[....] Starting enhanced syslogd: rsyslogd[ 16.609279] audit: type=1400 audit(1519168768.477:5): avc: denied { syslog } for pid=4014 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.763699] audit: type=1400 audit(1519168770.631:6): avc: denied { map } for pid=4150 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 25.064990] audit: type=1400 audit(1519168776.932:7): avc: denied { map } for pid=4164 comm="syzkaller659137" path="/root/syzkaller659137685" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 25.098455] ================================================================== [ 25.106876] BUG: KASAN: stack-out-of-bounds in update_stack_state+0x6ea/0x700 [ 25.114130] Read of size 8 at addr ffff8801a9e57198 by task syzkaller659137/4164 [ 25.121637] [ 25.123251] CPU: 0 PID: 4164 Comm: syzkaller659137 Not tainted 4.16.0-rc1+ #14 [ 25.130587] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.139919] Call Trace: [ 25.142486] dump_stack+0x194/0x257 [ 25.146106] ? arch_local_irq_restore+0x53/0x53 [ 25.150755] ? show_regs_print_info+0x18/0x18 [ 25.155254] ? update_stack_state+0x6ea/0x700 [ 25.159734] print_address_description+0x73/0x250 [ 25.164560] ? update_stack_state+0x6ea/0x700 [ 25.169040] kasan_report+0x23b/0x360 [ 25.172836] __asan_report_load8_noabort+0x14/0x20 [ 25.177745] update_stack_state+0x6ea/0x700 [ 25.182072] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 25.187945] ? check_noncircular+0x20/0x20 [ 25.192159] ? find_held_lock+0x35/0x1d0 [ 25.196245] __unwind_start+0xfd/0x330 [ 25.200119] ? check_noncircular+0x20/0x20 [ 25.204349] perf_callchain_kernel+0x2fb/0x610 [ 25.208936] ? arch_perf_update_userpage+0x4c0/0x4c0 [ 25.214075] get_perf_callchain+0x48f/0xa50 [ 25.218398] ? put_callchain_buffers+0x110/0x110 [ 25.223152] ? kvm_sched_clock_read+0x25/0x40 [ 25.227629] ? sched_clock+0x31/0x40 [ 25.231324] ? sched_clock_cpu+0x1b/0x180 [ 25.235474] ? local_clock+0x15/0x20 [ 25.239169] ? __perf_event_header__init_id+0x2ee/0x440 [ 25.244529] perf_prepare_sample+0x118b/0x16f0 [ 25.249119] ? perf_output_sample+0x1a50/0x1a50 [ 25.253767] ? trace_event_raw_event_lock+0x340/0x340 [ 25.258948] ? lock_release+0xa40/0xa40 [ 25.262917] ? check_noncircular+0x20/0x20 [ 25.267139] ? rcutorture_record_progress+0x10/0x10 [ 25.272143] ? put_prev_task_fair+0x80/0x80 [ 25.276465] perf_event_output_forward+0xef/0x260 [ 25.281297] ? perf_prepare_sample+0x16f0/0x16f0 [ 25.286036] ? __lock_acquire+0x664/0x3e00 [ 25.290261] ? print_irqtrace_events+0x270/0x270 [ 25.295022] ? perf_trace_run_bpf_submit+0x206/0x330 [ 25.300125] __perf_event_overflow+0x207/0x490 [ 25.304705] ? __perf_event_account_interrupt+0x240/0x240 [ 25.310227] ? __lock_acquire+0x664/0x3e00 [ 25.314460] ? perf_prepare_sample+0x16f0/0x16f0 [ 25.319203] ? check_noncircular+0x20/0x20 [ 25.323422] ? lock_acquire+0x1d5/0x580 [ 25.327402] perf_swevent_overflow+0x20c/0x2c0 [ 25.331983] ? __perf_event_overflow+0x490/0x490 [ 