INFO: task syz-executor334:11027 blocked for more than 143 seconds.
Not tainted 5.6.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor334 D28040 11027 11013 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3386 [inline]
__schedule+0x934/0x1f90 kernel/sched/core.c:4082
schedule+0xdc/0x2b0 kernel/sched/core.c:4156
schedule_timeout+0x717/0xc50 kernel/time/timer.c:1871
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common kernel/sched/completion.c:115 [inline]
wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136
__flush_work+0x4fe/0xa50 kernel/workqueue.c:3041
__cancel_work_timer+0x3d9/0x540 kernel/workqueue.c:3128
cancel_delayed_work_sync+0x1b/0x20 kernel/workqueue.c:3260
htable_destroy net/netfilter/xt_hashlimit.c:406 [inline]
htable_put+0x15f/0x220 net/netfilter/xt_hashlimit.c:435
hashlimit_mt_destroy+0x56/0x70 net/netfilter/xt_hashlimit.c:971
cleanup_match+0xde/0x170 net/ipv6/netfilter/ip6_tables.c:478
find_check_entry.isra.0+0x454/0x920 net/ipv4/netfilter/ip_tables.c:564
translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:717
do_replace net/ipv4/netfilter/ip_tables.c:1136 [inline]
do_ipt_set_ctl+0x2fe/0x4c2 net/ipv4/netfilter/ip_tables.c:1672
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline]
ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2640
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
__sys_setsockopt+0x261/0x4c0 net/socket.c:2130
__do_sys_setsockopt net/socket.c:2146 [inline]
__se_sys_setsockopt net/socket.c:2143 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441c69
Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c
RSP: 002b:00007fffb3323b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69
RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003
RBP: 0000000000054472 R08: 0000000000000418 R09: 00000000004002c8
R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0
R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor334:11030 blocked for more than 143 seconds.
Not tainted 5.6.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor334 D28072 11030 11011 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3386 [inline]
__schedule+0x934/0x1f90 kernel/sched/core.c:4082
schedule+0xdc/0x2b0 kernel/sched/core.c:4156
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4215
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
hashlimit_mt_check+0xa4/0xd0 net/netfilter/xt_hashlimit.c:949
xt_check_match+0x280/0x690 net/netfilter/x_tables.c:501
check_match net/ipv4/netfilter/ip_tables.c:472 [inline]
find_check_match net/ipv4/netfilter/ip_tables.c:488 [inline]
find_check_entry.isra.0+0x32f/0x920 net/ipv4/netfilter/ip_tables.c:538
translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:717
do_replace net/ipv4/netfilter/ip_tables.c:1136 [inline]
do_ipt_set_ctl+0x2fe/0x4c2 net/ipv4/netfilter/ip_tables.c:1672
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline]
ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2640
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
__sys_setsockopt+0x261/0x4c0 net/socket.c:2130
__do_sys_setsockopt net/socket.c:2146 [inline]
__se_sys_setsockopt net/socket.c:2143 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441c69
Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c
RSP: 002b:00007fffb3323b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69
RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003
RBP: 000000000005558f R08: 0000000000000418 R09: 00000000004002c8
R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0
R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor334:11031 blocked for more than 144 seconds.
Not tainted 5.6.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor334 D28072 11031 11014 0x00000004
Call Trace:
context_switch kernel/sched/core.c:3386 [inline]
__schedule+0x934/0x1f90 kernel/sched/core.c:4082
schedule+0xdc/0x2b0 kernel/sched/core.c:4156
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4215
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
hashlimit_mt_check+0xa4/0xd0 net/netfilter/xt_hashlimit.c:949
xt_check_match+0x280/0x690 net/netfilter/x_tables.c:501
check_match net/ipv4/netfilter/ip_tables.c:472 [inline]
find_check_match net/ipv4/netfilter/ip_tables.c:488 [inline]
find_check_entry.isra.0+0x32f/0x920 net/ipv4/netfilter/ip_tables.c:538
translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:717
do_replace net/ipv4/netfilter/ip_tables.c:1136 [inline]
do_ipt_set_ctl+0x2fe/0x4c2 net/ipv4/netfilter/ip_tables.c:1672
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline]
ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2640
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
__sys_setsockopt+0x261/0x4c0 net/socket.c:2130
__do_sys_setsockopt net/socket.c:2146 [inline]
__se_sys_setsockopt net/socket.c:2143 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441c69
Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c
RSP: 002b:00007fffb3323b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69
RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003
RBP: 0000000000055590 R08: 0000000000000418 R09: 00000000004002c8
R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0
R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor334:11032 blocked for more than 144 seconds.
