general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 0 PID: 4677 Comm: syz.4.288 Not tainted 6.1.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1468 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2337 [inline]
RIP: 0010:gfs2_dump_glock+0xe1b/0x1ba0 fs/gfs2/glock.c:2451
Code: c6 05 49 7f cf 0a 01 48 c7 c7 c0 a9 50 8b be 19 03 00 00 48 c7 c2 00 aa 50 8b e8 70 e7 b4 fd 4d 8d 65 20 4d 89 e6 49 c1 ee 03 <41> 0f b6 04 1e 84 c0 0f 85 64 07 00 00 41 0f b7 1c 24 89 de 81 e6
RSP: 0018:ffffc90004e471a0 EFLAGS: 00010207
RAX: ffffffff83b5e7e0 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc9000acfc000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90004e47490 R08: ffffffff83b5e7c9 R09: fffffbfff20e7645
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000066
R13: 0000000000000046 R14: 000000000000000c R15: dffffc0000000000
FS:  00007fc4637de6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c33b5ee CR3: 0000000065873000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_consist_inode_i+0xf1/0x110 fs/gfs2/util.c:464
 gfs2_dirent_scan+0x512/0x640 fs/gfs2/dir.c:602
 gfs2_dirent_search+0x30a/0x8c0 fs/gfs2/dir.c:850
 gfs2_dir_search+0xae/0x2f0 fs/gfs2/dir.c:1650
 gfs2_lookupi+0x45f/0x5e0 fs/gfs2/inode.c:323
 __gfs2_lookup+0xa0/0x270 fs/gfs2/inode.c:870
 __lookup_slow+0x27e/0x3d0 fs/namei.c:1690
 lookup_slow+0x53/0x70 fs/namei.c:1707
 walk_component+0x2d0/0x400 fs/namei.c:1998
 lookup_last fs/namei.c:2455 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2479
 filename_lookup+0x251/0x600 fs/namei.c:2508
 kern_path+0x31/0x50 fs/namei.c:2606
 lookup_bdev+0xc1/0x280 block/bdev.c:983
 btrfs_control_ioctl+0x1e1/0x420 fs/btrfs/super.c:2511
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc463979e79
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc4637de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc463b16058 RCX: 00007fc463979e79
RDX: 00000000200004c0 RSI: 0000000050009405 RDI: 0000000000000004
RBP: 00007fc4639e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc463b16058 R15: 00007fff41ce3a38
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1468 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2337 [inline]
RIP: 0010:gfs2_dump_glock+0xe1b/0x1ba0 fs/gfs2/glock.c:2451
Code: c6 05 49 7f cf 0a 01 48 c7 c7 c0 a9 50 8b be 19 03 00 00 48 c7 c2 00 aa 50 8b e8 70 e7 b4 fd 4d 8d 65 20 4d 89 e6 49 c1 ee 03 <41> 0f b6 04 1e 84 c0 0f 85 64 07 00 00 41 0f b7 1c 24 89 de 81 e6
RSP: 0018:ffffc90004e471a0 EFLAGS: 00010207
RAX: ffffffff83b5e7e0 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc9000acfc000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90004e47490 R08: ffffffff83b5e7c9 R09: fffffbfff20e7645
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000066
R13: 0000000000000046 R14: 000000000000000c R15: dffffc0000000000
FS:  00007fc4637de6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f01bff8 CR3: 0000000065873000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c6 05 49 7f cf 0a 01 	movb   $0x1,0xacf7f49(%rip)        # 0xacf7f50
   7:	48 c7 c7 c0 a9 50 8b 	mov    $0xffffffff8b50a9c0,%rdi
   e:	be 19 03 00 00       	mov    $0x319,%esi
  13:	48 c7 c2 00 aa 50 8b 	mov    $0xffffffff8b50aa00,%rdx
  1a:	e8 70 e7 b4 fd       	call   0xfdb4e78f
  1f:	4d 8d 65 20          	lea    0x20(%r13),%r12
  23:	4d 89 e6             	mov    %r12,%r14
  26:	49 c1 ee 03          	shr    $0x3,%r14
* 2a:	41 0f b6 04 1e       	movzbl (%r14,%rbx,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 64 07 00 00    	jne    0x79b
  37:	41 0f b7 1c 24       	movzwl (%r12),%ebx
  3c:	89 de                	mov    %ebx,%esi
  3e:	81                   	.byte 0x81
  3f:	e6                   	.byte 0xe6