25.336726] ? __lock_is_held+0xb6/0x140 [ 25.340791] perf_swevent_event+0x10e/0x270 [ 25.345105] ___perf_sw_event+0x491/0x6d0 [ 25.349261] ? perf_swevent_put_recursion_context+0x60/0x60 [ 25.354974] ? put_prev_entity+0xc2/0x2a0 [ 25.359114] ? pick_next_task_fair+0xc14/0x16b0 [ 25.363776] ? rcu_pm_notify+0xc0/0xc0 [ 25.367712] ? check_noncircular+0x20/0x20 [ 25.371932] ? check_noncircular+0x20/0x20 [ 25.376145] ? __schedule+0x24e/0x2040 [ 25.380020] ? check_noncircular+0x20/0x20 [ 25.384254] ? lock_release+0xa40/0xa40 [ 25.388238] ? __lock_is_held+0xb6/0x140 [ 25.392312] __schedule+0xd53/0x2040 [ 25.396005] ? __schedule+0xd53/0x2040 [ 25.399899] ? __sched_text_start+0x8/0x8 [ 25.404042] ? __sb_end_write+0xa0/0xd0 [ 25.408002] ? pipe_write+0x5d8/0xd60 [ 25.411820] ? __vfs_write+0xf7/0x970 [ 25.415619] ? kernel_read+0x120/0x120 [ 25.419488] ? bpf_fd_pass+0x280/0x280 [ 25.423379] schedule+0xf5/0x430 [ 25.426737] ? __schedule+0x2040/0x2040 [ 25.430704] ? fsnotify_first_mark+0x2b0/0x2b0 [ 25.435286] ? rw_verify_area+0xe5/0x2b0 [ 25.439340] ? exit_to_usermode_loop+0x8c/0x2f0 [ 25.444015] exit_to_usermode_loop+0x1d1/0x2f0 [ 25.448588] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 25.454113] ? do_syscall_64+0xb7/0x940 [ 25.458093] do_syscall_64+0x6ed/0x940 [ 25.461962] ? __do_page_fault+0xc90/0xc90 [ 25.466182] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.470925] ? syscall_return_slowpath+0x550/0x550 [ 25.475841] ? syscall_return_slowpath+0x2ac/0x550 [ 25.480756] ? prepare_exit_to_usermode+0x350/0x350 [ 25.485762] ? entry_SYSCALL_64_after_hwframe+0x36/0x9b [ 25.491127] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.495975] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 25.501147] RIP: 0033:0x43fe99 [ 25.504319] RSP: 002b:00007ffed9993ee8 EFLAGS: 00000203 ORIG_RAX: 0000000000000001 [ 25.512013] RAX: 0000000000000012 RBX: 00000000ffffffff RCX: 000000000043fe99 [ 25.519264] RDX: 0000000000000012 RSI: 00000000004a1184 RDI: 0000000000000001 [ 25.526514] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 25.533763] R10: 0000000000000000 R11: 0000000000000203 R12: 00000000004017c0 [ 25.541011] R13: 0000000000401850 R14: 0000000000000000 R15: 0000000000000000 [ 25.548317] [ 25.549925] The buggy address belongs to the page: [ 25.554832] page:ffffea0006a795c0 count:0 mapcount:0 mapping: (null) index:0x0 [ 25.562955] flags: 0x2fffc0000000000() [ 25.566825] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 25.574688] raw: 0000000000000000 ffffea0006a70101 0000000000000000 0000000000000000 [ 25.582544] page dumped because: kasan: bad access detected [ 25.588231] [ 25.589837] Memory state around the buggy address: [ 25.594742] ffff8801a9e57080: 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00 00 00 00 [ 25.602080] ffff8801a9e57100: f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 [ 25.609417] >ffff8801a9e57180: 00 00 f1 f1 f1 f1 04 f2 f2 f2 f2 f2 f2 f2 f8 f2 [ 25.616751] ^ [ 25.620879] ffff8801a9e57200: f2 f2 f2 f2 f2 f2 00 00 00 f2 f3 f3 f3 f3 00 00 [ 25.628219] ffff8801a9e57280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 [ 25.635555] ================================================================== [ 25.642891] Kernel panic - not syncing: panic_on_warn set ... [ 25.642891] [ 25.650232] CPU: 0 PID: 4164 Comm: syzkaller659137 Tainted: G B 4.16.0-rc1+ #14 [ 25.658868] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.668215] Call Trace: [ 25.670794] dump_stack+0x194/0x257 [ 25.674414] ? arch_local_irq_restore+0x53/0x53 [ 25.679063] ? kasan_end_report+0x32/0x50 [ 25.683198] ? lock_downgrade+0x980/0x980 [ 25.687336] ? vsnprintf+0x1ed/0x1900 [ 25.691125] ? update_stack_state+0x650/0x700 [ 25.695609] panic+0x1e4/0x41c [ 25.698785] ? refcount_error_report+0x214/0x214 [ 25.703540] ? print_shadow_for_address+0xdc/0x1a0 [ 25.708469] ? update_stack_state+0x6ea/0x700 [ 25.712946] kasan_end_report+0x50/0x50 [ 25.716903] kasan_report+0x148/0x360 [ 25.720698] __asan_report_load8_noabort+0x14/0x20 [ 25.725608] update_stack_state+0x6ea/0x700 [ 25.729932] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 25.735804] ? check_noncircular+0x20/0x20 [ 25.740021] ? find_held_lock+0x35/0x1d0 [ 25.744101] __unwind_start+0xfd/0x330 [ 25.747973] ? check_noncircular+0x20/0x20 [ 25.752206] perf_callchain_kernel+0x2fb/0x610 [ 25.756792] ? arch_perf_update_userpage+0x4c0/0x4c0 [ 25.761932] get_perf_callchain+0x48f/0xa50 [ 25.766251] ? put_callchain_buffers+0x110/0x110 [ 25.771006] ? kvm_sched_clock_read+0x25/0x40 [ 25.775483] ? sched_clock+0x31/0x40 [ 25.779176] ? sched_clock_cpu+0x1b/0x180 [ 25.783333] ? local_clock+0x15/0x20 [ 25.787030] ? __perf_event_header__init_id+0x2ee/0x440 [ 25.792390] perf_prepare_sample+0x118b/0x16f0 [ 25.796981] ? perf_output_sample+0x1a50/0x1a50 [ 25.801631] ? trace_event_raw_event_lock+0x340/0x340 [ 25.806811] ? lock_release+0xa40/0xa40 [ 25.810778] ? check_noncircular+0x20/0x20 [ 25.815003] ? rcutorture_record_progress+0x10/0x10 [ 25.820009] ? put_prev_task_fair+0x80/0x80 [ 25.824331] perf_event_output_forward+0xef/0x260 [ 25.829158] ? perf_prepare_sample+0x16f0/0x16f0 [ 25.833897] ? __lock_acquire+0x664/0x3e00 [ 25.838118] ? print_irqtrace_events+0x270/0x270 [ 25.842880] ? perf_trace_run_bpf_submit+0x206/0x330 [ 25.847981] __perf_event_overflow+0x207/0x490 [ 25.852560] ? __perf_event_account_interrupt+0x240/0x240 [ 25.858083] ? __lock_acquire+0x664/0x3e00 [ 25.862311] ? perf_prepare_sample+0x16f0/0x16f0 [ 25.867053] ? check_noncircular+0x20/0x20 [ 25.871270] ? lock_acquire+0x1d5/0x580 [ 25.875241] perf_swevent_overflow+0x20c/0x2c0 [ 25.879825] ? __perf_event_overflow+0x490/0x490 [ 25.884567] ? __lock_is_held+0xb6/0x140 [ 25.888634] perf_swevent_event+0x10e/0x270 [ 25.892948] ___perf_sw_event+0x491/0x6d0 [ 25.897100] ? perf_swevent_put_recursion_context+0x60/0x60 [ 25.902814] ? put_prev_entity+0xc2/0x2a0 [ 