syzbot


BUG: sleeping function called from invalid context in lock_sock_nested

Status: fixed on 2020/02/05 13:33
Reported-by: syzbot+634c670125c215347544@syzkaller.appspotmail.com
Fix commit: 6b544caa07e5 crypto: af_alg - Use bh_lock_sock in sk_destruct
First crash: 941d, last: 911d

Fix bisection: fixed by (bisect log) :
commit 6b544caa07e5672b69f2a8e5f80d72fa4ecf7671
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date: Thu Dec 5 05:45:05 2019 +0000

  crypto: af_alg - Use bh_lock_sock in sk_destruct

similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: sleeping function called from invalid context in lock_sock_nested (2) C done 3909 294d 387d 1/1 fixed on 2021/10/12 13:38
upstream BUG: sleeping function called from invalid context in lock_sock_nested (2) C done error 19391 325d 861d 22/22 fixed on 2021/11/10 13:22
linux-4.14 BUG: sleeping function called from invalid context in lock_sock_nested 1 1096d 1096d 0/1 auto-closed as invalid on 2019/10/30 11:24
linux-4.14 BUG: sleeping function called from invalid context in lock_sock_nested (2) syz done 1 881d 941d 1/1 fixed on 2020/03/04 10:17
upstream BUG: sleeping function called from invalid context in lock_sock_nested C 1232 865d 941d 16/22 fixed on 2020/02/18 14:31
linux-4.14 BUG: sleeping function called from invalid context in lock_sock_nested (3) syz 144 13d 387d 0/1 upstream: reported syz repro on 2021/06/10 20:33

Sample crash report:
8021q: adding VLAN 0 to HW filter on device batadv0
audit: type=1400 audit(1575512337.818:38): avc:  denied  { associate } for  pid=7662 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1
BUG: sleeping function called from invalid context at net/core/sock.c:2837
in_atomic(): 1, irqs_disabled(): 0, pid: 9, name: ksoftirqd/0
1 lock held by ksoftirqd/0/9:
 #0: 000000005fcaf749 (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:226 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 kernel/rcu/tree.c:2881
Preemption disabled at:
[<ffffffff878000f3>] __do_softirq+0xf3/0x921 kernel/softirq.c:269
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.87-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+0x197/0x210 lib/dump_stack.c:118
 ___might_sleep.cold+0x1bd/0x1f6 kernel/sched/core.c:6191
 __might_sleep+0x95/0x190 kernel/sched/core.c:6144
 lock_sock_nested+0x39/0x120 net/core/sock.c:2837
 lock_sock include/net/sock.h:1501 [inline]
 af_alg_release_parent+0x16a/0x240 crypto/af_alg.c:142
 hash_sock_destruct+0x164/0x1c0 crypto/algif_hash.c:428
 __sk_destruct+0x53/0x780 net/core/sock.c:1558
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:653 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645
 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

================================
WARNING: inconsistent lock state
4.19.87-syzkaller #0 Tainted: G        W        
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
ksoftirqd/0/9 [HC0[0]:SC1[3]:HE1:SE0] takes:
000000001b977edc (sk_lock-AF_ALG){+.?.}, at: lock_sock include/net/sock.h:1501 [inline]
000000001b977edc (sk_lock-AF_ALG){+.?.}, at: af_alg_release_parent+0x16a/0x240 crypto/af_alg.c:142
{SOFTIRQ-ON-W} state was registered at:
  __trace_hardirqs_on_caller kernel/locking/lockdep.c:2834 [inline]
  lockdep_hardirqs_on+0x415/0x5d0 kernel/locking/lockdep.c:2879
  trace_hardirqs_on+0x67/0x220 kernel/trace/trace_preemptirq.c:30
  __local_bh_enable_ip+0x15a/0x270 kernel/softirq.c:194
  local_bh_enable include/linux/bottom_half.h:32 [inline]
  lock_sock_nested+0xe2/0x120 net/core/sock.c:2847
  lock_sock include/net/sock.h:1501 [inline]
  alg_bind+0x288/0x570 crypto/af_alg.c:192
  __sys_bind+0x239/0x290 net/socket.c:1482
  __do_sys_bind net/socket.c:1493 [inline]
  __se_sys_bind net/socket.c:1491 [inline]
  __x64_sys_bind+0x73/0xb0 net/socket.c:1491
  do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
irq event stamp: 519352
hardirqs last  enabled at (519352): [<ffffffff81006693>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (519351): [<ffffffff810066af>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last  enabled at (519164): [<ffffffff87800633>] __do_softirq+0x633/0x921 kernel/softirq.c:318
softirqs last disabled at (519169): [<ffffffff8140479e>] run_ksoftirqd kernel/softirq.c:653 [inline]
softirqs last disabled at (519169): [<ffffffff8140479e>] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(sk_lock-AF_ALG);
  <Interrupt>
    lock(sk_lock-AF_ALG);

