INFO: task hung in lock_sock_nested
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syzbot
Dec 10, 2017, 8:37:03 AM12/10/17
to linux-...@vger.kernel.org, mi...@redhat.com, pet...@infradead.org, syzkall...@googlegroups.com
Hello,
syzkaller hit the following crash on
51e18a453f5f59a40c721d4aeab082b4e2e9fac6
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/master
compiler: gcc (GCC) 7.1.1 20170620
.config is attached
Raw console output is attached.
Unfortunately, I don't have any reproducer for this bug yet.
RDS: rds_bind could not find a transport for 172.20.1.187, load rds_tcp or
rds_rdma?
INFO: task syz-executor2:19495 blocked for more than 120 seconds.
Not tainted 4.15.0-rc2+ #148
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor2 D25200 19495 3406 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2799 [inline]
__schedule+0x8eb/0x2060 kernel/sched/core.c:3375
schedule+0xf5/0x430 kernel/sched/core.c:3434
__lock_sock+0x1dc/0x2f0 net/core/sock.c:2240
lock_sock_nested+0xf3/0x110 net/core/sock.c:2764
lock_sock include/net/sock.h:1461 [inline]
af_alg_sendmsg+0x349/0x1080 crypto/af_alg.c:858
aead_sendmsg+0x103/0x150 crypto/algif_aead.c:76
sock_sendmsg_nosec net/socket.c:636 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:646
___sys_sendmsg+0x75b/0x8a0 net/socket.c:2026
__sys_sendmsg+0xe5/0x210 net/socket.c:2060
SYSC_sendmsg net/socket.c:2071 [inline]
SyS_sendmsg+0x2d/0x50 net/socket.c:2067
entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f63f58cfc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000040 RSI: 0000000020630000 RDI: 0000000000000015
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee0b8
R13: 00000000ffffffff R14: 00007f63f58d06d4 R15: 0000000000000000
Showing all locks held in the system:
2 locks held by khungtaskd/663:
#0: (rcu_read_lock){....}, at: [<00000000b2540f7c>]
check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline]
#0: (rcu_read_lock){....}, at: [<00000000b2540f7c>] watchdog+0x1c5/0xd60
kernel/hung_task.c:249
#1: (tasklist_lock){.+.+}, at: [<00000000b425f323>]
debug_show_all_locks+0xd3/0x400 kernel/locking/lockdep.c:4554
1 lock held by rsyslogd/3008:
#0: (&f->f_pos_lock){+.+.}, at: [<00000000d620dede>]
__fdget_pos+0x131/0x1a0 fs/file.c:770
2 locks held by getty/3130:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3131:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3132:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3133:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3134:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3135:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3136:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
1 lock held by syz-executor2/19506:
#0: (sk_lock-AF_ALG){+.+.}, at: [<00000000bb9361fc>] lock_sock
include/net/sock.h:1461 [inline]
#0: (sk_lock-AF_ALG){+.+.}, at: [<00000000bb9361fc>]
aead_recvmsg+0xb3/0x1bc0 crypto/algif_aead.c:327
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 663 Comm: khungtaskd Not tainted 4.15.0-rc2+ #148
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103
nmi_trigger_cpumask_backtrace+0x122/0x180 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:138 [inline]
check_hung_task kernel/hung_task.c:132 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline]
watchdog+0x90c/0xd60 kernel/hung_task.c:249
kthread+0x37a/0x440 kernel/kthread.c:238
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc2+ #148
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:atomic_inc arch/x86/include/asm/atomic.h:92 [inline]
RIP: 0010:__lock_acquire+0x1d7/0x47f0 kernel/locking/lockdep.c:3391
RSP: 0018:ffff8801db406fe0 EFLAGS: 00000006
RAX: ffffffff86faabf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffff1003b684b54 RSI: 0000000000000000 RDI: ffff8801db425aa0
RBP: ffff8801db407368 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff8748bd20 R12: ffffffff85e2f380
R13: 0000000000000000 R14: 0000000000000001 R15: ffff8801db425a98
FS: 0000000000000000(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe02dc12000 CR3: 00000001d7695000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:159
rq_lock_irqsave kernel/sched/sched.h:1750 [inline]
update_blocked_averages+0x124/0x1b60 kernel/sched/fair.c:7353
rebalance_domains+0x145/0xcc0 kernel/sched/fair.c:9122
run_rebalance_domains+0x381/0x780 kernel/sched/fair.c:9383
__do_softirq+0x29d/0xbb2 kernel/softirq.c:285
invoke_softirq kernel/softirq.c:365 [inline]
irq_exit+0x1d3/0x210 kernel/softirq.c:405
scheduler_ipi+0x32a/0x830 kernel/sched/core.c:1803
smp_reschedule_interrupt+0xe6/0x670 arch/x86/kernel/smp.c:277
reschedule_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:819
</IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54
RSP: 0018:ffffffff85e07d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02
RAX: dffffc0000000000 RBX: 1ffffffff0bc0fa4 RCX: 0000000000000000
RDX: 1ffffffff0bd9734 RSI: 0000000000000001 RDI: ffffffff85ecb9a0
RBP: ffffffff85e07d08 R08: ffffffff85beaae0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff85e07dc0 R14: ffffffff865eb5e0 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:93 [inline]
default_idle+0xbf/0x460 arch/x86/kernel/process.c:348
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:339
default_idle_call+0x36/0x90 kernel/sched/idle.c:98
cpuidle_idle_call kernel/sched/idle.c:156 [inline]
do_idle+0x24a/0x3b0 kernel/sched/idle.c:246
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:351
rest_init+0xed/0xf0 init/main.c:435
start_kernel+0x729/0x74f init/main.c:710
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378
x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237
Code: 48 85 c0 44 8b 95 28 fd ff ff 8b 8d 20 fd ff ff 44 8b 8d 18 fd ff ff
4c 8b 9d 10 fd ff ff 0f 84 26 0b 00 00 f0 ff 80 38 01 00 00 <49> 8d b4 24
80 08 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 b5
---
This bug is generated by a dumb bot. It may contain errors.
