gfs2: fsid=syz:syz.0: H: s:SH f:H e:0 p:20383 [syz-executor.5] __gfs2_lookup+0xa4/0x270 fs/gfs2/inode.c:888 gfs2: fsid=syz:syz.0: H: s:UN f: e:0 p:-559964884 [] 0x0 general protection fault, probably for non-canonical address 0xdffffc000012343c: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x000000000091a1e0-0x000000000091a1e7] CPU: 0 PID: 20409 Comm: syz-executor.5 Not tainted 6.3.0-rc4-syzkaller-00051-g8bb95a1662f8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:pid_nr include/linux/pid.h:185 [inline] RIP: 0010:dump_holder fs/gfs2/glock.c:2270 [inline] RIP: 0010:gfs2_dump_glock+0xe85/0x1ad0 fs/gfs2/glock.c:2382 Code: e8 40 c4 2e fe 48 8b 1b 48 85 db 74 2e e8 83 0d d9 fd 4c 8d bb d0 00 00 00 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 30 08 00 00 45 8b 3f eb 08 e8 55 0d d9 fd RSP: 0018:ffffc90003a8f140 EFLAGS: 00010207 RAX: 000000000012343c RBX: 000000000091a114 RCX: dffffc0000000000 RDX: ffffc9000dd60000 RSI: 0000000000037420 RDI: 0000000000037421 RBP: ffffc90003a8f430 R08: ffffffff83b144ee R09: fffffbfff205c639 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff90334ec8 R13: 1ffffffff20669dd R14: ffffffff90334ee8 R15: 000000000091a1e4 FS: 00007f18473bf700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f18473bf718 CR3: 000000007634e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:465 gfs2_dirent_scan+0x512/0x640 fs/gfs2/dir.c:602 gfs2_dirent_search+0x30e/0x8c0 fs/gfs2/dir.c:850 gfs2_dir_search+0xb2/0x2f0 fs/gfs2/dir.c:1650 gfs2_lookupi+0x460/0x5d0 fs/gfs2/inode.c:332 __gfs2_lookup+0xa4/0x270 fs/gfs2/inode.c:888 gfs2_atomic_open+0x9e/0x230 fs/gfs2/inode.c:1292 atomic_open fs/namei.c:3279 [inline] lookup_open fs/namei.c:3387 [inline] open_last_lookups fs/namei.c:3484 [inline] path_openat+0x103c/0x3170 fs/namei.c:3712 do_filp_open+0x234/0x490 fs/namei.c:3742 do_sys_openat2+0x13f/0x500 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1375 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f184668c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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:00007f18473bf168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f18467ac050 RCX: 00007f184668c0f9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c RBP: 00007f18466e7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe56d6bcdf R14: 00007f18473bf300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pid_nr include/linux/pid.h:185 [inline] RIP: 0010:dump_holder fs/gfs2/glock.c:2270 [inline] RIP: 0010:gfs2_dump_glock+0xe85/0x1ad0 fs/gfs2/glock.c:2382 Code: e8 40 c4 2e fe 48 8b 1b 48 85 db 74 2e e8 83 0d d9 fd 4c 8d bb d0 00 00 00 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 30 08 00 00 45 8b 3f eb 08 e8 55 0d d9 fd RSP: 0018:ffffc90003a8f140 EFLAGS: 00010207 RAX: 000000000012343c RBX: 000000000091a114 RCX: dffffc0000000000 RDX: ffffc9000dd60000 RSI: 0000000000037420 RDI: 0000000000037421 RBP: ffffc90003a8f430 R08: ffffffff83b144ee R09: fffffbfff205c639 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff90334ec8 R13: 1ffffffff20669dd R14: ffffffff90334ee8 R15: 000000000091a1e4 FS: 00007f18473bf700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32d27000 CR3: 000000007634e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 40 c4 2e fe callq 0xfe2ec445 5: 48 8b 1b mov (%rbx),%rbx 8: 48 85 db test %rbx,%rbx b: 74 2e je 0x3b d: e8 83 0d d9 fd callq 0xfdd90d95 12: 4c 8d bb d0 00 00 00 lea 0xd0(%rbx),%r15 19: 4c 89 f8 mov %r15,%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 30 08 00 00 jne 0x866 36: 45 8b 3f mov (%r15),%r15d 39: eb 08 jmp 0x43 3b: e8 55 0d d9 fd callq 0xfdd90d95