25.906955] ? pick_next_task_fair+0xc14/0x16b0 [ 25.911637] ? rcu_pm_notify+0xc0/0xc0 [ 25.915571] ? check_noncircular+0x20/0x20 [ 25.919791] ? check_noncircular+0x20/0x20 [ 25.924004] ? __schedule+0x24e/0x2040 [ 25.927879] ? check_noncircular+0x20/0x20 [ 25.932108] ? lock_release+0xa40/0xa40 [ 25.936088] ? __lock_is_held+0xb6/0x140 [ 25.940160] __schedule+0xd53/0x2040 [ 25.943854] ? __schedule+0xd53/0x2040 [ 25.947748] ? __sched_text_start+0x8/0x8 [ 25.951890] ? __sb_end_write+0xa0/0xd0 [ 25.955851] ? pipe_write+0x5d8/0xd60 [ 25.959671] ? __vfs_write+0xf7/0x970 [ 25.963471] ? kernel_read+0x120/0x120 [ 25.967338] ? bpf_fd_pass+0x280/0x280 [ 25.971230] schedule+0xf5/0x430 [ 25.974587] ? __schedule+0x2040/0x2040 [ 25.978554] ? fsnotify_first_mark+0x2b0/0x2b0 [ 25.983132] ? rw_verify_area+0xe5/0x2b0 [ 25.987193] ? exit_to_usermode_loop+0x8c/0x2f0 [ 25.991866] exit_to_usermode_loop+0x1d1/0x2f0 [ 25.996440] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 26.001966] ? do_syscall_64+0xb7/0x940 [ 26.005944] do_syscall_64+0x6ed/0x940 [ 26.009812] ? __do_page_fault+0xc90/0xc90 [ 26.014030] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.018775] ? syscall_return_slowpath+0x550/0x550 [ 26.023692] ? syscall_return_slowpath+0x2ac/0x550 [ 26.028607] ? prepare_exit_to_usermode+0x350/0x350 [ 26.033612] ? entry_SYSCALL_64_after_hwframe+0x36/0x9b [ 26.038976] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.043825] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 26.048995] RIP: 0033:0x43fe99 [ 26.052163] RSP: 002b:00007ffed9993ee8 EFLAGS: 00000203 ORIG_RAX: 0000000000000001 [ 26.059859] RAX: 0000000000000012 RBX: 00000000ffffffff RCX: 000000000043fe99 [ 26.067107] RDX: 0000000000000012 RSI: 00000000004a1184 RDI: 0000000000000001 [ 26.074358] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 26.081610] R10: 0000000000000000 R11: 0000000000000203 R12: 00000000004017c0 [ 26.088858] R13: 0000000000401850 R14: 0000000000000000 R15: 0000000000000000 [ 26.096162] [ 26.096166] ====================================================== [ 26.096169] WARNING: possible circular locking dependency detected [ 26.096171] 4.16.0-rc1+ #14 Not tainted [ 26.096177] ------------------------------------------------------ [ 26.096180] syzkaller659137/4164 is trying to acquire lock: [ 26.096182] ((console_sem).lock){..-.}, at: [<00000000287bdebf>] down_trylock+0x13/0x70 [ 26.096190] [ 26.096192] but task is already holding lock: [ 26.096193] (report_lock){....}, at: [<0000000072cb23fc>] kasan_report+0x6b/0x360 [ 26.096201] [ 26.096204] which lock already depends on the new lock. [ 26.096205] [ 26.096207] [ 26.096210] the existing dependency chain (in reverse order) is: [ 26.096212] [ 26.096213] -> #3 (report_lock){....}: [ 26.096222] _raw_spin_lock_irqsave+0x96/0xc0 [ 26.096225] kasan_report+0x6b/0x360 [ 26.096227] __asan_report_load8_noabort+0x14/0x20 [ 26.096230] update_stack_state+0x6ea/0x700 [ 26.096232] __unwind_start+0xfd/0x330 [ 26.096235] perf_callchain_kernel+0x2fb/0x610 [ 26.096237] get_perf_callchain+0x48f/0xa50 [ 26.096240] perf_prepare_sample+0x118b/0x16f0 [ 26.096242] perf_event_output_forward+0xef/0x260 [ 26.096245] __perf_event_overflow+0x207/0x490 [ 26.096247] perf_swevent_overflow+0x20c/0x2c0 [ 26.096250] perf_swevent_event+0x10e/0x270 [ 26.096252] ___perf_sw_event+0x491/0x6d0 [ 26.096254] __schedule+0xd53/0x2040 [ 26.096257] schedule+0xf5/0x430 [ 26.096259] exit_to_usermode_loop+0x1d1/0x2f0 [ 26.096261] do_syscall_64+0x6ed/0x940 [ 26.096264] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 26.096266] [ 26.096267] -> #2 (&rq->lock){-.-.}: [ 26.096276] _raw_spin_lock+0x2a/0x40 [ 26.096278] task_fork_fair+0x7a/0x690 [ 26.096280] sched_fork+0x450/0xc10 [ 26.096283] copy_process.part.37+0x1758/0x4b60 [ 26.096285] _do_fork+0x1f7/0xf70 [ 26.096287] kernel_thread+0x34/0x40 [ 26.096289] rest_init+0x22/0xf0 [ 26.096291] start_kernel+0x7f1/0x819 [ 26.096294] x86_64_start_reservations+0x2a/0x2c [ 26.096296] x86_64_start_kernel+0x77/0x7a [ 26.096299] secondary_startup_64+0xa5/0xb0 [ 26.096300] [ 26.096302] -> #1 (&p->pi_lock){-.-.}: [ 26.096310] _raw_spin_lock_irqsave+0x96/0xc0 [ 26.096313] try_to_wake_up+0xbc/0x15f0 [ 26.096315] wake_up_process+0x10/0x20 [ 26.096317] __up.isra.0+0x1cc/0x2c0 [ 26.096319] up+0x13b/0x1d0 [ 26.096322] __up_console_sem+0xb2/0x1a0 [ 26.096324] console_unlock+0x5af/0xfb0 [ 26.096326] vprintk_emit+0x5c3/0xb90 [ 26.096328] vprintk_default+0x28/0x30 [ 26.096331] vprintk_func+0x57/0xc0 [ 26.096333] printk+0xaa/0xca [ 26.096335] kauditd_hold_skb+0x163/0x180 [ 26.096337] kauditd_send_queue+0xfa/0x140 [ 26.096340] kauditd_thread+0x660/0x940 [ 26.096342] kthread+0x33c/0x400 [ 26.096344] ret_from_fork+0x3a/0x50 [ 26.096346] [ 26.096347] -> #0 ((console_sem).lock){..-.}: [ 26.096356] lock_acquire+0x1d5/0x580 [ 26.096359] _raw_spin_lock_irqsave+0x96/0xc0 [ 26.096361] down_trylock+0x13/0x70 [ 26.096363] __down_trylock_console_sem+0xa2/0x1e0 [ 26.096366] console_trylock+0x15/0x70 [ 26.096368] vprintk_emit+0x5b5/0xb90 [ 26.096370] vprintk_default+0x28/0x30 [ 26.096373] vprintk_func+0x57/0xc0 [ 26.096375] printk+0xaa/0xca [ 26.096377] kasan_report+0x7b/0x360 [ 26.096380] __asan_report_load8_noabort+0x14/0x20 [ 26.096382] update_stack_state+0x6ea/0x700 [ 26.096384] __unwind_start+0xfd/0x330 [ 26.096387] perf_callchain_kernel+0x2fb/0x610 [ 26.096389] get_perf_callchain+0x48f/0xa50 [ 26.096392] perf_prepare_sample+0x118b/0x16f0 [ 26.096394] perf_event_output_forward+0xef/0x260 [ 26.096397] __perf_event_overflow+0x207/0x490 [ 26.096399] perf_swevent_overflow+0x20c/0x2c0 [ 26.096402] perf_swevent_event+0x10e/0x270 [ 26.096405] ___perf_sw_event+0x491/0x6d0 [ 26.096407] __schedule+0xd53/0x2040 [ 26.096409] schedule+0xf5/0x430 [ 26.096412] exit_to_usermode_loop+0x1d1/0x2f0 [ 26.096414] do_syscall_64+0x6ed/0x940 [ 26.096417] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 