NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
INFO: task syz-executor.0:7339 blocked for more than 140 seconds.
Not tainted 4.14.170-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D24992 7339 1 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
get_info+0x116/0x560 net/ipv6/netfilter/ip6_tables.c:983
do_ipt_get_ctl+0x148/0x7e0 net/ipv4/netfilter/ip_tables.c:1698
nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
nf_getsockopt+0x6a/0xc0 net/netfilter/nf_sockopt.c:122
ip_getsockopt net/ipv4/ip_sockglue.c:1566 [inline]
ip_getsockopt+0x10d/0x150 net/ipv4/ip_sockglue.c:1551
tcp_getsockopt net/ipv4/tcp.c:3249 [inline]
tcp_getsockopt+0x84/0xd0 net/ipv4/tcp.c:3243
sock_common_getsockopt+0x94/0xd0 net/core/sock.c:2927
SYSC_getsockopt net/socket.c:1896 [inline]
SyS_getsockopt+0x126/0x1e0 net/socket.c:1878
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45deaa
RSP: 002b:00007ffda0c893c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffda0c893f0 RCX: 000000000045deaa
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000071de80 R08: 00007ffda0c893ec R09: 0000000000004000
R10: 00007ffda0c893f0 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000071bcc0
INFO: task syz-executor.3:7341 blocked for more than 140 seconds.
Not tainted 4.14.170-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3 D24992 7341 1 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
get_info+0x116/0x560 net/ipv6/netfilter/ip6_tables.c:983
do_ipt_get_ctl+0x148/0x7e0 net/ipv4/netfilter/ip_tables.c:1698
nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
nf_getsockopt+0x6a/0xc0 net/netfilter/nf_sockopt.c:122
ip_getsockopt net/ipv4/ip_sockglue.c:1566 [inline]
ip_getsockopt+0x10d/0x150 net/ipv4/ip_sockglue.c:1551
tcp_getsockopt net/ipv4/tcp.c:3249 [inline]
tcp_getsockopt+0x84/0xd0 net/ipv4/tcp.c:3243
sock_common_getsockopt+0x94/0xd0 net/core/sock.c:2927
SYSC_getsockopt net/socket.c:1896 [inline]
SyS_getsockopt+0x126/0x1e0 net/socket.c:1878
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45deaa
RSP: 002b:00007ffedd5f3428 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffedd5f3450 RCX: 000000000045deaa
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000071de80 R08: 00007ffedd5f344c R09: 0000000000004000
R10: 00007ffedd5f3450 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000071bcc0
INFO: task syz-executor.2:11577 blocked for more than 140 seconds.
Not tainted 4.14.170-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D25232 11577 1 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
get_info+0x116/0x560 net/ipv6/netfilter/ip6_tables.c:983
do_ipt_get_ctl+0x148/0x7e0 net/ipv4/netfilter/ip_tables.c:1698
nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
nf_getsockopt+0x6a/0xc0 net/netfilter/nf_sockopt.c:122
ip_getsockopt net/ipv4/ip_sockglue.c:1566 [inline]
ip_getsockopt+0x10d/0x150 net/ipv4/ip_sockglue.c:1551
tcp_getsockopt net/ipv4/tcp.c:3249 [inline]
tcp_getsockopt+0x84/0xd0 net/ipv4/tcp.c:3243
sock_common_getsockopt+0x94/0xd0 net/core/sock.c:2927
SYSC_getsockopt net/socket.c:1896 [inline]
SyS_getsockopt+0x126/0x1e0 net/socket.c:1878
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45deaa
RSP: 002b:00007fff7a059ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007fff7a059f10 RCX: 000000000045deaa
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000071de80 R08: 00007fff7a059f0c R09: 0000000000004000
R10: 00007fff7a059f10 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000071bcc0
INFO: task syz-executor.5:12123 blocked for more than 140 seconds.
Not tainted 4.14.170-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D28944 12123 10175 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
__do_replace+0xa2/0x5b0 net/ipv4/netfilter/ip_tables.c:1056
do_replace net/ipv4/netfilter/ip_tables.c:1142 [inline]
do_ipt_set_ctl+0x296/0x3ee net/ipv4/netfilter/ip_tables.c:1674
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1255 [inline]
ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2451
ipv6_setsockopt+0x9e/0x130 net/ipv6/ipv6_sockglue.c:920
tcp_setsockopt net/ipv4/tcp.c:2820 [inline]
tcp_setsockopt+0x84/0xd0 net/ipv4/tcp.c:2814
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:2968
SYSC_setsockopt net/socket.c:1865 [inline]
SyS_setsockopt+0x13c/0x210 net/socket.c:1844
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b399
RSP: 002b:00007fe455e70c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe455e716d4 RCX: 000000000045b399
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000020000580 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a06 R14: 00000000004cb681 R15: 000000000075bf2c
INFO: task syz-executor.4:12149 blocked for more than 140 seconds.
