INFO: task dhcpcd:3180 blocked for more than 143 seconds.
Not tainted 5.18.0-syzkaller-11439-g8ab2afa23bd1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:23000 pid: 3180 ppid: 3179 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0xa00/0x4b30 kernel/sched/core.c:6431
schedule+0xd2/0x1f0 kernel/sched/core.c:6503
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6562
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
devinet_ioctl+0x1b3/0x1ca0 net/ipv4/devinet.c:1070
inet_ioctl+0x1e6/0x320 net/ipv4/af_inet.c:968
sock_do_ioctl+0xcc/0x230 net/socket.c:1169
sock_ioctl+0x2f1/0x640 net/socket.c:1286
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f69f27810e7
RSP: 002b:00007ffd2c41e6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f69f26936c8 RCX: 00007f69f27810e7
RDX: 00007ffd2c42e8b8 RSI: 0000000000008914 RDI: 000000000000000e
RBP: 00007ffd2c43ea68 R08: 00007ffd2c42e878 R09: 00007ffd2c42e828
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd2c42e8b8 R14: 0000000000000028 R15: 0000000000008914
INFO: task kworker/0:20:3977 blocked for more than 143 seconds.
Not tainted 5.18.0-syzkaller-11439-g8ab2afa23bd1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:20 state:D stack:24232 pid: 3977 ppid: 2 flags:0x00004000
Workqueue: events switchdev_deferred_process_work
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0xa00/0x4b30 kernel/sched/core.c:6431
schedule+0xd2/0x1f0 kernel/sched/core.c:6503
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6562
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
INFO: task kworker/1:1:25518 blocked for more than 143 seconds.
Not tainted 5.18.0-syzkaller-11439-g8ab2afa23bd1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1 state:D stack:25984 pid:25518 ppid: 2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0xa00/0x4b30 kernel/sched/core.c:6431
schedule+0xd2/0x1f0 kernel/sched/core.c:6503
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6562
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
linkwatch_event+0xb/0x60 net/core/link_watch.c:263
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
INFO: task syz-executor.2:8375 blocked for more than 143 seconds.
Not tainted 5.18.0-syzkaller-11439-g8ab2afa23bd1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26552 pid: 8375 ppid: 1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0xa00/0x4b30 kernel/sched/core.c:6431
schedule+0xd2/0x1f0 kernel/sched/core.c:6503
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6562
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
rtnl_lock net/core/rtnetlink.c:74 [inline]
rtnetlink_rcv_msg+0x3e5/0xc90 net/core/rtnetlink.c:6086
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:734
__sys_sendto+0x21a/0x320 net/socket.c:2119
__do_sys_sendto net/socket.c:2131 [inline]
__se_sys_sendto net/socket.c:2127 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2127
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fd54143becc
RSP: 002b:00007ffcf4efc830 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fd5424d4320 RCX: 00007fd54143becc
RDX: 0000000000000028 RSI: 00007fd5424d4370 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffcf4efc884 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fd5424d4370 R14: 0000000000000003 R15: 0000000000000000
Showing all locks held in the system:
2 locks held by pr/ttyS0/16:
1 lock held by khungtaskd/29:
#0: ffffffff8bd86be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
1 lock held by dhcpcd/3180:
#0: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1b3/0x1ca0 net/ipv4/devinet.c:1070
2 locks held by getty/3286:
#0: ffff888025d9d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
3 locks held by kworker/0:18/3975:
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90002e6fda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4620
3 locks held by kworker/0:20/3977:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc9000303fda8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75
3 locks held by kworker/1:1/25518:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90005387da8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:263
5 locks held by kworker/u4:35/25514:
#0: ffff888010dbd938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010dbd938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010dbd938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888010dbd938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888010dbd938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888010dbd938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc900053dfda8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d580050 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:556
#3: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x8e/0x590 net/core/dev.c:11314
#4: ffffffff8bd90da8 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x630 kernel/rcu/tree.c:4105
3 locks held by kworker/1:2/29454:
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888025772938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc9000a66fda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4620
1 lock held by syz-executor.2/8375:
#0: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
#0: ffffffff8d5936a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xc90 net/core/rtnetlink.c:6086
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 5.18.0-syzkaller-11439-g8ab2afa23bd1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc22/0xf90 kernel/hung_task.c:378
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16 Comm: pr/ttyS0 Not tainted 5.18.0-syzkaller-11439-g8ab2afa23bd1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:io_serial_in+0x83/0xa0 drivers/tty/serial/8250/8250_port.c:461
Code: 0b 1a fd 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 16 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 e8 d0 ca 66 fd eb a6 e8 f9 ca 66 fd eb e3
RSP: 0018:ffffc90000157b20 EFLAGS: 00000002
RAX: dffffc0000000020 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff8460794c RDI: ffffffff908ce3e0
RBP: ffffffff908ce3a0 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: fffffbfff2119cc7 R14: fffffbfff2119c7e R15: 0000000000000020
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0006093a8 CR3: 000000007fab1000 CR4: 0000000000350ee0
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:115 [inline]
wait_for_xmitr+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:2089
serial8250_console_write+0xa64/0xc30 drivers/tty/serial/8250/8250_port.c:3388
call_console_driver kernel/printk/printk.c:2075 [inline]
__console_emit_next_record+0x896/0xa60 kernel/printk/printk.c:2916
console_emit_next_record kernel/printk/printk.c:3721 [inline]
printk_kthread_func.cold+0x702/0x73d kernel/printk/printk.c:3837
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
----------------
Code disassembly (best guess):
0: 0b 1a or (%rdx),%ebx
2: fd std
3: 48 8d 7d 40 lea 0x40(%rbp),%rdi
7: 44 89 e1 mov %r12d,%ecx
a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
11: fc ff df
14: 48 89 fa mov %rdi,%rdx
17: d3 e3 shl %cl,%ebx
19: 48 c1 ea 03 shr $0x3,%rdx
1d: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
21: 75 16 jne 0x39
23: 66 03 5d 40 add 0x40(%rbp),%bx
27: 89 da mov %ebx,%edx
29: ec in (%dx),%al
* 2a: 5b pop %rbx <-- trapping instruction
2b: 0f b6 c0 movzbl %al,%eax
2e: 5d pop %rbp
2f: 41 5c pop %r12
31: c3 retq
32: e8 d0 ca 66 fd callq 0xfd66cb07
37: eb a6 jmp 0xffffffdf
39: e8 f9 ca 66 fd callq 0xfd66cb37
3e: eb e3 jmp 0x23