INFO: task syz-executor575:7721 blocked for more than 143 seconds.
Not tainted 5.1.0-rc4+ #139
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor575 D28096 7721 7697 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2877 [inline]
__schedule+0x817/0x1cc0 kernel/sched/core.c:3518
schedule+0x92/0x180 kernel/sched/core.c:3562
schedule_timeout+0x8ca/0xfd0 kernel/time/timer.c:1779
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common kernel/sched/completion.c:115 [inline]
wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136
crypto_wait_req include/linux/crypto.h:680 [inline]
_aead_recvmsg crypto/algif_aead.c:313 [inline]
aead_recvmsg+0x1492/0x1ab0 crypto/algif_aead.c:334
sock_recvmsg_nosec net/socket.c:881 [inline]
sock_recvmsg net/socket.c:888 [inline]
sock_recvmsg+0xd0/0x110 net/socket.c:884
sock_read_iter+0x299/0x3b0 net/socket.c:966
call_read_iter include/linux/fs.h:1860 [inline]
do_iter_readv_writev+0x700/0x8e0 fs/read_write.c:679
do_iter_read+0x27c/0x660 fs/read_write.c:920
vfs_readv+0xf0/0x160 fs/read_write.c:984
do_readv+0x15e/0x370 fs/read_write.c:1017
__do_sys_readv fs/read_write.c:1104 [inline]
__se_sys_readv fs/read_write.c:1101 [inline]
__x64_sys_readv+0x75/0xb0 fs/read_write.c:1101
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441349
Code: Bad RIP value.
RSP: 002b:00007ffc363867e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 00000000004a23d8 RCX: 0000000000441349
RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 000000000005805c R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402170
R13: 0000000000402200 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/1042:
#0: 000000006b31b694 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5061
1 lock held by rsyslogd/7584:
#0: 00000000d68df7ec (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801
2 locks held by getty/7673:
#0: 000000004be9d44d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000063f3d141 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7674:
#0: 0000000011a4c765 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000005aa22f34 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7675:
#0: 0000000084049795 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000000fb8c9d5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7676:
#0: 00000000b1c07397 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000a73dc40e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7677:
#0: 0000000017d23645 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000005e2e69d7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7678:
#0: 000000009864ac6e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000007ce6afd3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7679:
#0: 00000000d6aa2397 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000b88d8d41 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
1 lock held by syz-executor575/7721:
#0: 00000000d2abd3bf (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1520 [inline]
#0: 00000000d2abd3bf (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x215/0x540 crypto/af_alg.c:764
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1042 Comm: khungtaskd Not tainted 5.1.0-rc4+ #139
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+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
watchdog+0x9b7/0xec0 kernel/hung_task.c:288
kthread+0x357/0x430 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1: