syzbot

general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]
CPU: 0 PID: 5062 Comm: syz-executor294 Not tainted 6.2.0-rc4-syzkaller-00467-gf67144022885 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:evict_linked_inode fs/gfs2/super.c:1349 [inline]
RIP: 0010:gfs2_evict_inode+0xf0e/0x1c50 fs/gfs2/super.c:1399
Code: 03 80 3c 02 00 0f 85 28 0d 00 00 48 8b 9d 00 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 8c 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f8
RSP: 0018:ffffc90003eff8b8 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000011 RSI: ffffffff8394e5fd RDI: 000000000000008c
RBP: ffff888079524000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888076fe8d98 R14: ffff888076fe9228 R15: ffff888076fe8d70
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f02355d7140 CR3: 000000000c48e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 evict+0x2ed/0x6b0 fs/inode.c:664
 iput_final fs/inode.c:1747 [inline]
 iput.part.0+0x59b/0x880 fs/inode.c:1773
 iput+0x5c/0x80 fs/inode.c:1763
 gfs2_jindex_free+0x391/0x560 fs/gfs2/super.c:75
 gfs2_put_super+0x48f/0x670 fs/gfs2/super.c:625
 generic_shutdown_super+0x158/0x410 fs/super.c:492
 kill_block_super+0x9b/0xf0 fs/super.c:1386
 gfs2_kill_sb+0x108/0x170 fs/gfs2/ops_fstype.c:1738
 deactivate_locked_super+0x98/0x160 fs/super.c:332
 deactivate_super+0xb1/0xd0 fs/super.c:363
 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1291
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xaa8/0x2950 kernel/exit.c:867
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012
 __do_sys_exit_group kernel/exit.c:1023 [inline]
 __se_sys_exit_group kernel/exit.c:1021 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1021
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f023553d999
Code: Unable to access opcode bytes at 0x7f023553d96f.
RSP: 002b:00007fff98fbb388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f02355d9330 RCX: 00007f023553d999
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000000262db
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f02355d9330
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:evict_linked_inode fs/gfs2/super.c:1349 [inline]
RIP: 0010:gfs2_evict_inode+0xf0e/0x1c50 fs/gfs2/super.c:1399
Code: 03 80 3c 02 00 0f 85 28 0d 00 00 48 8b 9d 00 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 8c 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f8
RSP: 0018:ffffc90003eff8b8 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000011 RSI: ffffffff8394e5fd RDI: 000000000000008c
RBP: ffff888079524000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888076fe8d98 R14: ffff888076fe9228 R15: ffff888076fe8d70
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f02355d7140 CR3: 0000000029a8b000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   6:	85 28                	test   %ebp,(%rax)
   8:	0d 00 00 48 8b       	or     $0x8b480000,%eax
   d:	9d                   	popfq
   e:	00 09                	add    %cl,(%rcx)
  10:	00 00                	add    %al,(%rax)
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df
  1c:	48 8d bb 8c 00 00 00 	lea    0x8c(%rbx),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx <-- trapping instruction
  2e:	48 89 f8             	mov    %rdi,%rax
  31:	83 e0 07             	and    $0x7,%eax
  34:	83 c0 03             	add    $0x3,%eax
  37:	38 d0                	cmp    %dl,%al
  39:	7c 08                	jl     0x43
  3b:	84 d2                	test   %dl,%dl
  3d:	0f                   	.byte 0xf
  3e:	85 f8                	test   %edi,%eax