Not tainted 5.6.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor334 D27928 11032 11015 0x00000004
Call Trace:
context_switch kernel/sched/core.c:3386 [inline]
__schedule+0x934/0x1f90 kernel/sched/core.c:4082
schedule+0xdc/0x2b0 kernel/sched/core.c:4156
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4215
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
hashlimit_mt_check+0xa4/0xd0 net/netfilter/xt_hashlimit.c:949
xt_check_match+0x280/0x690 net/netfilter/x_tables.c:501
check_match net/ipv4/netfilter/ip_tables.c:472 [inline]
find_check_match net/ipv4/netfilter/ip_tables.c:488 [inline]
find_check_entry.isra.0+0x32f/0x920 net/ipv4/netfilter/ip_tables.c:538
translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:717
do_replace net/ipv4/netfilter/ip_tables.c:1136 [inline]
do_ipt_set_ctl+0x2fe/0x4c2 net/ipv4/netfilter/ip_tables.c:1672
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline]
ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2640
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
__sys_setsockopt+0x261/0x4c0 net/socket.c:2130
__do_sys_setsockopt net/socket.c:2146 [inline]
__se_sys_setsockopt net/socket.c:2143 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441c69
Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c
RSP: 002b:00007fffb3323b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69
RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003
RBP: 0000000000055594 R08: 0000000000000418 R09: 00000000004002c8
R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0
R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor334:11033 blocked for more than 144 seconds.
Not tainted 5.6.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor334 D28072 11033 11016 0x00000004
Call Trace:
context_switch kernel/sched/core.c:3386 [inline]
__schedule+0x934/0x1f90 kernel/sched/core.c:4082
schedule+0xdc/0x2b0 kernel/sched/core.c:4156
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4215
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
hashlimit_mt_check+0xa4/0xd0 net/netfilter/xt_hashlimit.c:949
xt_check_match+0x280/0x690 net/netfilter/x_tables.c:501
check_match net/ipv4/netfilter/ip_tables.c:472 [inline]
find_check_match net/ipv4/netfilter/ip_tables.c:488 [inline]
find_check_entry.isra.0+0x32f/0x920 net/ipv4/netfilter/ip_tables.c:538
translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:717
do_replace net/ipv4/netfilter/ip_tables.c:1136 [inline]
do_ipt_set_ctl+0x2fe/0x4c2 net/ipv4/netfilter/ip_tables.c:1672
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline]
ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2640
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
__sys_setsockopt+0x261/0x4c0 net/socket.c:2130
__do_sys_setsockopt net/socket.c:2146 [inline]
__se_sys_setsockopt net/socket.c:2143 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441c69
Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c
RSP: 002b:00007fffb3323b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69
RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003
RBP: 00000000000555bf R08: 0000000000000418 R09: 00000000004002c8
R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0
R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor334:11034 blocked for more than 145 seconds.
