IPVS: ftp: loaded support on port[0] = 21
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1985 Comm: jfsCommit Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:__list_add_valid+0x22/0xa0 lib/list_debug.c:23
Code: ff 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df 41 54 49 89 d4 55 48 89 fd 48 8d 7a 08 48 83 ec 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 50 49 8b 54 24 08 48 39 f2 0f 85 aa 52 85 04 48 b8
RSP: 0018:ffff8880b0b27cb8 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffffc90001401100 RCX: ffffffff82752b89
RDX: 0000000000000001 RSI: ffffc90001401110 RDI: 0000000000000008
RBP: ffff8880a98fc5b0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90001401110 R14: ffff8880a98fc5b0 R15: ffff888098ae4690
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f24540111d0 CR3: 0000000009e6d000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:60 [inline]
 list_add include/linux/list.h:79 [inline]
 diUpdatePMap+0x835/0x1090 fs/jfs/jfs_imap.c:2836
 txUpdateMap+0xbfd/0x1000 fs/jfs/jfs_txnmgr.c:2401
 txLazyCommit fs/jfs/jfs_txnmgr.c:2709 [inline]
 jfs_lazycommit+0x525/0x9d0 fs/jfs/jfs_txnmgr.c:2777
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace 2e577b73f6085e11 ]---
RIP: 0010:__list_add_valid+0x22/0xa0 lib/list_debug.c:23
Code: ff 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df 41 54 49 89 d4 55 48 89 fd 48 8d 7a 08 48 83 ec 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 50 49 8b 54 24 08 48 39 f2 0f 85 aa 52 85 04 48 b8
RSP: 0018:ffff8880b0b27cb8 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffffc90001401100 RCX: ffffffff82752b89
RDX: 0000000000000001 RSI: ffffc90001401110 RDI: 0000000000000008
RBP: ffff8880a98fc5b0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90001401110 R14: ffff8880a98fc5b0 R15: ffff888098ae4690
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f24540111d0 CR3: 0000000009e6d000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	ff 90 90 90 90 90    	callq  *-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df
  12:	41 54                	push   %r12
  14:	49 89 d4             	mov    %rdx,%r12
  17:	55                   	push   %rbp
  18:	48 89 fd             	mov    %rdi,%rbp
  1b:	48 8d 7a 08          	lea    0x8(%rdx),%rdi
  1f:	48 83 ec 08          	sub    $0x8,%rsp
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	75 50                	jne    0x80
  30:	49 8b 54 24 08       	mov    0x8(%r12),%rdx
  35:	48 39 f2             	cmp    %rsi,%rdx
  38:	0f 85 aa 52 85 04    	jne    0x48552e8
  3e:	48                   	rex.W
  3f:	b8                   	.byte 0xb8