See https://goo.gl/tpsmEJ for details.
Direct all questions to syzk...@googlegroups.com.
Please credit me with: Reported-by: syzbot <syzk...@googlegroups.com>
syzbot will keep track of this bug report.
Once a fix for this bug is merged into any tree, reply to this email with:
#syz fix: exact-commit-title
To mark this as a duplicate of another syzbot report, please reply with:
#syz dup: exact-subject-of-another-report
If it's a one-off invalid bug report, please reply with:
#syz invalid
Note: if the crash happens again, it will cause creation of a new bug
report.
Note: all commands must start from beginning of the line in the email body.
syzkaller hit the following crash on
51e18a453f5f59a40c721d4aeab082b4e2e9fac6
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/master
compiler: gcc (GCC) 7.1.1 20170620
.config is attached
Raw console output is attached.
Unfortunately, I don't have any reproducer for this bug yet.
RDS: rds_bind could not find a transport for 172.20.1.187, load rds_tcp or
rds_rdma?
INFO: task syz-executor2:19495 blocked for more than 120 seconds.
Not tainted 4.15.0-rc2+ #148
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor2 D25200 19495 3406 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2799 [inline]
__schedule+0x8eb/0x2060 kernel/sched/core.c:3375
schedule+0xf5/0x430 kernel/sched/core.c:3434
__lock_sock+0x1dc/0x2f0 net/core/sock.c:2240
lock_sock_nested+0xf3/0x110 net/core/sock.c:2764
lock_sock include/net/sock.h:1461 [inline]
af_alg_sendmsg+0x349/0x1080 crypto/af_alg.c:858
aead_sendmsg+0x103/0x150 crypto/algif_aead.c:76
sock_sendmsg_nosec net/socket.c:636 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:646
___sys_sendmsg+0x75b/0x8a0 net/socket.c:2026
__sys_sendmsg+0xe5/0x210 net/socket.c:2060
SYSC_sendmsg net/socket.c:2071 [inline]
SyS_sendmsg+0x2d/0x50 net/socket.c:2067
entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f63f58cfc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000040 RSI: 0000000020630000 RDI: 0000000000000015
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee0b8
R13: 00000000ffffffff R14: 00007f63f58d06d4 R15: 0000000000000000
Showing all locks held in the system:
2 locks held by khungtaskd/663:
#0: (rcu_read_lock){....}, at: [<00000000b2540f7c>]
check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline]
#0: (rcu_read_lock){....}, at: [<00000000b2540f7c>] watchdog+0x1c5/0xd60
kernel/hung_task.c:249
#1: (tasklist_lock){.+.+}, at: [<00000000b425f323>]
debug_show_all_locks+0xd3/0x400 kernel/locking/lockdep.c:4554
1 lock held by rsyslogd/3008:
#0: (&f->f_pos_lock){+.+.}, at: [<00000000d620dede>]
__fdget_pos+0x131/0x1a0 fs/file.c:770
2 locks held by getty/3130:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3131:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3132:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3133:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3134:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3135:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
2 locks held by getty/3136:
#0: (&tty->ldisc_sem){++++}, at: [<00000000ed362dba>]
ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002bd4e259>]
n_tty_read+0x2f2/0x1a10 drivers/tty/n_tty.c:2131
1 lock held by syz-executor2/19506:
#0: (sk_lock-AF_ALG){+.+.}, at: [<00000000bb9361fc>] lock_sock
include/net/sock.h:1461 [inline]
#0: (sk_lock-AF_ALG){+.+.}, at: [<00000000bb9361fc>]
aead_recvmsg+0xb3/0x1bc0 crypto/algif_aead.c:327
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 663 Comm: khungtaskd Not tainted 4.15.0-rc2+ #148
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103
nmi_trigger_cpumask_backtrace+0x122/0x180 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:138 [inline]
check_hung_task kernel/hung_task.c:132 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline]
watchdog+0x90c/0xd60 kernel/hung_task.c:249
kthread+0x37a/0x440 kernel/kthread.c:238
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc2+ #148
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:atomic_inc arch/x86/include/asm/atomic.h:92 [inline]
RIP: 0010:__lock_acquire+0x1d7/0x47f0 kernel/locking/lockdep.c:3391
RSP: 0018:ffff8801db406fe0 EFLAGS: 00000006
RAX: ffffffff86faabf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffff1003b684b54 RSI: 0000000000000000 RDI: ffff8801db425aa0
