gfs2: pid: 8166 gfs2: lock type: 8 req lock state : 1 gfs2: G: s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:6 m:20 gfs2: H: s:EX f:cH e:0 p:8166 [syz-executor.3] gfs2_glock_nq_init fs/gfs2/glock.h:226 [inline] gfs2: H: s:EX f:cH e:0 p:8166 [syz-executor.3] do_sync+0x442/0xc90 fs/gfs2/quota.c:896 ------------[ cut here ]------------ kernel BUG at fs/gfs2/glock.c:1082! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8166 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:add_to_queue fs/gfs2/glock.c:1082 [inline] RIP: 0010:gfs2_glock_nq.cold+0x276/0x2cd fs/gfs2/glock.c:1107 Code: 0f b6 04 02 84 c0 74 04 3c 03 7e 6e 8b 73 18 44 89 ea 48 c7 c7 60 4f a6 88 e8 02 57 f8 ff 48 8b 74 24 08 31 ff e8 0b cc 0a fb <0f> 0b e8 74 02 9d f9 4c 8b 04 24 e9 aa fd ff ff 31 ed e9 12 fe ff RSP: 0018:ffff88809c96fa20 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880974f1298 RCX: ffffffff83063ba3 RDX: 0000000000000000 RSI: ffffffff83063bf2 RDI: ffffffff88a67230 RBP: 0000000000001fe6 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888094e39838 audit: type=1800 audit(1672634776.839:7): pid=10389 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=13928 res=0 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880a36e1780 FS: 00005555562f1400(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe3891fff8 CR3: 00000000a3186000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 audit: type=1800 audit(1672634776.839:8): pid=10389 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=13928 res=0 Call Trace: gfs2_glock_nq_init fs/gfs2/glock.h:228 [inline] do_sync+0x44a/0xc90 fs/gfs2/quota.c:896 gfs2_quota_sync+0x5d1/0x780 fs/gfs2/quota.c:1303 gfs2_sync_fs+0x40/0xb0 fs/gfs2/super.c:957 __sync_filesystem fs/sync.c:39 [inline] sync_filesystem+0x105/0x250 fs/sync.c:64 generic_shutdown_super+0x70/0x370 fs/super.c:442 kill_block_super+0x97/0xf0 fs/super.c:1185 gfs2_kill_sb+0x12c/0x1a0 fs/gfs2/ops_fstype.c:1390 deactivate_locked_super+0x94/0x160 fs/super.c:329 deactivate_super+0x174/0x1a0 fs/super.c:360 cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f469f198517 ERROR: (device loop4): xtSearch: XT_GETPAGE: xtree page corrupt Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 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:00007ffe389201c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f469f198517 RDX: 00007ffe38920299 RSI: 000000000000000a RDI: 00007ffe38920290 RBP: 00007ffe38920290 R08: 00000000ffffffff R09: 00007ffe38920060 overlayfs: 'file0' not a directory R10: 00005555562f2903 R11: 0000000000000246 R12: 00007f469f1f1b24 R13: 00007ffe38921350 R14: 00005555562f2810 R15: 00007ffe38921390 Modules linked in: ---[ end trace 396f7610a8655dda ]--- overlayfs: './file0' not a directory RIP: 0010:add_to_queue fs/gfs2/glock.c:1082 [inline] RIP: 0010:gfs2_glock_nq.cold+0x276/0x2cd fs/gfs2/glock.c:1107 audit: type=1804 audit(1672634777.199:9): pid=10423 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir699428115/syzkaller.pOyFgC/9/bus" dev="sda1" ino=14004 res=1 Code: 0f b6 04 02 84 c0 74 04 3c 03 7e 6e 8b 73 18 44 89 ea 48 c7 c7 60 4f a6 88 e8 02 57 f8 ff 48 8b 74 24 08 31 ff e8 0b cc 0a fb <0f> 0b e8 74 02 9d f9 4c 8b 04 24 e9 aa fd ff ff 31 ed e9 12 fe ff RSP: 0018:ffff88809c96fa20 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880974f1298 RCX: ffffffff83063ba3 RDX: 0000000000000000 RSI: ffffffff83063bf2 RDI: ffffffff88a67230 RBP: 0000000000001fe6 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888094e39838 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880a36e1780 FS: 00005555562f1400(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe3891fff8 CR3: 00000000a3186000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: ff f7 push %rdi 2: d8 64 89 01 fsubs 0x1(%rcx,%rcx,4) 6: 48 83 c8 ff or $0xffffffffffffffff,%rax a: c3 retq b: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 11: 31 f6 xor %esi,%esi 13: e9 09 00 00 00 jmpq 0x21 18: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 1f: 00 00 21: b8 a6 00 00 00 mov $0xa6,%eax 26: 0f 05 syscall * 28: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2e: 73 01 jae 0x31 30: c3 retq 31: 48 c7 c1 b8 ff ff ff mov $0xffffffffffffffb8,%rcx 38: f7 d8 neg %eax 3a: 64 89 01 mov %eax,%fs:(%rcx) 3d: 48 rex.W