R15: 1ffff92000204c00 FS: 00007f044db846c0(0000) GS:ffff88808c848000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f04491f4fe8 CR3: 0000000043311000 CR4: 0000000000352ef0