INFO: task syz.4.2276:20303 blocked for more than 152 seconds.
Not tainted 6.12.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.2276 state:D stack:25824 pid:20303 tgid:20303 ppid:19169 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
tty_release_struct+0xad/0xe0 drivers/tty/tty_io.c:1700
tty_release+0xe25/0x1410 drivers/tty/tty_io.c:1861
__fput+0x3f6/0xb60 fs/file_table.c:431
task_work_run+0x14e/0x250 kernel/task_work.c:239
get_signal+0x1ca/0x2770 kernel/signal.c:2690
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc46637dff9
RSP: 002b:00007ffd62dd0b98 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fc466537a80 RCX: 00007fc46637dff9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc466537a80 R08: 0000000000000006 R09: 00007ffd62dd0e8f
R10: 00000000005d3ae8 R11: 0000000000000246 R12: 00000000001feb9a
R13: 00007ffd62dd0ca0 R14: 0000000000000032 R15: ffffffffffffffff
INFO: task syz.1.2285:20329 blocked for more than 152 seconds.
Not tainted 6.12.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2285 state:D stack:28624 pid:20329 tgid:20327 ppid:19298 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
tty_open_by_driver drivers/tty/tty_io.c:2046 [inline]
tty_open+0x53d/0xf80 drivers/tty/tty_io.c:2129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:958
vfs_open+0x82/0x3f0 fs/open.c:1088
dentry_open+0x71/0xd0 fs/open.c:1111
ptm_open_peer+0x1c0/0x290 drivers/tty/pty.c:626
tty_ioctl+0x12a6/0x15d0 drivers/tty/tty_io.c:2796
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb6d37dff9
RSP: 002b:00007fdb6e1a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdb6d536058 RCX: 00007fdb6d37dff9
RDX: 0000000000000000 RSI: 0000000000005441 RDI: 0000000000000003
RBP: 00007fdb6d3f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdb6d536058 R15: 00007fffca682dd8
INFO: task syz.1.2285:20330 blocked for more than 152 seconds.
Not tainted 6.12.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2285 state:D stack:28384 pid:20330 tgid:20327 ppid:19298 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
tty_open_by_driver drivers/tty/tty_io.c:2046 [inline]
tty_open+0x53d/0xf80 drivers/tty/tty_io.c:2129
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:958
vfs_open+0x82/0x3f0 fs/open.c:1088
do_open fs/namei.c:3774 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3933
do_filp_open+0x1dc/0x430 fs/namei.c:3960
do_sys_openat2+0x17a/0x1e0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_openat fs/open.c:1446 [inline]
__se_sys_openat fs/open.c:1441 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb6d37c990
RSP: 002b:00007fdb6e17ff00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdb6d37c990
RDX: 0000000000000000 RSI: 00007fdb6e17ffa0 RDI: 00000000ffffff9c
RBP: 00007fdb6e17ffa0 R08: 0000000000000000 R09: 00007fdb6e17fd17
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fdb6d536130 R15: 00007fffca682dd8
Showing all locks held in the system:
2 locks held by kthreadd/2:
3 locks held by kworker/u8:0/11:
4 locks held by kworker/u8:1/12:
1 lock held by khungtaskd/30:
#0: ffffffff8e1b8380 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1b8380 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1b8380 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:2/35:
4 locks held by kworker/1:1/46:
#0: ffff88801b081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90000b77d80 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8fee24a8 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x84/0x1130 net/wireless/reg.c:2480
#3: ffff888068128768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
#3: ffff888068128768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_leave_invalid_chans net/wireless/reg.c:2468 [inline]
#3: ffff888068128768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_check_chans_work+0x111/0x1130 net/wireless/reg.c:2483
3 locks held by kworker/u8:3/52:
3 locks held by kworker/u8:4/57:
3 locks held by kworker/u8:6/1911:
