Extracting prog: 8m3.955811621s
Minimizing prog: 18m22.178893036s
Simplifying prog options: 20m35.136363879s
Extracting C: 5m15.196784536s
Simplifying C: 0s
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program crashed: INFO: rcu detected stall in corrupted
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, 0x0, 0x0)
program did not crash
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB, @ANYRES64], 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=9m2.370886411s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program did not crash
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program did not crash
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program did not crash
validation run: crashed=false
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program crashed: INFO: task hung in __input_unregister_device
validation run: crashed=true
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program crashed: INFO: task hung in wg_netns_pre_exit
validation run: crashed=true
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program crashed: INFO: task hung in corrupted
validation run: crashed=true
reproducing took 1h25m21.247497732s
repro crashed as (corrupted=true):
INFO: task kworker/1:8:6116 blocked for more than 152 seconds.
Not tainted syzkaller #0
report is corrupted, running repro again
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program did not crash
report is corrupted, running repro again
testing program (duration=9m2.370886411s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000280)=ANY=[@ANYBLOB="12010000eafa7240936901b0293df400100109021b000124a800800904000001030000000905", @ANYRES64], 0x0)
program crashed: INFO: task hung in genl_rcv_msg
final repro crashed as (corrupted=false):
INFO: task dhcpcd:5487 blocked for more than 153 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D
stack:24664 pid:5487 tgid:5487 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
genl_lock net/netlink/genetlink.c:35 [inline]
genl_op_lock net/netlink/genetlink.c:60 [inline]
genl_rcv_msg+0x10d/0x790 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:742
____sys_sendmsg+0x505/0x820 net/socket.c:2592
___sys_sendmsg+0x21f/0x2a0 net/socket.c:2646
__sys_sendmsg net/socket.c:2678 [inline]
__do_sys_sendmsg net/socket.c:2683 [inline]
__se_sys_sendmsg net/socket.c:2681 [inline]
__x64_sys_sendmsg+0x19b/0x260 net/socket.c:2681
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc36ee0f407
RSP: 002b:00007ffd356adeb0 EFLAGS: 00000202
ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc36ed85740 RCX: 00007fc36ee0f407
RDX: 0000000000000000 RSI: 00007ffd356adf30 RDI: 000000000000000e
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000055947a4cee10
R13: 000000000000000e R14: 00007ffd356c23f0 R15: 000055949a95e2e0
INFO: task syz-executor:6160 blocked for more than 153 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:21592 pid:6160 tgid:6160 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
genl_lock net/netlink/genetlink.c:35 [inline]
genl_op_lock net/netlink/genetlink.c:60 [inline]
genl_rcv_msg+0x10d/0x790 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:742
__sys_sendto+0x3bd/0x520 net/socket.c:2206
__do_sys_sendto net/socket.c:2213 [inline]
__se_sys_sendto net/socket.c:2209 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8aaf3915dc
RSP: 002b:00007fff250749a0 EFLAGS: 00000293
ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f8ab0114620 RCX: 00007f8aaf3915dc
RDX: 0000000000000020 RSI: 00007f8ab0114670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff250749f4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007fff25074a48 R14: 00007f8ab0114670 R15: 0000000000000000
INFO: task syz-executor:6175 blocked for more than 154 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:21592 pid:6175 tgid:6175 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
genl_lock net/netlink/genetlink.c:35 [inline]
genl_op_lock net/netlink/genetlink.c:60 [inline]
genl_rcv_msg+0x10d/0x790 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:742
__sys_sendto+0x3bd/0x520 net/socket.c:2206
__do_sys_sendto net/socket.c:2213 [inline]
__se_sys_sendto net/socket.c:2209 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3dfd5915dc
RSP: 002b:00007ffe15892ea0 EFLAGS: 00000293
ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f3dfe314620 RCX: 00007f3dfd5915dc
