divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 21107 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:dbNextAG+0xff/0x530 fs/jfs/jfs_dmap.c:615
Code: df 48 89 c1 48 89 04 24 83 e0 07 48 c1 e9 03 0f b6 0c 11 48 89 c2 83 c2 03 38 ca 7c 08 84 c9 0f 85 8a 03 00 00 44 89 f0 31 d2 <41> f7 74 24 14 49 89 c6 49 8d 44 24 20 48 89 c2 48 89 44 24 18 48
RSP: 0018:ffff88808c6b76f8 EFLAGS: 00010246
RAX: 000000001124c760 RBX: ffff88809b1e9580 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88804e0e0188
RBP: ffff88804e0e0180 R08: 0000000000000000 R09: ffffed1009c1c0ba
R10: ffff88804e0e05d7 R11: 0000000000000000 R12: ffff88804e0e0180
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
R13: 0000000000000001 R14: 000000001124c760 R15: ffff888042618300
FS:  00007f3bfba23700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c011922ff0 CR3: 000000009827f000 CR4: 00000000003406f0
device veth2 entered promiscuous mode
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 dbAlloc+0x44b/0xb00 fs/jfs/jfs_dmap.c:857
 extBalloc fs/jfs/jfs_extent.c:531 [inline]
 extAlloc+0x4cb/0xdb0 fs/jfs/jfs_extent.c:138
 jfs_get_block+0x1f5/0xae0 fs/jfs/inode.c:258
 nobh_write_begin+0x446/0x1030 fs/buffer.c:2619
 jfs_write_begin+0x3e/0x1a0 fs/jfs/inode.c:323
 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170
 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295
 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323
 call_write_iter include/linux/fs.h:1821 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x51b/0x770 fs/read_write.c:487
 vfs_write+0x1f3/0x540 fs/read_write.c:549
 ksys_write+0x12b/0x2a0 fs/read_write.c:599
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3bfd0b05a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3bfba23168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3bfd1d0f80 RCX: 00007f3bfd0b05a9
RDX: 000000000208e24b RSI: 0000000020000480 RDI: 0000000000000003
RBP: 00007f3bfd10b580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffef11fd2cf R14: 00007f3bfba23300 R15: 0000000000022000
Modules linked in:
---[ end trace 45f005d80a273594 ]---
RIP: 0010:dbNextAG+0xff/0x530 fs/jfs/jfs_dmap.c:615
Code: df 48 89 c1 48 89 04 24 83 e0 07 48 c1 e9 03 0f b6 0c 11 48 89 c2 83 c2 03 38 ca 7c 08 84 c9 0f 85 8a 03 00 00 44 89 f0 31 d2 <41> f7 74 24 14 49 89 c6 49 8d 44 24 20 48 89 c2 48 89 44 24 18 48
RSP: 0018:ffff88808c6b76f8 EFLAGS: 00010246
RAX: 000000001124c760 RBX: ffff88809b1e9580 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88804e0e0188
RBP: ffff88804e0e0180 R08: 0000000000000000 R09: ffffed1009c1c0ba
R10: ffff88804e0e05d7 R11: 0000000000000000 R12: ffff88804e0e0180
R13: 0000000000000001 R14: 000000001124c760 R15: ffff888042618300
device veth2 entered promiscuous mode
FS:  00007f3bfba23700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7aa82db000 CR3: 000000009827f000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	c1 48 89 04          	rorl   $0x4,-0x77(%rax)
   7:	24 83                	and    $0x83,%al
   9:	e0 07                	loopne 0x12
   b:	48 c1 e9 03          	shr    $0x3,%rcx
   f:	0f b6 0c 11          	movzbl (%rcx,%rdx,1),%ecx
  13:	48 89 c2             	mov    %rax,%rdx
  16:	83 c2 03             	add    $0x3,%edx
  19:	38 ca                	cmp    %cl,%dl
  1b:	7c 08                	jl     0x25
  1d:	84 c9                	test   %cl,%cl
  1f:	0f 85 8a 03 00 00    	jne    0x3af
  25:	44 89 f0             	mov    %r14d,%eax
  28:	31 d2                	xor    %edx,%edx
* 2a:	41 f7 74 24 14       	divl   0x14(%r12) <-- trapping instruction
  2f:	49 89 c6             	mov    %rax,%r14
  32:	49 8d 44 24 20       	lea    0x20(%r12),%rax
  37:	48 89 c2             	mov    %rax,%rdx
  3a:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
  3f:	48                   	rex.W