RBP: ffff8801db407368 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff8748bd20 R12: ffffffff85e2f380
R13: 0000000000000000 R14: 0000000000000001 R15: ffff8801db425a98
FS: 0000000000000000(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe02dc12000 CR3: 00000001d7695000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:159
rq_lock_irqsave kernel/sched/sched.h:1750 [inline]
update_blocked_averages+0x124/0x1b60 kernel/sched/fair.c:7353
rebalance_domains+0x145/0xcc0 kernel/sched/fair.c:9122
run_rebalance_domains+0x381/0x780 kernel/sched/fair.c:9383
__do_softirq+0x29d/0xbb2 kernel/softirq.c:285
invoke_softirq kernel/softirq.c:365 [inline]
irq_exit+0x1d3/0x210 kernel/softirq.c:405
scheduler_ipi+0x32a/0x830 kernel/sched/core.c:1803
smp_reschedule_interrupt+0xe6/0x670 arch/x86/kernel/smp.c:277
reschedule_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:819
</IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54
RSP: 0018:ffffffff85e07d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02
RAX: dffffc0000000000 RBX: 1ffffffff0bc0fa4 RCX: 0000000000000000
RDX: 1ffffffff0bd9734 RSI: 0000000000000001 RDI: ffffffff85ecb9a0
RBP: ffffffff85e07d08 R08: ffffffff85beaae0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff85e07dc0 R14: ffffffff865eb5e0 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:93 [inline]
default_idle+0xbf/0x460 arch/x86/kernel/process.c:348
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:339
default_idle_call+0x36/0x90 kernel/sched/idle.c:98
cpuidle_idle_call kernel/sched/idle.c:156 [inline]
do_idle+0x24a/0x3b0 kernel/sched/idle.c:246
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:351
rest_init+0xed/0xf0 init/main.c:435
start_kernel+0x729/0x74f init/main.c:710
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378
x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237
Code: 48 85 c0 44 8b 95 28 fd ff ff 8b 8d 20 fd ff ff 44 8b 8d 18 fd ff ff
4c 8b 9d 10 fd ff ff 0f 84 26 0b 00 00 f0 ff 80 38 01 00 00 <49> 8d b4 24
80 08 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 b5
---
This bug is generated by a dumb bot. It may contain errors.
See https://goo.gl/tpsmEJ for details.
Direct all questions to syzk...@googlegroups.com.
Please credit me with: Reported-by: syzbot <syzk...@googlegroups.com>
syzbot will keep track of this bug report.
Once a fix for this bug is merged into any tree, reply to this email with:
#syz fix: exact-commit-title
To mark this as a duplicate of another syzbot report, please reply with:
#syz dup: exact-subject-of-another-report
If it's a one-off invalid bug report, please reply with:
#syz invalid
Note: if the crash happens again, it will cause creation of a new bug
report.
Note: all commands must start from beginning of the line in the email body.
Dmitry Vyukov
Dec 12, 2017, 11:47:56 AM12/12/17
to syzbot, LKML, Ingo Molnar, Peter Zijlstra, syzkall...@googlegroups.com, Herbert Xu, David Miller, linux-...@vger.kernel.org, Eric Biggers
On Sun, Dec 10, 2017 at 2:37 PM, syzbot
<bot+b09be8359497f2f986...@syzkaller.appspotmail.com>
wrote:
+crypto maintainers
this is crypto, not sched
> ---
> This bug is generated by a dumb bot. It may contain errors.
> See https://goo.gl/tpsmEJ for details.
> Direct all questions to syzk...@googlegroups.com.
> Please credit me with: Reported-by: syzbot <syzk...@googlegroups.com>
>
> syzbot will keep track of this bug report.
> Once a fix for this bug is merged into any tree, reply to this email with:
> #syz fix: exact-commit-title
> To mark this as a duplicate of another syzbot report, please reply with:
> #syz dup: exact-subject-of-another-report
> If it's a one-off invalid bug report, please reply with:
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<bot+b09be8359497f2f986...@syzkaller.appspotmail.com>
wrote:
this is crypto, not sched
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Eric Biggers
Dec 23, 2017, 3:15:52 PM12/23/17
to Dmitry Vyukov, syzbot, LKML, Ingo Molnar, Peter Zijlstra, syzkall...@googlegroups.com, Herbert Xu, David Miller, linux-...@vger.kernel.org
#syz dup: INFO: task hung in aead_recvmsg
There is a thread hung in aead_recvmsg() while holding the socket lock, so it's
blocking other threads too.
Eric
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