INFO: task klogd:4499 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00136-g1f719a2f3fa6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:klogd state:D stack:26152 pid:4499 tgid:4499 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
wait_for_unix_gc+0x192/0x200 net/unix/garbage.c:201
unix_dgram_sendmsg+0x10e/0x1d10 net/unix/af_unix.c:1924
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x47f/0x4e0 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2199
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fc810a2a9b5
RSP: 002b:00007ffdc1dc3008 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc810a2a9b5
RDX: 00000000000000f9 RSI: 00005648140c32f0 RDI: 0000000000000003
RBP: 00005648140bb2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007fc810bb8212 R14: 00007ffdc1dc3108 R15: 0000000000000000
INFO: task dhcpcd:4723 blocked for more than 144 seconds.
Not tainted 6.8.0-rc3-syzkaller-00136-g1f719a2f3fa6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:26384 pid:4723 tgid:4723 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
wait_for_unix_gc+0x192/0x200 net/unix/garbage.c:201
unix_dgram_sendmsg+0x10e/0x1d10 net/unix/af_unix.c:1924
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
sock_write_iter+0x50a/0x5c0 net/socket.c:1160
call_write_iter include/linux/fs.h:2085 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0x6de/0x1110 fs/read_write.c:590
ksys_write+0x1f8/0x260 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fb1f2c9bbf2
RSP: 002b:00007ffd10f052e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055f7c4bbee00 RCX: 00007fb1f2c9bbf2
RDX: 0000000000000046 RSI: 00007ffd10f05300 RDI: 0000000000000005
RBP: 00007ffd10f05300 R08: 0000000000000008 R09: 0000000000000035
R10: 0000000000000000 R11: 0000000000000246 R12: 000055f7c44b7efc
R13: 00007ffd10f05730 R14: 000055f7c4c52380 R15: 0000000000000001
INFO: task syz-executor.0:8825 blocked for more than 145 seconds.
Not tainted 6.8.0-rc3-syzkaller-00136-g1f719a2f3fa6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28896 pid:8825 tgid:8824 ppid:5102 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
wait_for_unix_gc+0x192/0x200 net/unix/garbage.c:201
unix_stream_sendmsg+0xf2/0x10b0 net/unix/af_unix.c:2200
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0xab5/0xc90 net/socket.c:2584
___sys_sendmsg+0x135/0x1e0 net/socket.c:2638
__sys_sendmsg+0x117/0x1f0 net/socket.c:2667
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f2ce967dda9
RSP: 002b:00007f2cea34a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2ce97abf80 RCX: 00007f2ce967dda9
RDX: 0000000000000000 RSI: 0000000020001580 RDI: 0000000000000003
RBP: 00007f2ce96ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2ce97abf80 R15: 00007ffcf073f328
INFO: task syz-executor.0:8831 blocked for more than 146 seconds.
Not tainted 6.8.0-rc3-syzkaller-00136-g1f719a2f3fa6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29120 pid:8831 tgid:8824 ppid:5102 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
wait_for_unix_gc+0x192/0x200 net/unix/garbage.c:201
unix_stream_sendmsg+0xf2/0x10b0 net/unix/af_unix.c:2200
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0xab5/0xc90 net/socket.c:2584
___sys_sendmsg+0x135/0x1e0 net/socket.c:2638
__sys_sendmsg+0x117/0x1f0 net/socket.c:2667
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f2ce967dda9
RSP: 002b:00007f2cea3080c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2ce97ac120 RCX: 00007f2ce967dda9
RDX: 0000000000000001 RSI: 0000000020001300 RDI: 0000000000000003
RBP: 00007f2ce96ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2ce97ac120 R15: 00007ffcf073f328
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:6/961:
2 locks held by getty/4812:
#0: ffff88802abf30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfca/0x1490 drivers/tty/n_tty.c:2201
2 locks held by kworker/0:6/5144:
#0: ffff888014c8e938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc900044afd80 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
3 locks held by kworker/0:7/5147:
#0: ffff88802a5bb938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc900044dfd80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffffffff8f2e3d68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x14c0 net/ipv6/addrconf.c:4129
1 lock held by syz-executor.2/8772:
3 locks held by syz-executor.3/9265:
#0: ffffffff8f2e3d68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f2e3d68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe10 net/core/rtnetlink.c:6612
#1: ffff88803ccad3e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x203/0x4e0 drivers/net/wireguard/device.c:50
#2: ffffffff8d7b89b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#2: ffffffff8d7b89b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x6b5/0x800 kernel/rcu/tree_exp.h:995
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc3-syzkaller-00136-g1f719a2f3fa6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8772 Comm: syz-executor.2 Not tainted 6.8.0-rc3-syzkaller-00136-g1f719a2f3fa6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2e/0x60 kernel/kcov.c:207
Code: 65 48 8b 14 25 40 c2 03 00 65 8b 05 b4 7c 78 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b <8b> 82 d8 15 00 00 83 f8 02 75 20 48 8b 8a e0 15 00 00 8b 92 dc 15
RSP: 0018:ffffc90004967b58 EFLAGS: 00000246
RAX: 0000000080000000 RBX: ffff88807d31d000 RCX: ffffc90003899000
RDX: ffff88802b71bb80 RSI: ffffffff89684843 RDI: ffff88807d31d770
RBP: ffffc90004967ca8 R08: 0000000000000001 R09: fffffbfff27a900c
R10: ffffffff93d48067 R11: ffffffff8ac30895 R12: ffff88807d31d000
R13: dffffc0000000000 R14: ffff88807d31d640 R15: 0000000000000001
FS: 00007f25b91ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f99e917c038 CR3: 00000000163d2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unix_gc+0x563/0x13b0 net/unix/garbage.c:319
unix_release_sock+0xa93/0xf80 net/unix/af_unix.c:683
unix_release+0x91/0xf0 net/unix/af_unix.c:1064
__sock_release+0xb0/0x270 net/socket.c:659
sock_close+0x1c/0x30 net/socket.c:1421
__fput+0x270/0xb80 fs/file_table.c:376
task_work_run+0x14f/0x250 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:108 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x281/0x2b0 kernel/entry/common.c:212
do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f25b9e7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f25b91ff0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f25b9fabf80 RCX: 00007f25b9e7dda9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f25b9eca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f25b9fabf80 R15: 00007ffd6fe49838