======================================================
audit: type=1804 audit(1654981948.257:1161): pid=31203 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir1061800344/syzkaller.YGFpFw/733/bus" dev="sda1" ino=15503 res=1
WARNING: possible circular locking dependency detected
4.19.211-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.0/31267 is trying to acquire lock:
0000000073fb0084 (&sig->cred_guard_mutex){+.+.}, at: lock_trace fs/proc/base.c:402 [inline]
0000000073fb0084 (&sig->cred_guard_mutex){+.+.}, at: proc_pid_stack+0x160/0x350 fs/proc/base.c:452

but task is already holding lock:
00000000ddf23219 (&p->lock){+.+.}, at: seq_read+0x6b/0x11c0 fs/seq_file.c:164

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'.

-> #3 (&p->lock){+.+.}:
       seq_read+0x6b/0x11c0 fs/seq_file.c:164
       proc_reg_read+0x1bd/0x2d0 fs/proc/inode.c:231
       do_loop_readv_writev fs/read_write.c:701 [inline]
       do_loop_readv_writev fs/read_write.c:688 [inline]
       do_iter_read+0x471/0x630 fs/read_write.c:925
       vfs_readv+0xe5/0x150 fs/read_write.c:987
       kernel_readv fs/splice.c:362 [inline]
       default_file_splice_read+0x457/0xa00 fs/splice.c:417
       do_splice_to+0x10e/0x160 fs/splice.c:881
       splice_direct_to_actor+0x2b9/0x8d0 fs/splice.c:959
       do_splice_direct+0x1a7/0x270 fs/splice.c:1068
       do_sendfile+0x550/0xc30 fs/read_write.c:1447
       __do_sys_sendfile64 fs/read_write.c:1508 [inline]
       __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #2 (sb_writers#3){.+.+}:
       sb_start_write include/linux/fs.h:1579 [inline]
       mnt_want_write+0x3a/0xb0 fs/namespace.c:360
       ovl_link+0x73/0x2b0 fs/overlayfs/dir.c:676
       vfs_link+0x7e6/0xc80 fs/namei.c:4243
       do_linkat+0x52a/0x810 fs/namei.c:4311
       __do_sys_link fs/namei.c:4340 [inline]
       __se_sys_link fs/namei.c:4338 [inline]
       __x64_sys_link+0x5d/0x80 fs/namei.c:4338
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #1 (&ovl_i_mutex_key[depth]){+.+.}:
       inode_lock include/linux/fs.h:748 [inline]
       process_measurement+0x926/0x1440 security/integrity/ima/ima_main.c:205
       ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391
       do_last fs/namei.c:3425 [inline]
       path_openat+0x7e4/0x2df0 fs/namei.c:3537
       do_filp_open+0x18c/0x3f0 fs/namei.c:3567
       do_open_execat+0x11d/0x5b0 fs/exec.c:853
       __do_execve_file+0x1a8b/0x2360 fs/exec.c:1770
       do_execveat_common fs/exec.c:1879 [inline]
       do_execve+0x35/0x50 fs/exec.c:1896
       __do_sys_execve fs/exec.c:1977 [inline]
       __se_sys_execve fs/exec.c:1972 [inline]
       __x64_sys_execve+0x7c/0xa0 fs/exec.c:1972
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #0 (&sig->cred_guard_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:937 [inline]
       __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078
       lock_trace fs/proc/base.c:402 [inline]
       proc_pid_stack+0x160/0x350 fs/proc/base.c:452
       proc_single_show+0xeb/0x170 fs/proc/base.c:755
       seq_read+0x4e0/0x11c0 fs/seq_file.c:232
       do_loop_readv_writev fs/read_write.c:701 [inline]
       do_loop_readv_writev fs/read_write.c:688 [inline]
       do_iter_read+0x471/0x630 fs/read_write.c:925
       vfs_readv+0xe5/0x150 fs/read_write.c:987
       do_preadv fs/read_write.c:1071 [inline]
       __do_sys_preadv fs/read_write.c:1121 [inline]
       __se_sys_preadv fs/read_write.c:1116 [inline]
       __x64_sys_preadv+0x22b/0x310 fs/read_write.c:1116
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

other info that might help us debug this:

Chain exists of:
  &sig->cred_guard_mutex --> sb_writers#3 --> &p->lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&p->lock);
                               lock(sb_writers#3);
                               lock(&p->lock);
  lock(&sig->cred_guard_mutex);

 *** DEADLOCK ***

1 lock held by syz-executor.0/31267:
 #0: 00000000ddf23219 (&p->lock){+.+.}, at: seq_read+0x6b/0x11c0 fs/seq_file.c:164

stack backtrace:
CPU: 1 PID: 31267 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222
 check_prev_add kernel/locking/lockdep.c:1866 [inline]
 check_prevs_add kernel/locking/lockdep.c:1979 [inline]
 validate_chain kernel/locking/lockdep.c:2420 [inline]
 __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __mutex_lock_common kernel/locking/mutex.c:937 [inline]
 __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078
 lock_trace fs/proc/base.c:402 [inline]
 proc_pid_stack+0x160/0x350 fs/proc/base.c:452
 proc_single_show+0xeb/0x170 fs/proc/base.c:755
 seq_read+0x4e0/0x11c0 fs/seq_file.c:232
 do_loop_readv_writev fs/read_write.c:701 [inline]
 do_loop_readv_writev fs/read_write.c:688 [inline]
 do_iter_read+0x471/0x630 fs/read_write.c:925
 vfs_readv+0xe5/0x150 fs/read_write.c:987
 do_preadv fs/read_write.c:1071 [inline]
 __do_sys_preadv fs/read_write.c:1121 [inline]
 __se_sys_preadv fs/read_write.c:1116 [inline]
 __x64_sys_preadv+0x22b/0x310 fs/read_write.c:1116
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3de7bee109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3de6563168 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007f3de7d00f60 RCX: 00007f3de7bee109
RDX: 0000000000000193 RSI: 00000000200017c0 RDI: 0000000000000004
RBP: 00007f3de7c480ad R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffec6a9fff R14: 00007f3de6563300 R15: 0000000000022000
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'.
MTD: Attempt to mount non-MTD device "/dev/loop2"
cramfs: wrong magic
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'.
MTD: Attempt to mount non-MTD device "/dev/loop2"
cramfs: wrong magic
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'.
MTD: Attempt to mount non-MTD device "/dev/loop2"
cramfs: wrong magic
device batadv0 entered promiscuous mode
device batadv0 entered promiscuous mode
FAT-fs (loop5): Unrecognized mount option "shorvname=winnt" or missing value
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'.
FAT-fs (loop5): Unrecognized mount option "shorvname=winnt" or missing value
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'.
overlayfs: overlapping lowerdir path
FAT-fs (loop5): Unrecognized mount option "shorvname=winnt" or missing value
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 1 PID: 31793 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc_track_caller+0x2a6/0x3c0 mm/slab.c:3742
 memdup_user+0x22/0xb0 mm/util.c:160
 strndup_user+0x70/0x120 mm/util.c:217
 keyctl_join_session_keyring security/keys/keyctl.c:285 [inline]
 __do_sys_keyctl security/keys/keyctl.c:1710 [inline]
 __se_sys_keyctl+0x33f/0x3f0 security/keys/keyctl.c:1701
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f11a43f4109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f11a2d69168 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f11a4506f60 RCX: 00007f11a43f4109
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000001
RBP: 00007f11a2d691d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff8dbc442f R14: 00007f11a2d69300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 31807 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000)
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
UDF-fs: error (device loop3): udf_read_inode: (ino 1409) failed !bh
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc+0x277/0x370 mm/slab.c:3557
 prepare_creds+0x39/0x510 kernel/cred.c:255
 join_session_keyring+0x14/0x340 security/keys/process_keys.c:778
 keyctl_join_session_keyring security/keys/keyctl.c:297 [inline]
 __do_sys_keyctl security/keys/keyctl.c:1710 [inline]
 __se_sys_keyctl+0x3ab/0x3f0 security/keys/keyctl.c:1701
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f11a43f4109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f11a2d69168 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f11a4506f60 RCX: 00007f11a43f4109
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000001
RBP: 00007f11a2d691d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff8dbc442f R14: 00007f11a2d69300 R15: 0000000000022000