RDX: 0000000000000024 RSI: 00007f3dfe314670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffe15892ef4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f3dfe314670 R15: 0000000000000000
INFO: task syz-executor:6456 blocked for more than 155 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:28088 pid:6456 tgid:6456 ppid:1 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
kobject_uevent_env+0x55c/0x9f0 lib/kobject_uevent.c:608
device_add+0x557/0xb80 drivers/base/core.c:3670
hci_register_dev+0x36c/0x8b0 net/bluetooth/hci_core.c:2621
__vhci_create_device drivers/bluetooth/hci_vhci.c:451 [inline]
vhci_create_device+0x39c/0x650 drivers/bluetooth/hci_vhci.c:479
vhci_get_user drivers/bluetooth/hci_vhci.c:536 [inline]
vhci_write+0x3ce/0x4a0 drivers/bluetooth/hci_vhci.c:616
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f020d18e1c0
RSP: 002b:00007ffd86c5c968 EFLAGS: 00000202
ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f020d18e1c0
RDX: 0000000000000002 RSI: 00007ffd86c5c97a RDI: 00000000000000ca
RBP: 00007ffd86c5ca40 R08: 0000000000000000 R09: 00007f020df1d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 00007ffd86c5ca48 R14: 00007ffd86c5ccc8 R15: 0000000000000000
INFO: task syz-executor:6457 blocked for more than 156 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:27160 pid:6457 tgid:6457 ppid:1 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
kobject_uevent_env+0x55c/0x9f0 lib/kobject_uevent.c:608
device_add+0x557/0xb80 drivers/base/core.c:3670
hci_register_dev+0x36c/0x8b0 net/bluetooth/hci_core.c:2621
__vhci_create_device drivers/bluetooth/hci_vhci.c:451 [inline]
vhci_create_device+0x39c/0x650 drivers/bluetooth/hci_vhci.c:479
vhci_get_user drivers/bluetooth/hci_vhci.c:536 [inline]
vhci_write+0x3ce/0x4a0 drivers/bluetooth/hci_vhci.c:616
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efd9898e1c0
RSP: 002b:00007ffd2934efb8 EFLAGS: 00000202
ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007efd9898e1c0
RDX: 0000000000000002 RSI: 00007ffd2934efca RDI: 00000000000000ca
RBP: 00007ffd2934f090 R08: 0000000000000000 R09: 00007efd9971d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 00007ffd2934f098 R14: 00007ffd2934f318 R15: 0000000000000000
INFO: task syz-executor:6458 blocked for more than 156 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:28088 pid:6458 tgid:6458 ppid:1 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
kobject_uevent_env+0x55c/0x9f0 lib/kobject_uevent.c:608
device_add+0x557/0xb80 drivers/base/core.c:3670
hci_register_dev+0x36c/0x8b0 net/bluetooth/hci_core.c:2621
__vhci_create_device drivers/bluetooth/hci_vhci.c:451 [inline]
vhci_create_device+0x39c/0x650 drivers/bluetooth/hci_vhci.c:479
vhci_get_user drivers/bluetooth/hci_vhci.c:536 [inline]
vhci_write+0x3ce/0x4a0 drivers/bluetooth/hci_vhci.c:616
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd00458e1c0
RSP: 002b:00007ffdfbf99e98 EFLAGS: 00000202
ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd00458e1c0
RDX: 0000000000000002 RSI: 00007ffdfbf99eaa RDI: 00000000000000ca
RBP: 00007ffdfbf99f70 R08: 0000000000000000 R09: 00007fd00531d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 00007ffdfbf99f78 R14: 00007ffdfbf9a1f8 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by kthreadd/2:
1 lock held by khungtaskd/32:
#0: ffffffff8df41aa0
(rcu_read_lock
){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
8 locks held by kworker/u8:2/37:
3 locks held by kworker/u8:4/60:
4 locks held by kworker/u8:5/136:
2 locks held by kworker/0:2/773:
3 locks held by kworker/u8:8/1947:
3 locks held by kworker/u8:9/3414:
3 locks held by kworker/u8:11/3727:
5 locks held by kworker/u9:1/5143:
1 lock held by jbd2/sda1-8/5155:
1 lock held by klogd/5182:
1 lock held by udevd/5193:
2 locks held by dhcpcd/5487:
#0:
ffffffff8f379ab0
(cb_lock
){++++}-{4:4}
, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1:
ffffffff8f3798c8
(
genl_mutex){+.+.}-{4:4}
, at: genl_lock net/netlink/genetlink.c:35 [inline]
, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
, at: genl_rcv_msg+0x10d/0x790 net/netlink/genetlink.c:1209
2 locks held by getty/5582:
#0:
ffff88814e0d70a0
(
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1:
ffffc9000332b2f0
(
&ldata->atomic_read_lock
){+.+.}-{4:4}
, at: n_tty_read+0x449/0x1460 drivers/tty/n_tty.c:2211
7 locks held by kworker/0:3/5867:
5 locks held by kworker/u9:2/5888:
#0:
ffff8880795b4148
(
(wq_completion)hci10
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
#1:
ffffc9000425fbc0
(
(work_completion)(&hdev->cmd_sync_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
#2:
ffff888031a24ec0
(
&hdev->req_lock
){+.+.}-{4:4}
, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331
#3: ffff888031a240c0
(&hdev->lock
){+.+.}-{4:4}
, at: hci_abort_conn_sync+0x242/0xe30 net/bluetooth/hci_sync.c:5702
#4:
ffffffff8f483a08
(hci_cb_list_lock
){+.+.}-{4:4}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline]
, at: hci_conn_failed+0x165/0x340 net/bluetooth/hci_conn.c:1336
5 locks held by kworker/u9:4/5951:
#0:
ffff88807959e948
((wq_completion)hci11
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
#1: ffffc90003c6fbc0
(
(work_completion)(&hdev->cmd_sync_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
#2:
ffff88807eaa8ec0
(
&hdev->req_lock
){+.+.}-{4:4}
, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331
#3: ffff88807eaa80c0
(&hdev->lock
){+.+.}-{4:4}
, at: hci_abort_conn_sync+0x242/0xe30 net/bluetooth/hci_sync.c:5702
#4: ffffffff8f483a08
(hci_cb_list_lock
){+.+.}-{4:4}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline]
, at: hci_conn_failed+0x165/0x340 net/bluetooth/hci_conn.c:1336
5 locks held by kworker/u9:5/5954:
#0: ffff88802f6e8148
(
(wq_completion)hci6
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
#1:
ffffc90003c4fbc0
(
(work_completion)(&hdev->cmd_sync_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
#2:
ffff888029cf0ec0
(
&hdev->req_lock
){+.+.}-{4:4}
, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331
#3: ffff888029cf00c0
(&hdev->lock
){+.+.}-{4:4}
, at: hci_abort_conn_sync+0x242/0xe30 net/bluetooth/hci_sync.c:5702
#4:
ffffffff8f483a08
(hci_cb_list_lock
){+.+.}-{4:4}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline]
, at: hci_conn_failed+0x165/0x340 net/bluetooth/hci_conn.c:1336
5 locks held by kworker/u9:6/5957:
#0:
ffff888031d84148
(
(wq_completion)hci9
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
#1: ffffc90003bffbc0
((work_completion)(&hdev->cmd_sync_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
#2:
ffff888060f60ec0
(
&hdev->req_lock
){+.+.}-{4:4}
, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331
#3:
ffff888060f600c0
(&hdev->lock
){+.+.}-{4:4}
, at: hci_abort_conn_sync+0x242/0xe30 net/bluetooth/hci_sync.c:5702
#4:
ffffffff8df475f8
(
rcu_state.exp_mutex
){+.+.}-{4:4}
, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
, at: synchronize_rcu_expedited+0x2b1/0x6e0 kernel/rcu/tree_exp.h:956
5 locks held by kworker/u9:7/5958:
#0:
ffff88805c368948
(
(wq_completion)hci8
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
#1:
ffffc90003befbc0
(
(work_completion)(&hdev->cmd_sync_work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
#2:
ffff8880748ecec0
(&hdev->req_lock
){+.+.}-{4:4}
, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331
#3: ffff8880748ec0c0
(&hdev->lock
){+.+.}-{4:4}
, at: hci_abort_conn_sync+0x242/0xe30 net/bluetooth/hci_sync.c:5702
#4: ffffffff8f483a08
(
hci_cb_list_lock
){+.+.}-{4:4}
, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2128 [inline]
, at: hci_conn_failed+0x165/0x340 net/bluetooth/hci_conn.c:1336
6 locks held by kworker/1:5/6051:
2 locks held by kworker/0:7/6145:
4 locks held by kworker/u8:15/6149:
6 locks held by kworker/1:10/6157:
#0:
ffff888142a96148
(
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3232 [inline]
, at: process_scheduled_works+0x9b4/0x1770 kernel/workqueue.c:3340
#1: ffffc90003a77bc0
((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3233 [inline]
, at: process_scheduled_works+0x9ef/0x1770 kernel/workqueue.c:3340
#2:
ffff888028241198
(
&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: hub_event+0x187/0x4ef0 drivers/usb/core/hub.c:5899
#3:
ffff8880292b7198
(
&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: usb_disconnect+0xf8/0x990 drivers/usb/core/hub.c:2336
#4:
ffff88807925f160
(
&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:895 [inline]
, at: __device_driver_lock drivers/base/dd.c:1104 [inline]
, at: device_release_driver_internal+0xb6/0x800 drivers/base/dd.c:1302
#5:
ffffffff8ed97fe8
(
input_mutex){+.+.}-{4:4}
, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
, at: __input_unregister_device+0x328/0x640 drivers/input/input.c:2187
