gfs2: fsid=syz:syz.0: H: s:SH f:H e:0 p:17832 [syz-executor.2] __gfs2_lookup+0xa4/0x270 fs/gfs2/inode.c:888 general protection fault, probably for non-canonical address 0xdffffc0008bc06c5: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000045e03628-0x0000000045e0362f] CPU: 0 PID: 17834 Comm: syz-executor.2 Not tainted 6.3.0-syzkaller-11733-g825a0714d2b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1457 [inline] RIP: 0010:dump_holder fs/gfs2/glock.c:2266 [inline] RIP: 0010:gfs2_dump_glock+0xdcd/0x1ad0 fs/gfs2/glock.c:2382 Code: 05 88 d6 8c 0a 01 48 c7 c7 c0 a4 2c 8b be 07 03 00 00 48 c7 c2 00 a5 2c 8b e8 8f 14 b7 fd 4d 8d 74 24 20 4d 89 f5 49 c1 ed 03 <43> 0f b6 44 3d 00 84 c0 0f 85 f1 06 00 00 41 0f b7 1e 89 de 81 e6 RSP: 0018:ffffc9000334f140 EFLAGS: 00010207 RAX: ffffffff83b48e19 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc9000c40e000 RSI: 000000000001aeed RDI: 000000000001aeee RBP: ffffc9000334f430 R08: ffffffff83b48e07 R09: fffffbfff206524d R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000045e0360e R13: 0000000008bc06c5 R14: 0000000045e0362e R15: dffffc0000000000 FS: 00007f4fb3121700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f56e09831b8 CR3: 000000007ba57000 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:1289 atomic_open fs/namei.c:3355 [inline] lookup_open fs/namei.c:3463 [inline] open_last_lookups fs/namei.c:3560 [inline] path_openat+0x103c/0x3170 fs/namei.c:3788 do_filp_open+0x234/0x490 fs/namei.c:3818 do_sys_openat2+0x13f/0x500 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_open fs/open.c:1380 [inline] __se_sys_open fs/open.c:1376 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1376 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: 0033:0x7f4fb248c169 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:00007f4fb3121168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f4fb25ac120 RCX: 00007f4fb248c169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200025c0 RBP: 00007f4fb24e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5f6248ff R14: 00007f4fb3121300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1457 [inline] RIP: 0010:dump_holder fs/gfs2/glock.c:2266 [inline] RIP: 0010:gfs2_dump_glock+0xdcd/0x1ad0 fs/gfs2/glock.c:2382 Code: 05 88 d6 8c 0a 01 48 c7 c7 c0 a4 2c 8b be 07 03 00 00 48 c7 c2 00 a5 2c 8b e8 8f 14 b7 fd 4d 8d 74 24 20 4d 89 f5 49 c1 ed 03 <43> 0f b6 44 3d 00 84 c0 0f 85 f1 06 00 00 41 0f b7 1e 89 de 81 e6 RSP: 0018:ffffc9000334f140 EFLAGS: 00010207 RAX: ffffffff83b48e19 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc9000c40e000 RSI: 000000000001aeed RDI: 000000000001aeee RBP: ffffc9000334f430 R08: ffffffff83b48e07 R09: fffffbfff206524d R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000045e0360e R13: 0000000008bc06c5 R14: 0000000045e0362e R15: dffffc0000000000 FS: 00007f4fb3121700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f56d707ec00 CR3: 000000007ba57000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 0a 01 or (%rcx),%al 2: 48 c7 c7 c0 a4 2c 8b mov $0xffffffff8b2ca4c0,%rdi 9: be 07 03 00 00 mov $0x307,%esi e: 48 c7 c2 00 a5 2c 8b mov $0xffffffff8b2ca500,%rdx 15: e8 8f 14 b7 fd callq 0xfdb714a9 1a: 4d 8d 74 24 20 lea 0x20(%r12),%r14 1f: 4d 89 f5 mov %r14,%r13 22: 49 c1 ed 03 shr $0x3,%r13 * 26: 43 0f b6 44 3d 00 movzbl 0x0(%r13,%r15,1),%eax <-- trapping instruction 2c: 84 c0 test %al,%al 2e: 0f 85 f1 06 00 00 jne 0x725 34: 41 0f b7 1e movzwl (%r14),%ebx 38: 89 de mov %ebx,%esi 3a: 81 .byte 0x81 3b: e6 .byte 0xe6