INFO: task syz-executor.0:3632 blocked for more than 143 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22496 pid: 3632 ppid: 1 flags:0x20000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
do_ip6t_get_ctl+0x152/0xa10 net/ipv6/netfilter/ip6_tables.c:1663
nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1495
tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4251
__sys_getsockopt+0x21f/0x5f0 net/socket.c:2220
__do_compat_sys_socketcall+0x513/0x660 net/compat.c:495
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6e89549
RSP: 002b:00000000f751a650 EFLAGS: 00000286 ORIG_RAX: 0000000000000066
RAX: ffffffffffffffda RBX: 000000000000000f RCX: 00000000f751a668
RDX: 00000000f751a6d8 RSI: 00000000f751a6d8 RDI: 00000000f751a72c
RBP: 00000000f6fc1a60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor.5:3646 blocked for more than 143 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23360 pid: 3646 ppid: 1 flags:0x20000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
do_ip6t_get_ctl+0x152/0xa10 net/ipv6/netfilter/ip6_tables.c:1663
nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1495
tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4251
__sys_getsockopt+0x21f/0x5f0 net/socket.c:2220
__do_compat_sys_socketcall+0x513/0x660 net/compat.c:495
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f31549
RSP: 002b:00000000f75c2650 EFLAGS: 00000286 ORIG_RAX: 0000000000000066
RAX: ffffffffffffffda RBX: 000000000000000f RCX: 00000000f75c2668
RDX: 00000000f75c26d8 RSI: 00000000f75c26d8 RDI: 00000000f75c272c
RBP: 00000000f7069a60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor.3:3648 blocked for more than 143 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23424 pid: 3648 ppid: 1 flags:0x20000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
do_ip6t_get_ctl+0x152/0xa10 net/ipv6/netfilter/ip6_tables.c:1663
nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1495
tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4251
__sys_getsockopt+0x21f/0x5f0 net/socket.c:2220
__do_compat_sys_socketcall+0x513/0x660 net/compat.c:495
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6eaa549
RSP: 002b:00000000f753b650 EFLAGS: 00000286 ORIG_RAX: 0000000000000066
RAX: ffffffffffffffda RBX: 000000000000000f RCX: 00000000f753b668
RDX: 00000000f753b6d8 RSI: 00000000f753b6d8 RDI: 00000000f753b72c
RBP: 00000000f6fe2a60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor.4:3720 blocked for more than 144 seconds.
Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23152 pid: 3720 ppid: 1 flags:0x20000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
do_ip6t_get_ctl+0x152/0xa10 net/ipv6/netfilter/ip6_tables.c:1663
nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x1be/0x270 net/ipv6/ipv6_sockglue.c:1495
tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4251
__sys_getsockopt+0x21f/0x5f0 net/socket.c:2220
__do_compat_sys_socketcall+0x513/0x660 net/compat.c:495
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6ec2549
RSP: 002b:00000000f7553650 EFLAGS: 00000286 ORIG_RAX: 0000000000000066
RAX: ffffffffffffffda RBX: 000000000000000f RCX: 00000000f7553668
RDX: 00000000f75536d8 RSI: 00000000f75536d8 RDI: 00000000f755372c
RBP: 00000000f6ffaa60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3286:
#0: ffff8880239a5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by syz-executor.0/3632:
#0: ffff88814a098e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
1 lock held by syz-executor.5/3646:
#0: ffff88814a098e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
1 lock held by syz-executor.1/3647:
#0: ffff88814a098e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: translate_compat_table+0x1b2/0x18d0 net/ipv6/netfilter/ip6_tables.c:1424
1 lock held by syz-executor.3/3648:
#0: ffff88814a098e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
1 lock held by syz-executor.2/3649:
#0: ffff88814a098e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
3 locks held by kworker/u4:5/3669:
1 lock held by syz-executor.4/3720:
#0: ffff88814a098e38 (&xt[i].compat_mutex){+.+.}-{3:3}, at: get_info+0x155/0x740 net/ipv6/netfilter/ip6_tables.c:979
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc7-syzkaller #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+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:553