BUG at fs/jfs/jfs_txnmgr.c:663 assert(last)
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kernel BUG at fs/jfs/jfs_txnmgr.c:663!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 14863 Comm: syz.6.1251 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:txLock+0x1b92/0x1cc0
Code: e9 6a f8 ff ff e8 0e ee 62 fe 48 c7 c7 a0 0b 0c 8c 48 c7 c6 99 07 0c 8c ba 97 02 00 00 48 c7 c1 c0 0c 0c 8c e8 ef f6 c4 fd 90 <0f> 0b e8 e7 ed 62 fe 48 c7 c7 80 0d 0c 8c e8 db f6 c4 fd 48 c7 c7
RSP: 0018:ffffc9000406dd80 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 7d25d6c35e671900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000406dea8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1cfd258 R12: 1ffff92000573400
R13: ffffc90002b9a000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f89025c56c0(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7fe5d771d0 CR3: 00000001bdb32000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 diWrite+0x444/0x1f40
 txCommit+0x869/0x5410
 jfs_commit_inode+0x2ef/0x530
 extAlloc+0xc95/0x1020
 jfs_get_block+0x358/0xad0
 __block_write_begin_int+0x6c6/0x1910
 block_write_begin+0x8d/0x120
 jfs_write_begin+0x35/0x80
 generic_perform_write+0x2e2/0x8f0
 generic_file_write_iter+0x14a/0x680
 __kernel_write_iter+0x41e/0x880
 dump_user_range+0xc19/0x12c0
 elf_core_dump+0x34c2/0x3ad0
 coredump_write+0x1216/0x1910
 vfs_coredump+0x3807/0x4530
 get_signal+0x1107/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 irqentry_exit+0x284/0x730
 exc_general_protection+0x16b/0x1f0
 asm_exc_general_protection+0x26/0x30
RIP: 0033:0x7f890179cde1
Code: 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 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:0000200000000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f8901a15fa0 RCX: 00007f890179cdd9
RDX: 00002000000001c0 RSI: 0000200000000140 RDI: 0000000000000080
RBP: 00007f8901832d69 R08: 0000200000000400 R09: 0000200000000400
R10: 0000200000000200 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f8901a16038 R14: 00007f8901a15fa0 R15: 00007ffe4a54aff8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1b92/0x1cc0
Code: e9 6a f8 ff ff e8 0e ee 62 fe 48 c7 c7 a0 0b 0c 8c 48 c7 c6 99 07 0c 8c ba 97 02 00 00 48 c7 c1 c0 0c 0c 8c e8 ef f6 c4 fd 90 <0f> 0b e8 e7 ed 62 fe 48 c7 c7 80 0d 0c 8c e8 db f6 c4 fd 48 c7 c7
RSP: 0018:ffffc9000406dd80 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 7d25d6c35e671900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000406dea8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1cfd258 R12: 1ffff92000573400
R13: ffffc90002b9a000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f89025c56c0(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a511f6440 CR3: 00000001bdb32000 CR4: 00000000000006f0