#0: ffff88802e662948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000464fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8fee24a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4736
2 locks held by syslogd/4655:
2 locks held by klogd/4662:
2 locks held by udevd/4673:
1 lock held by dhcpcd/4886:
1 lock held by dhcpcd/4887:
2 locks held by getty/4978:
#0: ffff8880321820a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
4 locks held by kworker/1:8/5329:
3 locks held by kworker/u8:9/5379:
3 locks held by kworker/u8:10/5381:
3 locks held by kworker/u8:12/5506:
3 locks held by kworker/u8:13/5507:
3 locks held by kworker/u8:15/8460:
6 locks held by kworker/u9:3/13204:
2 locks held by kworker/u8:8/13406:
4 locks held by kworker/1:0/16508:
5 locks held by kworker/u8:5/18132:
3 locks held by kworker/u8:14/18141:
3 locks held by kworker/u8:16/18142:
1 lock held by syz-executor/19836:
2 locks held by syz.4.2270/20280:
1 lock held by syz.4.2276/20303:
#0: ffffffff8ee69848 (tty_mutex){+.+.}-{3:3}, at: tty_release_struct+0xad/0xe0 drivers/tty/tty_io.c:1700
1 lock held by syz.4.2276/20304:
4 locks held by syz.0.2282/20316:
1 lock held by syz.1.2285/20327:
1 lock held by syz.1.2285/20329:
#0: ffffffff8ee69848 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2046 [inline]
#0: ffffffff8ee69848 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x53d/0xf80 drivers/tty/tty_io.c:2129
1 lock held by syz.1.2285/20330:
#0: ffffffff8ee69848 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2046 [inline]
#0: ffffffff8ee69848 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x53d/0xf80 drivers/tty/tty_io.c:2129
2 locks held by udevd/20333:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 20319 Comm: syz.4.2276 Not tainted 6.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x5a/0x70 kernel/kcov.c:223
Code: 35 8b 82 1c 16 00 00 85 c0 74 2b 8b 82 f8 15 00 00 83 f8 02 75 20 48 8b 8a 00 16 00 00 8b 92 fc 15 00 00 48 8b 01 48 83 c0 01 <48> 39 d0 73 07 48 89 01 48 89 34 c1 c3 cc cc cc cc 0f 1f 44 00 00
RSP: 0018:ffffc90002defcd0 EFLAGS: 00000016
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9001325f000
RDX: 0000000000040000 RSI: ffffffff81531a73 RDI: 0000000000000011
RBP: ffff88801cf95a00 R08: 0000000000000002 R09: fffffbfff2dc538a
R10: ffffffff96e29c57 R11: 0000000000000000 R12: 0000000000000011
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
FS: 00007fc465dbd6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000201e0030 CR3: 000000006957e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
send_signal_locked+0x413/0x800 kernel/signal.c:1246
do_send_sig_info kernel/signal.c:1299 [inline]
group_send_sig_info+0x2aa/0x300 kernel/signal.c:1449
bpf_send_signal_common+0x2e8/0x3a0 kernel/trace/bpf_trace.c:857
____bpf_send_signal kernel/trace/bpf_trace.c:862 [inline]
bpf_send_signal+0x19/0x30 kernel/trace/bpf_trace.c:860
bpf_prog_7ba5217f62dcd359+0x41/0x45
bpf_dispatcher_nop_func include/linux/bpf.h:1257 [inline]
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run include/linux/filter.h:708 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2318 [inline]
bpf_trace_run2+0x231/0x590 kernel/trace/bpf_trace.c:2359
trace_sys_enter include/trace/events/syscalls.h:18 [inline]
syscall_trace_enter+0x1b2/0x240 kernel/entry/common.c:61
syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline]
syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline]
do_syscall_64+0x1ee/0x250 arch/x86/entry/common.c:79
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc466319959
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007fc465dbcb40 EFLAGS: 00000246 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007fc466536138 RCX: 00007fc466319959
RDX: 00007fc465dbcb40 RSI: 00007fc465dbcc70 RDI: 0000000000000011
RBP: 00007fc466536130 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc46653613c
R13: 0000000000000000 R14: 00007ffd62dd0950 R15: 00007ffd62dd0a38