Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 795.410698][ T9867] xt_CT: You must specify a L4 protocol and not use inversions on it [ 936.484185][ T1127] INFO: task syz-executor844:9874 blocked for more than 143 seconds. [ 936.500717][ T1127] Not tainted 5.5.0-rc6-syzkaller #0 [ 936.507567][ T1127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 936.516483][ T1127] syz-executor844 D28296 9874 9869 0x00000004 [ 936.522914][ T1127] Call Trace: [ 936.526588][ T1127] __schedule+0x934/0x1f90 [ 936.531061][ T1127] ? __sched_text_start+0x8/0x8 [ 936.536238][ T1127] ? lock_downgrade+0x920/0x920 [ 936.541122][ T1127] ? rwlock_bug.part.0+0x90/0x90 [ 936.546309][ T1127] schedule+0xdc/0x2b0 [ 936.550403][ T1127] schedule_preempt_disabled+0x13/0x20 [ 936.556161][ T1127] __mutex_lock+0x7ab/0x13c0 [ 936.560850][ T1127] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 936.568532][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 936.573392][ T1127] ? pcpu_next_md_free_region+0x176/0x350 [ 936.579404][ T1127] ? pcpu_alloc+0x100c/0x1380 [ 936.584708][ T1127] ? mark_held_locks+0xf0/0xf0 [ 936.589488][ T1127] ? __mutex_lock+0x458/0x13c0 [ 936.594581][ T1127] mutex_lock_nested+0x16/0x20 [ 936.599378][ T1127] ? mutex_lock_nested+0x16/0x20 [ 936.604535][ T1127] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 936.610896][ T1127] hashlimit_mt_check_v1+0x325/0x3ab [ 936.616461][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 936.621939][ T1127] ? lock_downgrade+0x920/0x920 [ 936.627315][ T1127] ? xt_find_match+0xa6/0x280 [ 936.632094][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 936.637178][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 936.642657][ T1127] xt_check_match+0x280/0x690 [ 936.647581][ T1127] ? xt_check_target+0x690/0x690 [ 936.652543][ T1127] ? pcpu_alloc_area+0x820/0x820 [ 936.657757][ T1127] ? mutex_unlock+0xd/0x10 [ 936.662193][ T1127] ? xt_find_match+0x73/0x280 [ 936.667219][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 936.673561][ T1127] find_check_entry.isra.0+0x32f/0x920 [ 936.679605][ T1127] ? ipt_do_table+0x1b80/0x1b80 [ 936.684670][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 936.690001][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 936.696283][ T1127] ? kvfree+0x61/0x70 [ 936.700309][ T1127] translate_table+0xcb4/0x17d0 [ 936.705409][ T1127] ? compat_do_ipt_get_ctl+0x910/0x910 [ 936.710886][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 936.717805][ T1127] ? _copy_from_user+0x12c/0x1a0 [ 936.722791][ T1127] do_ipt_set_ctl+0x2fe/0x4c2 [ 936.727708][ T1127] ? compat_do_ipt_set_ctl+0x170/0x170 [ 936.733211][ T1127] ? mutex_unlock+0xd/0x10 [ 936.738085][ T1127] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 936.744357][ T1127] nf_setsockopt+0x77/0xd0 [ 936.748964][ T1127] ip_setsockopt+0xdf/0x100 [ 936.753545][ T1127] tcp_setsockopt+0x8f/0xe0 [ 936.758461][ T1127] sock_common_setsockopt+0x94/0xd0 [ 936.763791][ T1127] __sys_setsockopt+0x261/0x4c0 [ 936.768892][ T1127] ? sock_create_kern+0x50/0x50 [ 936.773816][ T1127] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 936.779665][ T1127] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 936.786320][ T1127] ? handle_mm_fault+0x4ab/0xa50 [ 936.791448][ T1127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 936.797180][ T1127] ? do_syscall_64+0x26/0x790 [ 936.801933][ T1127] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 936.808344][ T1127] ? do_syscall_64+0x26/0x790 [ 936.813298][ T1127] __x64_sys_setsockopt+0xbe/0x150 [ 936.818790][ T1127] do_syscall_64+0xfa/0x790 [ 936.823325][ T1127] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 936.830745][ T1127] RIP: 0033:0x441279 [ 936.835010][ T1127] Code: 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 69 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 <61> 6e 64 20 72 65 73 74 61 72 74 2e 20 41 73 20 61 20 6c 61 73 74 [ 936.856158][ T1127] RSP: 002b:00007ffc408a3cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 936.864901][ T1127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441279 [ 936.872878][ T1127] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 936.881134][ T1127] RBP: 00000000006cc018 R08: 0000000000000509 R09: 00000000004002c8 [ 936.889617][ T1127] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401ff0 [ 936.897844][ T1127] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 936.906069][ T1127] INFO: task syz-executor844:9875 blocked for more than 143 seconds. [ 936.914445][ T1127] Not tainted 5.5.0-rc6-syzkaller #0 [ 936.920346][ T1127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 936.929503][ T1127] syz-executor844 D27640 9875 9866 0x00000004 [ 936.936315][ T1127] Call Trace: [ 936.940115][ T1127] __schedule+0x934/0x1f90 [ 936.944786][ T1127] ? __sched_text_start+0x8/0x8 [ 936.949656][ T1127] ? lock_downgrade+0x920/0x920 [ 936.955876][ T1127] ? rwlock_bug.part.0+0x90/0x90 [ 936.960873][ T1127] schedule+0xdc/0x2b0 [ 936.965311][ T1127] schedule_preempt_disabled+0x13/0x20 [ 936.970831][ T1127] __mutex_lock+0x7ab/0x13c0 [ 936.975695][ T1127] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 936.982227][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 936.987267][ T1127] ? pcpu_next_md_free_region+0x176/0x350 [ 936.992996][ T1127] ? pcpu_alloc+0x100c/0x1380 [ 936.997933][ T1127] ? mark_held_locks+0xf0/0xf0 [ 937.002723][ T1127] ? __mutex_lock+0x458/0x13c0 [ 937.007848][ T1127] mutex_lock_nested+0x16/0x20 [ 937.012760][ T1127] ? mutex_lock_nested+0x16/0x20 [ 937.018417][ T1127] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 937.025110][ T1127] hashlimit_mt_check_v1+0x325/0x3ab [ 937.030616][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 937.036351][ T1127] ? lock_downgrade+0x920/0x920 [ 937.041228][ T1127] ? xt_find_match+0xa6/0x280 [ 937.046184][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 937.050974][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 937.056798][ T1127] xt_check_match+0x280/0x690 [ 937.061496][ T1127] ? xt_check_target+0x690/0x690 [ 937.066764][ T1127] ? pcpu_alloc_area+0x820/0x820 [ 937.071738][ T1127] ? mutex_unlock+0xd/0x10 [ 937.076460][ T1127] ? xt_find_match+0x73/0x280 [ 937.081177][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 937.088765][ T1127] find_check_entry.isra.0+0x32f/0x920 [ 937.094661][ T1127] ? ipt_do_table+0x1b80/0x1b80 [ 937.099534][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 937.105075][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 937.110125][ T1127] ? kvfree+0x61/0x70 [ 937.114372][ T1127] translate_table+0xcb4/0x17d0 [ 937.119293][ T1127] ? compat_do_ipt_get_ctl+0x910/0x910 [ 937.125219][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 937.131495][ T1127] ? _copy_from_user+0x12c/0x1a0 [ 937.136712][ T1127] do_ipt_set_ctl+0x2fe/0x4c2 [ 937.141421][ T1127] ? compat_do_ipt_set_ctl+0x170/0x170 [ 937.147141][ T1127] ? mutex_unlock+0xd/0x10 [ 937.151569][ T1127] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 937.157810][ T1127] nf_setsockopt+0x77/0xd0 [ 937.162265][ T1127] ip_setsockopt+0xdf/0x100 [ 937.167039][ T1127] tcp_setsockopt+0x8f/0xe0 [ 937.171568][ T1127] sock_common_setsockopt+0x94/0xd0 [ 937.177033][ T1127] __sys_setsockopt+0x261/0x4c0 [ 937.181919][ T1127] ? sock_create_kern+0x50/0x50 [ 937.187116][ T1127] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 