Oops: general protection fault, probably for non-canonical address 0xdffffc748000119f: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: probably user-memory-access in range [0x000003a400008cf8-0x000003a400008cff] CPU: 1 UID: 0 PID: 8021 Comm: syz.3.243 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:pid_nr include/linux/pid.h:178 [inline] RIP: 0010:dump_holder fs/gfs2/glock.c:2295 [inline] RIP: 0010:gfs2_dump_glock+0xfba/0x1bb0 fs/gfs2/glock.c:2407 Code: e8 eb 77 1b fe 48 8b 1b 48 85 db 74 2f e8 5e fc b4 fd 4c 8d a3 f8 00 00 00 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 dc 07 00 00 45 8b 24 24 eb 08 e8 2f fc b4 RSP: 0018:ffffc90004b5ef60 EFLAGS: 00010206 RAX: 000000748000119f RBX: 000003a400008c00 RCX: dffffc0000000000 RDX: ffffc9000d589000 RSI: 0000000000012376 RDI: 0000000000012377 RBP: ffffc90004b5f250 R08: ffffffff840a2778 R09: 1ffffffff285af08 R10: dffffc0000000000 R11: fffffbfff285af09 R12: 000003a400008cf8 R13: ffff888030c83d40 R14: ffff888030c83d60 R15: 1ffff110061907ac FS: 00007f88f28036c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c246965 CR3: 00000000319c4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:457 gfs2_dirent_scan+0x52b/0x670 gfs2_dirent_search+0x30e/0x8c0 fs/gfs2/dir.c:853 gfs2_dir_search+0xb2/0x2f0 fs/gfs2/dir.c:1653 gfs2_lookupi+0x461/0x5e0 fs/gfs2/inode.c:340 __gfs2_lookup+0xa4/0x280 fs/gfs2/inode.c:897 __lookup_slow+0x28c/0x3f0 fs/namei.c:1791 lookup_slow+0x53/0x70 fs/namei.c:1808 walk_component fs/namei.c:2112 [inline] link_path_walk+0x99b/0xea0 fs/namei.c:2477 path_openat+0x266/0x3580 fs/namei.c:3983 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1427 do_sys_open fs/open.c:1442 [inline] __do_sys_openat fs/open.c:1458 [inline] __se_sys_openat fs/open.c:1453 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1453 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f88f1985d29 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:00007f88f2803038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f88f1b76080 RCX: 00007f88f1985d29 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00007f88f1a01b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f88f1b76080 R15: 00007ffe3282f8e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pid_nr include/linux/pid.h:178 [inline] RIP: 0010:dump_holder fs/gfs2/glock.c:2295 [inline] RIP: 0010:gfs2_dump_glock+0xfba/0x1bb0 fs/gfs2/glock.c:2407 Code: e8 eb 77 1b fe 48 8b 1b 48 85 db 74 2f e8 5e fc b4 fd 4c 8d a3 f8 00 00 00 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 dc 07 00 00 45 8b 24 24 eb 08 e8 2f fc b4 RSP: 0018:ffffc90004b5ef60 EFLAGS: 00010206 RAX: 000000748000119f RBX: 000003a400008c00 RCX: dffffc0000000000 RDX: ffffc9000d589000 RSI: 0000000000012376 RDI: 0000000000012377 RBP: ffffc90004b5f250 R08: ffffffff840a2778 R09: 1ffffffff285af08 R10: dffffc0000000000 R11: fffffbfff285af09 R12: 000003a400008cf8 R13: ffff888030c83d40 R14: ffff888030c83d60 R15: 1ffff110061907ac FS: 00007f88f28036c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f298b85950 CR3: 00000000319c4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 eb 77 1b fe call 0xfe1b77f0 5: 48 8b 1b mov (%rbx),%rbx 8: 48 85 db test %rbx,%rbx b: 74 2f je 0x3c d: e8 5e fc b4 fd call 0xfdb4fc70 12: 4c 8d a3 f8 00 00 00 lea 0xf8(%rbx),%r12 19: 4c 89 e0 mov %r12,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 dc 07 00 00 jne 0x812 36: 45 8b 24 24 mov (%r12),%r12d 3a: eb 08 jmp 0x44 3c: e8 .byte 0xe8 3d: 2f (bad) 3e: fc cld 3f: b4 .byte 0xb4