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000)
UDF-fs: error (device loop3): udf_read_inode: (ino 1409) failed !bh
CPU: 1 PID: 31829 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc+0x277/0x370 mm/slab.c:3557
 kmem_cache_zalloc include/linux/slab.h:699 [inline]
 key_alloc+0x3cf/0x1170 security/keys/key.c:280
 keyring_alloc+0x42/0xb0 security/keys/keyring.c:499
 join_session_keyring+0x2c1/0x340 security/keys/process_keys.c:803
 keyctl_join_session_keyring security/keys/keyctl.c:297 [inline]
 __do_sys_keyctl security/keys/keyctl.c:1710 [inline]
 __se_sys_keyctl+0x3ab/0x3f0 security/keys/keyctl.c:1701
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f11a43f4109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f11a2d69168 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f11a4506f60 RCX: 00007f11a43f4109
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000001
RBP: 00007f11a2d691d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff8dbc442f R14: 00007f11a2d69300 R15: 0000000000022000
IPVS: ftp: loaded support on port[0] = 21
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000)
UDF-fs: error (device loop3): udf_read_inode: (ino 1409) failed !bh
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
CPU: 1 PID: 31908 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc_track_caller+0x2a6/0x3c0 mm/slab.c:3742
 kmemdup+0x23/0x50 mm/util.c:118
 kmemdup include/linux/string.h:450 [inline]
 key_alloc+0x426/0x1170 security/keys/key.c:285
 keyring_alloc+0x42/0xb0 security/keys/keyring.c:499
 join_session_keyring+0x2c1/0x340 security/keys/process_keys.c:803
 keyctl_join_session_keyring security/keys/keyctl.c:297 [inline]
 __do_sys_keyctl security/keys/keyctl.c:1710 [inline]
 __se_sys_keyctl+0x3ab/0x3f0 security/keys/keyctl.c:1701
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f11a43f4109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f11a2d69168 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f11a4506f60 RCX: 00007f11a43f4109
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000001
RBP: 00007f11a2d691d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff8dbc442f R14: 00007f11a2d69300 R15: 0000000000022000
kauditd_printk_skb: 74 callbacks suppressed
audit: type=1804 audit(1654981954.438:1236): pid=31956 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir4031164459/syzkaller.A2ztus/727/bus" dev="sda1" ino=14226 res=1
audit: type=1804 audit(1654981954.598:1237): pid=31975 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir4031164459/syzkaller.A2ztus/728/bus" dev="sda1" ino=14817 res=1
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'.
IPVS: ftp: loaded support on port[0] = 21
audit: type=1804 audit(1654981956.078:1238): pid=32019 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1084734583/syzkaller.Nv63L7/125/bus" dev="sda1" ino=15234 res=1
IPVS: ftp: loaded support on port[0] = 21
audit: type=1804 audit(1654981956.128:1239): pid=32020 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir4031164459/syzkaller.A2ztus/729/bus" dev="sda1" ino=15105 res=1
audit: type=1804 audit(1654981957.068:1240): pid=32091 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1084734583/syzkaller.Nv63L7/126/bus" dev="sda1" ino=15537 res=1
audit: type=1804 audit(1654981957.228:1241): pid=32109 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir1084734583/syzkaller.Nv63L7/127/bus" dev="sda1" ino=14370 res=1
IPVS: ftp: loaded support on port[0] = 21
audit: type=1804 audit(1654981957.328:1242): pid=32116 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir2961226019/syzkaller.UgfiCB/790/bus" dev="sda1" ino=15543 res=1
audit: type=1804 audit(1654981957.328:1243): pid=32117 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir2086853898/syzkaller.8pO0nm/785/bus" dev="sda1" ino=15545 res=1
audit: type=1804 audit(1654981957.488:1244): pid=32152 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir2961226019/syzkaller.UgfiCB/791/bus" dev="sda1" ino=15547 res=1
audit: type=1804 audit(1654981957.578:1245): pid=32155 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir4031164459/syzkaller.A2ztus/733/bus" dev="sda1" ino=14370 res=1
overlayfs: failed to resolve '.*file0u*': -2
IPVS: ftp: loaded support on port[0] = 21
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
bridge0: port 2(bridge_slave_1) entered disabled state
bridge0: port 1(bridge_slave_0) entered disabled state