937.192687][ T1127] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 937.199196][ T1127] ? handle_mm_fault+0x4ab/0xa50 [ 937.204348][ T1127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 937.209838][ T1127] ? do_syscall_64+0x26/0x790 [ 937.215786][ T1127] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 937.221907][ T1127] ? do_syscall_64+0x26/0x790 [ 937.226903][ T1127] __x64_sys_setsockopt+0xbe/0x150 [ 937.232084][ T1127] do_syscall_64+0xfa/0x790 [ 937.236948][ T1127] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 937.242854][ T1127] RIP: 0033:0x441279 [ 937.246974][ T1127] Code: 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 69 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 <61> 6e 64 20 72 65 73 74 61 72 74 2e 20 41 73 20 61 20 6c 61 73 74 [ 937.266816][ T1127] RSP: 002b:00007ffc408a3cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 937.275573][ T1127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441279 [ 937.283562][ T1127] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 937.291817][ T1127] RBP: 00000000006cc018 R08: 0000000000000509 R09: 00000000004002c8 [ 937.300147][ T1127] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401ff0 [ 937.308533][ T1127] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 937.316990][ T1127] INFO: task syz-executor844:9876 blocked for more than 144 seconds. [ 937.325286][ T1127] Not tainted 5.5.0-rc6-syzkaller #0 [ 937.331092][ T1127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 937.340029][ T1127] syz-executor844 D28296 9876 9868 0x00004004 [ 937.347599][ T1127] Call Trace: [ 937.350939][ T1127] __schedule+0x934/0x1f90 [ 937.359459][ T1127] ? __sched_text_start+0x8/0x8 [ 937.364485][ T1127] ? lock_downgrade+0x920/0x920 [ 937.369375][ T1127] ? rwlock_bug.part.0+0x90/0x90 [ 937.374591][ T1127] schedule+0xdc/0x2b0 [ 937.378794][ T1127] schedule_preempt_disabled+0x13/0x20 [ 937.384490][ T1127] __mutex_lock+0x7ab/0x13c0 [ 937.389108][ T1127] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 937.395991][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 937.400826][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 937.406355][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 937.411396][ T1127] ? mark_held_locks+0xf0/0xf0 [ 937.416358][ T1127] mutex_lock_nested+0x16/0x20 [ 937.421132][ T1127] ? mutex_lock_nested+0x16/0x20 [ 937.426302][ T1127] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 937.432652][ T1127] hashlimit_mt_check_v1+0x325/0x3ab [ 937.438198][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 937.443670][ T1127] ? lock_downgrade+0x920/0x920 [ 937.448804][ T1127] ? xt_find_match+0xa6/0x280 [ 937.453535][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 937.458544][ T1127] ? pcpu_alloc+0x6d7/0x1380 [ 937.463157][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 937.468849][ T1127] xt_check_match+0x280/0x690 [ 937.473553][ T1127] ? xt_check_target+0x690/0x690 [ 937.479668][ T1127] ? pcpu_alloc_area+0x820/0x820 [ 937.484785][ T1127] ? mutex_unlock+0xd/0x10 [ 937.489221][ T1127] ? xt_find_match+0x73/0x280 [ 937.494232][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 937.500495][ T1127] find_check_entry.isra.0+0x32f/0x920 [ 937.506403][ T1127] ? ipt_do_table+0x1b80/0x1b80 [ 937.511271][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 937.516980][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 937.522015][ T1127] ? kvfree+0x61/0x70 [ 937.526315][ T1127] translate_table+0xcb4/0x17d0 [ 937.531323][ T1127] ? compat_do_ipt_get_ctl+0x910/0x910 [ 937.537094][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 937.543399][ T1127] ? _copy_from_user+0x12c/0x1a0 [ 937.548715][ T1127] do_ipt_set_ctl+0x2fe/0x4c2 [ 937.553421][ T1127] ? compat_do_ipt_set_ctl+0x170/0x170 [ 937.559128][ T1127] ? mutex_unlock+0xd/0x10 [ 937.563558][ T1127] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 937.569741][ T1127] nf_setsockopt+0x77/0xd0 [ 937.574338][ T1127] ip_setsockopt+0xdf/0x100 [ 937.578850][ T1127] tcp_setsockopt+0x8f/0xe0 [ 937.583362][ T1127] sock_common_setsockopt+0x94/0xd0 [ 937.588953][ T1127] __sys_setsockopt+0x261/0x4c0 [ 937.593852][ T1127] ? sock_create_kern+0x50/0x50 [ 937.598988][ T1127] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 937.605695][ T1127] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 937.611966][ T1127] ? handle_mm_fault+0x4ab/0xa50 [ 937.617199][ T1127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 937.622713][ T1127] ? do_syscall_64+0x26/0x790 [ 937.627647][ T1127] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 937.633736][ T1127] ? do_syscall_64+0x26/0x790 [ 937.638649][ T1127] __x64_sys_setsockopt+0xbe/0x150 [ 937.643782][ T1127] do_syscall_64+0xfa/0x790 [ 937.648628][ T1127] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 937.654725][ T1127] RIP: 0033:0x441279 [ 937.658627][ T1127] Code: 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 69 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 <61> 6e 64 20 72 65 73 74 61 72 74 2e 20 41 73 20 61 20 6c 61 73 74 [ 937.678613][ T1127] RSP: 002b:00007ffc408a3cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 937.687580][ T1127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441279 [ 937.695786][ T1127] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 937.703774][ T1127] RBP: 00000000006cc018 R08: 0000000000000509 R09: 00000000004002c8 [ 937.712021][ T1127] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401ff0 [ 937.720236][ T1127] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 937.728637][ T1127] [ 937.728637][ T1127] Showing all locks held in the system: [ 937.737514][ T1127] 1 lock held by khungtaskd/1127: [ 937.742682][ T1127] #0: ffffffff899a3dc0 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 937.752504][ T1127] 3 locks held by rs:main Q:Reg/9749: [ 937.758214][ T1127] 1 lock held by rsyslogd/9751: [ 937.763198][ T1127] #0: ffff88809ef27e20 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 937.772094][ T1127] 2 locks held by getty/9841: [ 937.777101][ T1127] #0: ffff8880a7948090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 937.786282][ T1127] #1: ffffc9000185b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 937.796179][ T1127] 2 locks held by getty/9842: [ 937.800860][ T1127] #0: ffff8880a7634090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 937.810084][ T1127] #1: ffffc900018db2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 937.819930][ T1127] 2 locks held by getty/9843: [ 937.824886][ T1127] #0: ffff8880946c6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 937.833935][ T1127] #1: ffffc9000186b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 937.845681][ T1127] 2 locks held by getty/9844: [ 937.850467][ T1127] #0: ffff88809370e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 937.859674][ T1127] #1: ffffc900018eb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 937.870414][ T1127] 2 locks held by getty/9845: [ 937.875291][ T1127] #0: ffff8880983c3090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 937.884451][ T1127] #1: ffffc9000188b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 937.894341][ T1127] 2 locks held by getty/9846: [ 937.899012][ T1127] #0: ffff88808e689090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 937.908304][ T1127] #1: ffffc900018cb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 937.918121][ T1127] 2 locks held by getty/9847: [ 937.922794][ T1127] #0: ffff8880a0271090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 937.932004][ T1127] #1: ffffc9000182b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 937.942006][ T1127] 1 lock held by syz-executor844/9867: [ 937.947684][ T1127] 1 lock held by syz-executor844/9873: [ 937.953171][ T1127] #0: ffffffff8a5500c0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 937.964203][ T1127] 1 lock held by syz-executor844/9874: [ 937.969880][ T1127] #0: ffffffff8a5500c0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 937.980976][ T1127] 1 lock held by syz-executor844/9875: [ 937.986672][ T1127] #0: ffffffff8a5500c0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 937.998644][ T1127] 1 lock held by syz-executor844/9876: [ 938.004331][ T1127] #0: ffffffff8a5500c0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 938.015445][ T1127] 1 lock held by syz-executor844/9877: [ 938.020924][ T1127] #0: ffffffff8a5500c0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 938.031899][ T1127] [ 938.034359][ T1127] ============================================= [ 938.034359][ T1127] [ 938.042909][ T1127] NMI backtrace for cpu 1 [ 938.047323][ T1127] CPU: 1 PID: 1127 Comm: khungtaskd Not tainted 5.5.0-rc6-syzkaller #0 [ 938.055617][ T1127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 938.065681][ T1127] Call Trace: [ 938.069077][ T1127] dump_stack+0x197/0x210 [ 938.073554][ T1127] nmi_cpu_backtrace.cold+0x70/0xb2 [ 938.078822][ T1127] ? vprintk_func+0x86/0x189 [ 938.083567][ T1127] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 938.089240][ T1127] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 938.095250][ T1127] arch_trigger_cpumask_backtrace+0x14/0x20 [ 938.101161][ T1127] watchdog+0xb11/0x10c0 [ 938.105477][ T1127] kthread+0x361/0x430 [ 938.109575][ T1127] ? reset_hung_task_detector+0x30/0x30 [ 938.115218][ T1127] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 938.120959][ T1127] ret_from_fork+0x24/0x30 [ 938.125495][ T1127] Sending NMI from CPU 1 to CPUs 0: [ 938.131549][ C0] NMI backtrace for cpu 0 [ 938.131556][ C0] CPU: 0 PID: 9867 Comm: syz-executor844 Not tainted 5.5.0-rc6-syzkaller #0 [ 938.131563][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 938.131567][ C0] RIP: 0010:trace_softirqs_on+0x1eb/0x3e0 [ 938.131581][ C0] Code: 84 24 44 08 00 00 49 8d bc 24 7c 08 00 00 48 89 fa 48 c1 ea 03 8d 58 01 48 b8 00 00 00 00 00 fc ff df 41 89 9c 24 44 08 00 00 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 8e [ 938.131585][ C0] RSP: 0018:ffffc900020ef738 EFLAGS: 00000807 [ 938.131593][ C0] RAX: dffffc0000000000 RBX: 0000000033564b14 RCX: 1ffffffff16cc29c [ 938.131598][ C0] RDX: 1ffff110121c9577 RSI: 0000000000000000 RDI: ffff888090e4abbc [ 938.131604][ C0] RBP: ffffc900020ef750 R08: 0000000000000001 R09: fffff52001adb20a [ 938.131609][ C0] R10: fffff52001adb209 R11: ffffc9000d6d904b R12: ffff888090e4a340 [ 938.131614][ C0] R13: ffff888090e4a340 R14: ffffc9000d6d9000 R15: 000000000cc74a14 [ 938.131620][ C0] FS: 0000000001851880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 938.131625][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 938.131630][ C0] CR2: 00000000200002c0 CR3: 0000000092ee4000 CR4: 00000000001406f0 [ 938.131636][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 938.131641][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 938.131644][ C0] Call Trace: [ 938.131648][ C0] ? htable_selective_cleanup+0x219/0x330 [ 938.131652][ C0] __local_bh_enable_ip+0x1cf/0x270 [ 938.131655][ C0] _raw_spin_unlock_bh+0x2c/0x30 [ 938.131659][ C0] htable_selective_cleanup+0x219/0x330 [ 938.131663][ C0] ? esp_mt+0x410/0x410 [ 938.131666][ C0] htable_put+0x176/0x220 [ 938.131670][ C0] ? hashlimit_mt_destroy_v2+0x70/0x70 [ 938.131673][ C0] hashlimit_mt_destroy_v1+0x50/0x70 [ 938.131677][ C0] cleanup_match+0xde/0x170 [ 938.131680][ C0] ? icmp_checkentry+0xa0/0xa0 [ 938.131684][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 938.131688][ C0] find_check_entry.isra.0+0x454/0x920 [ 938.131692][ C0] ? ipt_do_table+0x1b80/0x1b80 [ 938.131696][ C0] ? lockdep_hardirqs_on+0x421/0x5e0 [ 938.131699][ C0] ? kvfree+0x61/0x70 [ 938.131702][ C0] translate_table+0xcb4/0x17d0 [ 938.131706][ C0] ? compat_do_ipt_get_ctl+0x910/0x910 [ 938.131710][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 938.131714][ C0] ? _copy_from_user+0x12c/0x1a0 [ 938.131717][ C0] do_ipt_set_ctl+0x2fe/0x4c2 [ 938.131721][ C0] ? compat_do_ipt_set_ctl+0x170/0x170 [ 938.131724][ C0] ? mutex_unlock+0xd/0x10 [ 938.131729][ C0] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 938.131732][ C0] nf_setsockopt+0x77/0xd0 [ 938.131735][ C0] ip_setsockopt+0xdf/0x100 [ 938.131738][ C0] tcp_setsockopt+0x8f/0xe0 [ 938.131742][ C0] sock_common_setsockopt+0x94/0xd0 [ 938.131745][ C0] __sys_setsockopt+0x261/0x4c0 [ 938.131749][ C0] ? sock_create_kern+0x50/0x50 [ 938.131754][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 938.131758][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 938.131762][ C0] ? handle_mm_fault+0x4ab/0xa50 [ 938.131765][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 938.131769][ C0] ? do_syscall_64+0x26/0x790 [ 938.131773][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 938.131776][ C0] ? do_syscall_64+0x26/0x790 [ 938.131780][ C0] __x64_sys_setsockopt+0xbe/0x150 [ 938.131783][ C0] do_syscall_64+0xfa/0x790 [ 938.131787][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 938.131790][ C0] RIP: 0033:0x441279 [ 938.131803][ C0] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 938.131807][ C0] RSP: 002b:00007ffc408a3cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 938.131816][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441279 [ 938.131821][ C0] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 938.131827][ C0] RBP: 00000000006cc018 R08: 0000000000000509 R09: 00000000004002c8 [ 938.131832][ C0] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401ff0 [ 938.131837][ C0] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 938.133702][ T1127] Kernel panic - not syncing: hung_task: blocked tasks [ 938.549868][ T1127] CPU: 1 PID: 1127 Comm: khungtaskd Not tainted 5.5.0-rc6-syzkaller #0 [ 938.558119][ T1127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 938.568257][ T1127] Call Trace: [ 938.571569][ T1127] dump_stack+0x197/0x210 [ 938.575975][ T1127] panic+0x2e3/0x75c [ 938.579899][ T1127] ? add_taint.cold+0x16/0x16 [ 938.584595][ T1127] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 938.590242][ T1127] ? ___preempt_schedule+0x16/0x18 [ 938.595395][ T1127] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 938.601696][ T1127] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 938.607881][ T1127] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 938.614066][ T1127] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 938.620232][ T1127] watchdog+0xb22/0x10c0 [ 938.624500][ T1127] kthread+0x361/0x430 [ 938.628575][ T1127] ? reset_hung_task_detector+0x30/0x30 [ 938.634123][ T1127] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 938.639846][ T1127] ret_from_fork+0x24/0x30 [ 938.646175][ T1127] Kernel Offset: disabled [ 938.650615][ T1127] Rebooting in 86400 seconds..