gfs2: fsid=syz:syz.0: H: s:SH f:H e:0 p:6091 [syz.0.50] __gfs2_lookup+0x90/0x270 fs/gfs2/inode.c:896
general protection fault, probably for non-canonical address 0xdffffc0008bc06c5: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x0000000045e03628-0x0000000045e0362f]
CPU: 1 PID: 6093 Comm: syz.0.50 Not tainted 6.6.100-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1502 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2308 [inline]
RIP: 0010:gfs2_dump_glock+0xd5f/0x1920 fs/gfs2/glock.c:2424
Code: e0 8d ef 8a be 14 03 00 00 48 c7 c2 20 8e ef 8a e8 f6 ae c8 fd 49 8d 5d 20 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 0f 85 10 06 00 00 48 89 5c 24 38 0f b7 1b 89
RSP: 0018:ffffc90003696ee0 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 0000000045e0362e RCX: ffff88807ce7da00
RDX: 0000000000000000 RSI: ffffffff8afc66e0 RDI: ffffffff8afc66a0
RBP: ffffc900036971d0 R08: dffffc0000000000 R09: 1ffffffff21b46a4
R10: dffffc0000000000 R11: fffffbfff21b46a5 R12: ffffffff839f0b9f
R13: 0000000045e0360e R14: 0000000008bc06c5 R15: 0000000000000000
FS: 00007fa8413de6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5586b91000 CR3: 0000000060c10000 CR4: 00000000003506e0
Call Trace:
<TASK>
gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:455
gfs2_dirent_scan+0x525/0x650 fs/gfs2/dir.c:602
gfs2_dirent_search+0x2e1/0x7e0 fs/gfs2/dir.c:850
gfs2_dir_search+0x4d/0x220 fs/gfs2/dir.c:1650
gfs2_lookupi+0x3d9/0x5a0 fs/gfs2/inode.c:339
__gfs2_lookup+0x90/0x270 fs/gfs2/inode.c:896
__lookup_slow+0x281/0x3b0 fs/namei.c:1694
lookup_slow+0x53/0x70 fs/namei.c:1711
walk_component fs/namei.c:2002 [inline]
link_path_walk+0x970/0xe00 fs/namei.c:2329
path_lookupat+0x9d/0x440 fs/namei.c:2482
do_o_path+0x98/0x1f0 fs/namei.c:3760
path_openat+0x2a31/0x3190 fs/namei.c:3782
do_filp_open+0x1c5/0x3d0 fs/namei.c:3816
do_sys_openat2+0x12c/0x1c0 fs/open.c:1419
do_sys_open fs/open.c:1434 [inline]
__do_sys_openat fs/open.c:1450 [inline]
__se_sys_openat fs/open.c:1445 [inline]
__x64_sys_openat+0x139/0x160 fs/open.c:1445
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa84158e9a9
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:00007fa8413de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa8417b6080 RCX: 00007fa84158e9a9
RDX: 0000000000200002 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007fa841610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa8417b6080 R15: 00007ffeda133c88
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1502 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2308 [inline]
RIP: 0010:gfs2_dump_glock+0xd5f/0x1920 fs/gfs2/glock.c:2424
Code: e0 8d ef 8a be 14 03 00 00 48 c7 c2 20 8e ef 8a e8 f6 ae c8 fd 49 8d 5d 20 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 0f 85 10 06 00 00 48 89 5c 24 38 0f b7 1b 89
RSP: 0018:ffffc90003696ee0 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 0000000045e0362e RCX: ffff88807ce7da00
RDX: 0000000000000000 RSI: ffffffff8afc66e0 RDI: ffffffff8afc66a0
RBP: ffffc900036971d0 R08: dffffc0000000000 R09: 1ffffffff21b46a4
R10: dffffc0000000000 R11: fffffbfff21b46a5 R12: ffffffff839f0b9f
R13: 0000000045e0360e R14: 0000000008bc06c5 R15: 0000000000000000
FS: 00007fa8413de6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa8413ddf98 CR3: 0000000060c10000 CR4: 00000000003506f0
----------------
Code disassembly (best guess):
0: e0 8d loopne 0xffffff8f
2: ef out %eax,(%dx)
3: 8a be 14 03 00 00 mov 0x314(%rsi),%bh
9: 48 c7 c2 20 8e ef 8a mov $0xffffffff8aef8e20,%rdx
10: e8 f6 ae c8 fd call 0xfdc8af0b
15: 49 8d 5d 20 lea 0x20(%r13),%rbx
19: 49 89 de mov %rbx,%r14
1c: 49 c1 ee 03 shr $0x3,%r14
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 41 0f b6 04 06 movzbl (%r14,%rax,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 10 06 00 00 jne 0x647
37: 48 89 5c 24 38 mov %rbx,0x38(%rsp)
3c: 0f b7 1b movzwl (%rbx),%ebx
3f: 89 .byte 0x89