2 locks held by syz-executor/6160:
#0: ffffffff8f379ab0
(cb_lock
){++++}-{4:4}
, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1:
ffffffff8f3798c8
(genl_mutex
){+.+.}-{4:4}
, at: genl_lock net/netlink/genetlink.c:35 [inline]
, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
, at: genl_rcv_msg+0x10d/0x790 net/netlink/genetlink.c:1209
2 locks held by kworker/u8:16/6163:
2 locks held by syz-executor/6175:
#0:
ffffffff8f379ab0
(
cb_lock
){++++}-{4:4}
, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1:
ffffffff8f3798c8
(
genl_mutex
){+.+.}-{4:4}
, at: genl_lock net/netlink/genetlink.c:35 [inline]
, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
, at: genl_rcv_msg+0x10d/0x790 net/netlink/genetlink.c:1209
3 locks held by syz-executor/6178:
4 locks held by udevd/6408:
#0:
ffff88807837b668
(
&p->lock
){+.+.}-{4:4}
, at: seq_read_iter+0xb7/0xe20 fs/seq_file.c:182
#1: ffff88805bc64088
(&of->mutex
#2){+.+.}-{4:4}
, at: kernfs_seq_start+0x5c/0x420 fs/kernfs/file.c:172
#2:
ffff88807647a008
(
kn->active
#28
){.+.+}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:173
#3:
ffff88807af07198
(&dev->mutex
){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:900 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz.8.30/6433:
2 locks held by syz.7.29/6436:
1 lock held by syz.2.31/6438:
2 locks held by syz-executor/6456:
#0: ffff888028804918
(&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6457:
#0:
ffff8880313f3918
(
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1: ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6458:
#0: ffff8880313f6918
(
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6460:
#0: ffff88805b74c918
(&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1: ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6463:
#0:
ffff88807f71a918
(
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1: ffffffff8f68e5e8
(uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6464:
#0: ffff8880278f5118
(&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6468:
#0:
ffff88807b849918
(
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6469:
#0: ffff888033f32118
(
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6470:
#0:
ffff888032bdf118
(
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6472:
#0: ffff888058164918
(
&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6475:
#0: ffff88805e232118
(&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
2 locks held by syz-executor/6476:
#0:
ffff88805e235118
(&data->open_mutex
){+.+.}-{4:4}
, at: vhci_create_device+0x34/0x650 drivers/bluetooth/hci_vhci.c:478
#1:
ffffffff8f68e5e8
(
uevent_sock_mutex
){+.+.}-{4:4}
, at: uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
, at: kobject_uevent_net_broadcast+0x27e/0x560 lib/kobject_uevent.c:410
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xf95/0xfe0 kernel/hung_task.c:515
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Sending NMI from CPU 1 to CPUs 0:
yealink 3-1:36.0: urb_irq_callback - urb status -71
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:_prb_read_valid+0xa2e/0xa90 kernel/printk/printk_ringbuffer.c:-1
Code: d9 1e 00 31 c0 49 bc 00 00 00 00 00 fc ff df eb 19 e8 66 d9 1e 00 31 c0 eb 10 e8 5d d9 1e 00 31 c0 eb 07 e8 54 d9 1e 00 b0 01 <48> 8b 4c 24 40 48 c7 84 24 c0 00 00 00 0e 36 e0 45 4a c7 04 21 00
RSP: 0018:ffffc900000070c0 EFLAGS: 00000046
RAX: ffffffff81a21f01 RBX: 00000000002633d8 RCX: ffff888141ac9e80
RDX: 0000000000000100 RSI: 00000000002633d8 RDI: 0000000000000001
RBP: ffffc90000007240 R08: ffff888141ac9e80 R09: 0000000000000003
R10: 00000000ffffffff R11: 0000000000000100 R12: dffffc0000000000
R13: ffffffff8de59700 R14: 0000000000000002 R15: ffffc90000007250
FS: 0000000000000000(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f74be30e286 CR3: 000000000dd3a000 CR4: 0000000000350ef0
Call Trace:
prb_read_valid+0x3c/0x60 kernel/printk/printk_ringbuffer.c:2242
printk_get_next_message+0x15c/0x7b0 kernel/printk/printk.c:2999
console_emit_next_record kernel/printk/printk.c:3083 [inline]
console_flush_one_record kernel/printk/printk.c:3215 [inline]
console_flush_all+0x4fb/0xb00 kernel/printk/printk.c:3289
__console_flush_and_unlock kernel/printk/printk.c:3319 [inline]
console_unlock+0xbb/0x190 kernel/printk/printk.c:3359
vprintk_emit+0x47b/0x550 kernel/printk/printk.c:2426
dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4914