loop0: detected capacity change from 0 to 32768
BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5323)
BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): using crc32c checksum algorithm
BTRFS info (device loop0): setting nodatasum
BTRFS info (device loop0): setting nodatacow
BTRFS info (device loop0): turning on async discard
BTRFS info (device loop0): enabling free space tree
BTRFS info (device loop0): enabling auto defrag
BTRFS info (device loop0): max_inline set to 0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
fail_dump lib/fault-inject.c:73 [inline]
should_fail_ex+0x412/0x560 lib/fault-inject.c:174
should_failslab+0xa8/0x100 mm/failslab.c:46
slab_pre_alloc_hook mm/slub.c:4495 [inline]
slab_alloc_node mm/slub.c:4846 [inline]
kmem_cache_alloc_noprof+0x87/0x650 mm/slub.c:4876
__kernfs_new_node+0xe9/0x8e0 fs/kernfs/dir.c:637
kernfs_new_node+0x102/0x210 fs/kernfs/dir.c:718
kernfs_create_dir_ns+0x44/0x130 fs/kernfs/dir.c:1088
sysfs_create_dir_ns+0x12f/0x2a0 fs/sysfs/dir.c:59
create_dir lib/kobject.c:73 [inline]
kobject_add_internal+0x62b/0xd00 lib/kobject.c:240
kobject_add_varg lib/kobject.c:374 [inline]
kobject_init_and_add+0x12b/0x1a0 lib/kobject.c:457
btrfs_sysfs_add_qgroups+0x116/0x2e0 fs/btrfs/sysfs.c:2604
btrfs_quota_enable+0x282/0x2850 fs/btrfs/qgroup.c:1034
btrfs_ioctl_quota_ctl+0x183/0x1c0 fs/btrfs/ioctl.c:3533
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2beb79c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2bec600fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2beba15fa0 RCX: 00007f2beb79c799
RDX: 0000200000000040 RSI: 00000000c0109428 RDI: 0000000000000008
RBP: 00007f2bec601050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f2beba16038 R14: 00007f2beba15fa0 R15: 00007ffc5a154b98
kobject: kobject_add_internal failed for qgroups (error: -12 parent: c9fe44da-de57-406a-8241-57ec7d4412cf)
------------[ cut here ]------------
kernfs: can not remove 'enabled', no directory
WARNING: fs/kernfs/dir.c:1712 at kernfs_remove_by_name_ns+0xc7/0x130 fs/kernfs/dir.c:1711, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:kernfs_remove_by_name_ns+0xca/0x130 fs/kernfs/dir.c:1711
Code: 3b c0 ff 3e 41 ff 06 4c 89 f7 e8 c1 f1 ff ff 4c 89 f7 e8 29 94 ff ff 31 ed eb 25 e8 50 67 54 ff 48 8d 3d 89 d9 a6 0d 4c 89 f6 <67> 48 0f b9 3a bd fe ff ff ff eb 12 e8 35 67 54 ff bd fe ff ff ff
RSP: 0018:ffffc9000e11fb10 EFLAGS: 00010293
RAX: ffffffff827141c0 RBX: ffffffff8c164300 RCX: ffff88803650a4c0
RDX: 0000000000000000 RSI: ffffffff8c164360 RDI: ffffffff90181b50
RBP: dffffc0000000000 R08: ffffc9000e11f867 R09: 1ffff92001c23f0c
R10: dffffc0000000000 R11: fffff52001c23f0d R12: 0000000000000000
R13: ffffffff8ed71920 R14: ffffffff8c164360 R15: 0000000000000000
FS: 00007f2bec6016c0(0000) GS:ffff88808ca56000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556dd6839480 CR3: 00000000125bf000 CR4: 0000000000352ef0
Call Trace:
kernfs_remove_by_name include/linux/kernfs.h:633 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0xfc/0x2e0 fs/sysfs/group.c:328
sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:352
__kobject_del+0x84/0x330 lib/kobject.c:595
kobject_del+0x45/0x60 lib/kobject.c:627
btrfs_sysfs_del_qgroups+0x115/0x160 fs/btrfs/sysfs.c:2579
btrfs_sysfs_add_qgroups+0x28b/0x2e0 fs/btrfs/sysfs.c:2618
btrfs_quota_enable+0x282/0x2850 fs/btrfs/qgroup.c:1034
btrfs_ioctl_quota_ctl+0x183/0x1c0 fs/btrfs/ioctl.c:3533
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2beb79c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2bec600fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2beba15fa0 RCX: 00007f2beb79c799
RDX: 0000200000000040 RSI: 00000000c0109428 RDI: 0000000000000008
RBP: 00007f2bec601050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f2beba16038 R14: 00007f2beba15fa0 R15: 00007ffc5a154b98
----------------
Code disassembly (best guess), 1 bytes skipped:
0: c0 ff 3e sar $0x3e,%bh
3: 41 ff 06 incl (%r14)
6: 4c 89 f7 mov %r14,%rdi
9: e8 c1 f1 ff ff call 0xfffff1cf
e: 4c 89 f7 mov %r14,%rdi
11: e8 29 94 ff ff call 0xffff943f
16: 31 ed xor %ebp,%ebp
18: eb 25 jmp 0x3f
1a: e8 50 67 54 ff call 0xff54676f
1f: 48 8d 3d 89 d9 a6 0d lea 0xda6d989(%rip),%rdi # 0xda6d9af
26: 4c 89 f6 mov %r14,%rsi
* 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2e: bd fe ff ff ff mov $0xfffffffe,%ebp
33: eb 12 jmp 0x47
35: e8 35 67 54 ff call 0xff54676f
3a: bd fe ff ff ff mov $0xfffffffe,%ebp