xt_CT: No such timeout policy "syz0" xt_CT: No such timeout policy "syz0" xt_CT: No such timeout policy "syz0" xt_CT: No such timeout policy "syz0" NOHZ: local_softirq_pending 08 INFO: task syz-executor.1:32603 blocked for more than 140 seconds. Not tainted 4.19.102-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28536 32603 32513 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 htable_put+0x21/0x220 net/netfilter/xt_hashlimit.c:440 hashlimit_mt_destroy+0x56/0x70 net/netfilter/xt_hashlimit.c:979 cleanup_match+0xde/0x170 net/ipv6/netfilter/ip6_tables.c:481 find_check_entry.isra.0+0x454/0x920 net/ipv4/netfilter/ip_tables.c:567 translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:720 do_replace net/ipv4/netfilter/ip_tables.c:1139 [inline] do_ipt_set_ctl+0x2ef/0x492 net/ipv4/netfilter/ip_tables.c:1675 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:1258 [inline] ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1238 udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2549 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3046 __sys_setsockopt+0x17a/0x280 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b399 Code: Bad RIP value. RSP: 002b:00007f10f9f91c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f10f9f926d4 RCX: 000000000045b399 RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000005 RBP: 000000000075c070 R08: 0000000000000400 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000a06 R14: 00000000004cb681 R15: 000000000075c07c INFO: task syz-executor.2:32601 blocked for more than 140 seconds. Not tainted 4.19.102-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28344 32601 32515 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 htable_put+0x21/0x220 net/netfilter/xt_hashlimit.c:440 hashlimit_mt_destroy+0x56/0x70 net/netfilter/xt_hashlimit.c:979 cleanup_match+0xde/0x170 net/ipv6/netfilter/ip6_tables.c:481 find_check_entry.isra.0+0x454/0x920 net/ipv4/netfilter/ip_tables.c:567 translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:720 do_replace net/ipv4/netfilter/ip_tables.c:1139 [inline] do_ipt_set_ctl+0x2ef/0x492 net/ipv4/netfilter/ip_tables.c:1675 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:1258 [inline] ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1238 udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2549 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3046 __sys_setsockopt+0x17a/0x280 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b399 Code: Bad RIP value. RSP: 002b:00007f4b16fffc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f4b170006d4 RCX: 000000000045b399 RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000400 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000a06 R14: 00000000004cb681 R15: 000000000075bf2c INFO: task syz-executor.2:32604 blocked for more than 140 seconds. Not tainted 4.19.102-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28888 32604 32515 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:897 hashlimit_mt_check+0xa4/0xd0 net/netfilter/xt_hashlimit.c:957 xt_check_match+0x280/0x690 net/netfilter/x_tables.c:506 check_match net/ipv4/netfilter/ip_tables.c:475 [inline] find_check_match net/ipv4/netfilter/ip_tables.c:491 [inline] find_check_entry.isra.0+0x32f/0x920 net/ipv4/netfilter/ip_tables.c:541 translate_table+0xcb4/0x17d0 net/ipv4/netfilter/ip_tables.c:720 do_replace net/ipv4/netfilter/ip_tables.c:1139 [inline] do_ipt_set_ctl+0x2ef/0x492 net/ipv4/netfilter/ip_tables.c:1675 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:1258 [inline] ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1238 udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2549 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3046 __sys_setsockopt+0x17a/0x280 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b399 Code: Bad RIP value. RSP: 002b:00007f4b16fbdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f4b16fbe6d4 RCX: 000000000045b399 RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000005 RBP: 000000000075c070 R08: 0000000000000400 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000a06 R14: 00000000004cb681 R15: 000000000075c07c Showing all locks held in the system: 1 lock held by khungtaskd/1080: #0: 0000000095dc4b6d (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4438 2 locks held by kworker/1:2/3883: 1 lock held by rsyslogd/7955: #0: 00000000a8b51acd (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:767 2 locks held by getty/8077: #0: 00000000f682c280 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 0000000008b307c0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8078: #0: 000000003c3593f0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000da8cc3b6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8079: #0: 00000000df21b5a5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000719b1ed4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8080: #0: 000000008ae5e98c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000007f4cef7c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8081: #0: 0000000010926822 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000002e1c8d53 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8082: #0: 00000000d6ed17bd (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000009c07c625 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/8083: #0: 00000000cc8ce5c6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000000d61c5a1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 1 lock held by syz-executor.5/32562: 1 lock held by syz-executor.1/32603: #0: 000000000ea82c4a (hashlimit_mutex){+.+.}, at: htable_put+0x21/0x220 net/netfilter/xt_hashlimit.c:440 1 lock held by syz-executor.2/32601: #0: 000000000ea82c4a (hashlimit_mutex){+.+.}, at: htable_put+0x21/0x220 net/netfilter/xt_hashlimit.c:440 1 lock held by syz-executor.2/32604: #0: 000000000ea82c4a (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 net/netfilter/xt_hashlimit.c:897 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1080 Comm: khungtaskd Not tainted 4.19.102-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+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 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:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8147 Comm: kworker/0:4 Not tainted 4.19.102-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient htable_gc RIP: 0010:separate_irq_context kernel/locking/lockdep.c:3054 [inline] RIP: 0010:__lock_acquire+0x7f8/0x49c0 kernel/locking/lockdep.c:3402 Code: 48 8b b4 24 88 00 00 00 48 8d 04 80 4c 8d 6c c6 d8 48 b8 00 00 00 00 00 fc ff df 49 8d 7d 21 48 89 fa 48 c1 ea 03 0f b6 04 02 <48> 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d9 2e 00 00 49 8d 7a 21 RSP: 0018:ffff88805236fa30 EFLAGS: 00000802 RAX: 0000000000000000 RBX: 0000000000000762 RCX: 1ffff110107011f6 RDX: 1ffff110107011f1 RSI: ffff888083808f40 RDI: ffff888083808f89 RBP: ffff88805236fc00 R08: 0000000000000000 R09: 0000000000000002 R10: ffff888083808f90 R11: 0000000000000762 R12: 31286e4da638efc7 R13: ffff888083808f68 R14: ffff8880838086c0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000045b36f CR3: 000000008b958000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x33/0x50 kernel/locking/spinlock.c:168 spin_lock_bh include/linux/spinlock.h:334 [inline] htable_selective_cleanup+0xa6/0x330 net/netfilter/xt_hashlimit.c:376 htable_gc+0x26/0xc0 net/netfilter/xt_hashlimit.c:392 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415