 *** DEADLOCK ***

1 lock held by ksoftirqd/0/9:
 #0: 000000005fcaf749 (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:226 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 #0: 000000005fcaf749 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 kernel/rcu/tree.c:2881

stack backtrace:
CPU: 0 PID: 9 Comm: ksoftirqd/0 Tainted: G        W         4.19.87-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+0x197/0x210 lib/dump_stack.c:118
 print_usage_bug.cold+0x330/0x42a kernel/locking/lockdep.c:2540
 valid_state kernel/locking/lockdep.c:2553 [inline]
 mark_lock_irq kernel/locking/lockdep.c:2747 [inline]
 mark_lock+0xd1b/0x1370 kernel/locking/lockdep.c:3127
 mark_irqflags kernel/locking/lockdep.c:3005 [inline]
 __lock_acquire+0xc62/0x49c0 kernel/locking/lockdep.c:3368
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903
 lock_sock_nested+0xcb/0x120 net/core/sock.c:2846
 lock_sock include/net/sock.h:1501 [inline]
 af_alg_release_parent+0x16a/0x240 crypto/af_alg.c:142
 hash_sock_destruct+0x164/0x1c0 crypto/algif_hash.c:428
 __sk_destruct+0x53/0x780 net/core/sock.c:1558
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:653 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645
 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
BUG: sleeping function called from invalid context at net/core/sock.c:2837
in_atomic(): 1, irqs_disabled(): 0, pid: 7627, name: udevd
INFO: lockdep is turned off.
Preemption disabled at:
[<ffffffff878000f3>] __do_softirq+0xf3/0x921 kernel/softirq.c:269
CPU: 1 PID: 7627 Comm: udevd Tainted: G        W         4.19.87-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 ___might_sleep.cold+0x1bd/0x1f6 kernel/sched/core.c:6191
 __might_sleep+0x95/0x190 kernel/sched/core.c:6144
 lock_sock_nested+0x39/0x120 net/core/sock.c:2837
 lock_sock include/net/sock.h:1501 [inline]
 af_alg_release_parent+0x16a/0x240 crypto/af_alg.c:142
 hash_sock_destruct+0x164/0x1c0 crypto/algif_hash.c:428
 __sk_destruct+0x53/0x780 net/core/sock.c:1558
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0x1/0x50 kernel/kcov.c:94
Code: bc f4 ff ff ff e8 43 65 ea ff 48 c7 05 d4 38 5e 09 00 00 00 00 e9 96 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <48> 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 78 d9 96
RSP: 0018:ffff8880964d77d0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff11012c9af04
RDX: 1ffff1101066a886 RSI: ffffffff8185534c RDI: ffff888083354430
RBP: ffff8880964d78a8 R08: ffff8880833540c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888098ca2d50
R13: ffff888098ca2d50 R14: 0000000000000004 R15: dffffc0000000000
 find_lock_entry+0x31/0x5f0 mm/filemap.c:1518
 shmem_getpage_gfp+0x1e8/0x3930 mm/shmem.c:1651
 shmem_getpage mm/shmem.c:132 [inline]
 shmem_write_begin+0x10b/0x1e0 mm/shmem.c:2432
 generic_perform_write+0x22a/0x520 mm/filemap.c:3162
 __generic_file_write_iter+0x25e/0x630 mm/filemap.c:3287
 generic_file_write_iter+0x383/0x72f mm/filemap.c:3315
 call_write_iter include/linux/fs.h:1820 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x587/0x810 fs/read_write.c:487
 vfs_write+0x20c/0x560 fs/read_write.c:549
 ksys_write+0x14f/0x2d0 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:608
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fb1c50fe370
Code: 73 01 c3 48 8b 0d c8 4a 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d 85 a2 2b 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 0e 8a 01 00 48 89 04 24
RSP: 002b:00007ffde2a507a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000019 RCX: 00007fb1c50fe370
RDX: 0000000000000019 RSI: 00007fb1c59fd000 RDI: 0000000000000005
RBP: 00007fb1c59fd000 R08: 00007fb1c59f67a0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001a35020
R13: 0000000000000019 R14: 00007ffde2a50890 R15: 0000000000000001
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
BUG: sleeping function called from invalid context at net/core/sock.c:2837
in_atomic(): 1, irqs_disabled(): 0, pid: 18, name: ksoftirqd/1
INFO: lockdep is turned off.
Preemption disabled at:
[<ffffffff878000f3>] __do_softirq+0xf3/0x921 kernel/softirq.c:269
CPU: 1 PID: 18 Comm: ksoftirqd/1 Tainted: G        W         4.19.87-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+0x197/0x210 lib/dump_stack.c:118
 ___might_sleep.cold+0x1bd/0x1f6 kernel/sched/core.c:6191
 __might_sleep+0x95/0x190 kernel/sched/core.c:6144
 lock_sock_nested+0x39/0x120 net/core/sock.c:2837
 lock_sock include/net/sock.h:1501 [inline]
 af_alg_release_parent+0x16a/0x240 crypto/af_alg.c:142
 hash_sock_destruct+0x164/0x1c0 crypto/algif_hash.c:428
 __sk_destruct+0x53/0x780 net/core/sock.c:1558
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881
 __do_softirq+0x25c/0x921 kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:653 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:645
 smpboot_thread_fn+0x6a3/0xa30 kernel/smpboot.c:164
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env
kobject: 'loop0' (00000000f389e3af): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop0' (00000000f389e3af): kobject_uevent_env

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-19 2019/12/05 02:23 linux-4.19.y 174651bdf802 b2088328 .config log report syz