Not tainted 4.14.170-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D29344 12149 7340 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3384
schedule+0x92/0x1c0 kernel/sched/core.c:3428
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
xt_find_match+0x3e/0x1e0 net/netfilter/x_tables.c:186
xt_request_find_match net/netfilter/x_tables.c:216 [inline]
xt_request_find_match+0x74/0xe0 net/netfilter/x_tables.c:209
find_check_match net/ipv4/netfilter/ip_tables.c:495 [inline]
find_check_entry.isra.0+0x22b/0x920 net/ipv4/netfilter/ip_tables.c:551
translate_table+0xb3f/0x15a0 net/ipv4/netfilter/ip_tables.c:737
do_replace net/ipv4/netfilter/ip_tables.c:1138 [inline]
do_ipt_set_ctl+0x268/0x3ee net/ipv4/netfilter/ip_tables.c:1674
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1255 [inline]
ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2451
ipv6_setsockopt+0x9e/0x130 net/ipv6/ipv6_sockglue.c:920
tcp_setsockopt net/ipv4/tcp.c:2820 [inline]
tcp_setsockopt+0x84/0xd0 net/ipv4/tcp.c:2814
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:2968
SYSC_setsockopt net/socket.c:1865 [inline]
SyS_setsockopt+0x13c/0x210 net/socket.c:1844
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b399
RSP: 002b:00007fe1b3139c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe1b313a6d4 RCX: 000000000045b399
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000580 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a06 R14: 00000000004cb681 R15: 000000000075bfd4
Showing all locks held in the system:
1 lock held by khungtaskd/1057:
#0: (tasklist_lock){.+.+}, at: [<ffffffff81488cf8>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4544
2 locks held by getty/7298:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7299:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7300:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7301:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7302:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7303:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
2 locks held by getty/7304:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0 drivers/tty/n_tty.c:2156
1 lock held by syz-executor.0/7339:
#0: (&xt[i].mutex){+.+.}, at: [<ffffffff854cf62c>] xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
1 lock held by syz-executor.3/7341:
#0: (&xt[i].mutex){+.+.}, at: [<ffffffff854cf62c>] xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
1 lock held by syz-executor.2/11577:
#0: (&xt[i].mutex){+.+.}, at: [<ffffffff854cf62c>] xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
1 lock held by syz-executor.5/12123:
#0: (&xt[i].mutex){+.+.}, at: [<ffffffff854cf62c>] xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1092
1 lock held by syz-executor.4/12149:
#0: (&xt[i].mutex){+.+.}, at: [<ffffffff854ce37e>] xt_find_match+0x3e/0x1e0 net/netfilter/x_tables.c:186
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 4.14.170-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5e7/0xb90 kernel/hung_task.c:274
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7343 Comm: syz-executor.1 Not tainted 4.14.170-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88805f00c500 task.stack: ffff88805f010000
RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:774 [inline]
RIP: 0010:trace_softirqs_on+0x2a0/0x3c0 kernel/locking/lockdep.c:2989
RSP: 0018:ffff88805f017960 EFLAGS: 00000046
RAX: 1ffffffff0fe2ce0 RBX: ffffffff854fb684 RCX: 1ffffffff134f760
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88805f017978 R08: 0000000000000001 R09: 0000000000000002
R10: 0000000000000000 R11: ffff88805f00c500 R12: ffff88805f00c500
R13: ffff88805f00c500 R14: ffffc90016711000 R15: ffffffff854f9a60
FS: 0000000001109940(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c430164848 CR3: 000000005f000000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__local_bh_enable_ip+0x123/0x1a0 kernel/softirq.c:173
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
_raw_spin_unlock_bh+0x31/0x40 kernel/locking/spinlock.c:208
spin_unlock_bh include/linux/spinlock.h:362 [inline]
htable_selective_cleanup+0x204/0x300 net/netfilter/xt_hashlimit.c:381
htable_destroy net/netfilter/xt_hashlimit.c:416 [inline]
htable_put+0x164/0x210 net/netfilter/xt_hashlimit.c:443
hashlimit_mt_destroy_v1+0x50/0x70 net/netfilter/xt_hashlimit.c:971
cleanup_match+0xc2/0x140 net/ipv6/netfilter/ip6_tables.c:491
cleanup_entry+0xbf/0x230 net/ipv4/netfilter/ip_tables.c:658
__do_replace+0x3c5/0x5b0 net/ipv4/netfilter/ip_tables.c:1086
do_replace net/ipv4/netfilter/ip_tables.c:1142 [inline]
do_ipt_set_ctl+0x296/0x3ee net/ipv4/netfilter/ip_tables.c:1674
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1255 [inline]
ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1240
tcp_setsockopt net/ipv4/tcp.c:2820 [inline]
tcp_setsockopt+0x84/0xd0 net/ipv4/tcp.c:2814
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:2968
SYSC_setsockopt net/socket.c:1865 [inline]
SyS_setsockopt+0x13c/0x210 net/socket.c:1844
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45deca
RSP: 002b:00007ffc3cfedcf8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ffc3cfedd20 RCX: 000000000045deca
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000071de80 R08: 0000000000000240 R09: 0000000000004000
R10: 000000000071d160 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000071d100
Code: 00 c7 83 7c 08 00 00 00 00 00 00 5b 41 5c 41 5d 5d c3 48 c7 c0 00 67 f1 87 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 <0f> 85 ee 00 00 00 48 83 3d 72 f9 a8 06 00 0f 84 d4 00 00 00 9c