Not tainted 5.6.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor334 D27968 11034 11012 0x00000004
Call Trace:
context_switch kernel/sched/core.c:3386 [inline]
__schedule+0x934/0x1f90 kernel/sched/core.c:4082
schedule+0xdc/0x2b0 kernel/sched/core.c:4156
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4215
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118
hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
hashlimit_mt_check+0xa4/0xd0 net/netfilter/xt_hashlimit.c:949
xt_check_match+0x280/0x690 net/netfilter/x_tables.c:501
check_match net/ipv4/netfilter/ip_tables.c:472 [inline]
find_check_match net/ipv4/netfilter/ip_tables.c:488 [inline]
find_check_entry.isra.0+0x32f/0x920 net/ipv4/netfilter/ip_tables.c:538
translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:717
do_replace net/ipv4/netfilter/ip_tables.c:1136 [inline]
do_ipt_set_ctl+0x2fe/0x4c2 net/ipv4/netfilter/ip_tables.c:1672
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline]
ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240
udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2640
sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149
__sys_setsockopt+0x261/0x4c0 net/socket.c:2130
__do_sys_setsockopt net/socket.c:2146 [inline]
__se_sys_setsockopt net/socket.c:2143 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441c69
Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c
RSP: 002b:00007fffb3323b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69
RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003
RBP: 00000000000555c4 R08: 0000000000000418 R09: 00000000004002c8
R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0
R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/1106:
#0: ffffffff89bac240 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 kernel/locking/lockdep.c:5333
2 locks held by kworker/1:48/2896:
1 lock held by rsyslogd/10858:
#0: ffff8880a4c986a0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:821
2 locks held by getty/10980:
#0: ffff88808e4c0090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90001aeb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156
2 locks held by getty/10981:
#0: ffff8880a9019090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90001b3b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156
2 locks held by getty/10982:
#0: ffff8880a7554090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90001b2b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156
2 locks held by getty/10983:
#0: ffff8880a8ba2090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90001b4b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156
2 locks held by getty/10984:
#0: ffff88808f781090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90001abb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156
2 locks held by getty/10985:
#0: ffff888094d93090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90001afb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156
2 locks held by getty/10986:
#0: ffff888091606090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340
#1: ffffc90001a8b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 drivers/tty/n_tty.c:2156
1 lock held by syz-executor334/11027:
#0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: htable_put+0x21/0x220 net/netfilter/xt_hashlimit.c:432
1 lock held by syz-executor334/11030:
#0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
1 lock held by syz-executor334/11031:
#0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
1 lock held by syz-executor334/11032:
#0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
1 lock held by syz-executor334/11033:
#0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
1 lock held by syz-executor334/11034:
#0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:889
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1106 Comm: khungtaskd Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x23b/0x28b 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:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
watchdog+0xb11/0x10c0 kernel/hung_task.c:289
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2896 Comm: kworker/1:48 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient htable_gc
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:163 [inline]
RIP: 0010:mark_lock+0xa9/0x1220 kernel/locking/lockdep.c:3642
Code: b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 8d 0e 00 00 41 0f b7 5d 20 66 81 e3 ff 1f 0f b7 db <be> 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 60 9b 51 8b e8 1e
RSP: 0018:ffffc900088dfb68 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 00000000000005b6 RCX: 0000000000000006
RDX: 1ffff11013dd6974 RSI: ffff88809eeb4b80 RDI: ffff88809eeb42c0
RBP: ffffc900088dfbb8 R08: 1ffffffff16a3373 R09: fffffbfff16a3374
R10: fffffbfff16a3373 R11: ffffffff8b519b9f R12: 0000000000000006
R13: ffff88809eeb4b80 R14: dffffc0000000000 R15: ffff88809eeb4b58
FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004c0308 CR3: 00000000a4735000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_held_locks+0xa4/0xf0 kernel/locking/lockdep.c:3359
__trace_hardirqs_on_caller kernel/locking/lockdep.c:3388 [inline]
lockdep_hardirqs_on+0x421/0x5e0 kernel/locking/lockdep.c:3433
trace_hardirqs_on+0x67/0x240 kernel/trace/trace_preemptirq.c:31
__local_bh_enable_ip+0x15a/0x270 kernel/softirq.c:194
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
_raw_spin_unlock_bh+0x2c/0x30 kernel/locking/spinlock.c:207
spin_unlock_bh include/linux/spinlock.h:383 [inline]
htable_selective_cleanup+0x232/0x340 net/netfilter/xt_hashlimit.c:373
htable_gc+0x21/0xb0 net/netfilter/xt_hashlimit.c:384
process_one_work+0xa05/0x17a0 kernel/workqueue.c:2264
worker_thread+0x98/0xe40 kernel/workqueue.c:2410
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352