26.096418] [ 26.096421] other info that might help us debug this: [ 26.096423] [ 26.096424] Chain exists of: [ 26.096426] (console_sem).lock --> &rq->lock --> report_lock [ 26.096437] [ 26.096440] Possible unsafe locking scenario: [ 26.096441] [ 26.096443] CPU0 CPU1 [ 26.096446] ---- ---- [ 26.096447] lock(report_lock); [ 26.096453] lock(&rq->lock); [ 26.096458] lock(report_lock); [ 26.096463] lock((console_sem).lock); [ 26.096468] [ 26.096470] *** DEADLOCK *** [ 26.096472] [ 26.096474] 4 locks held by syzkaller659137/4164: [ 26.096476] #0: (&rq->lock){-.-.}, at: [<00000000a7fb1983>] __schedule+0x24e/0x2040 [ 26.096485] #1: (rcu_read_lock){....}, at: [<000000005c847064>] ___perf_sw_event+0x1e4/0x6d0 [ 26.096494] #2: (rcu_read_lock){....}, at: [<000000006be1a80c>] perf_event_output_forward+0x0/0x260 [ 26.096503] #3: (report_lock){....}, at: [<0000000072cb23fc>] kasan_report+0x6b/0x360 [ 26.096512] [ 26.096514] stack backtrace: [ 26.096517] CPU: 0 PID: 4164 Comm: syzkaller659137 Not tainted 4.16.0-rc1+ #14 [ 26.096521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.096523] Call Trace: [ 26.096525] dump_stack+0x194/0x257 [ 26.096527] ? arch_local_irq_restore+0x53/0x53 [ 26.096530] print_circular_bug.isra.38+0x2cd/0x2dc [ 26.096532] ? save_trace+0xe0/0x2b0 [ 26.096534] __lock_acquire+0x30a8/0x3e00 [ 26.096537] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.096539] ? perf_trace_run_bpf_submit+0x206/0x330 [ 26.096542] ? perf_trace_run_bpf_submit+0x206/0x330 [ 26.096545] ? perf_trace_run_bpf_submit+0x20d/0x330 [ 26.096547] ? perf_tp_event+0xae0/0xae0 [ 26.096549] ? is_bpf_text_address+0xa4/0x120 [ 26.096551] ? memset+0x31/0x40 [ 26.096554] ? perf_trace_lock+0x4d6/0x900 [ 26.096556] ? trace_event_raw_event_lock+0x340/0x340 [ 26.096559] ? save_stack_trace+0x1a/0x20 [ 26.096561] ? save_trace+0xe0/0x2b0 [ 26.096563] ? check_noncircular+0x20/0x20 [ 26.096565] lock_acquire+0x1d5/0x580 [ 26.096567] ? lock_acquire+0x1d5/0x580 [ 26.096570] ? down_trylock+0x13/0x70 [ 26.096572] ? lock_release+0xa40/0xa40 [ 26.096574] ? vprintk_emit+0x43b/0xb90 [ 26.096576] ? lock_downgrade+0x980/0x980 [ 26.096579] ? kvm_sched_clock_read+0x25/0x40 [ 26.096581] ? sched_clock+0x31/0x40 [ 26.096583] ? sched_clock_cpu+0x1b/0x180 [ 26.096585] ? vprintk_emit+0x5b5/0xb90 [ 26.096588] _raw_spin_lock_irqsave+0x96/0xc0 [ 26.096590] ? down_trylock+0x13/0x70 [ 26.096592] down_trylock+0x13/0x70 [ 26.096594] ? vprintk_emit+0x5b5/0xb90 [ 26.096597] __down_trylock_console_sem+0xa2/0x1e0 [ 26.096599] console_trylock+0x15/0x70 [ 26.096601] vprintk_emit+0x5b5/0xb90 [ 26.096604] ? console_unlock+0xfb0/0xfb0 [ 26.096606] ? rcu_read_lock_sched_held+0x108/0x120 [ 26.096609] ? attach_entity_load_avg+0x5ab/0x7a0 [ 26.096611] ? __lock_acquire+0x664/0x3e00 [ 26.096613] ? rb_erase_cached+0xf50/0x3540 [ 26.096616] ? tracing_generic_entry_update+0x15a/0x1d0 [ 26.096618] ? lock_acquire+0x1d5/0x580 [ 26.096620] ? lock_acquire+0x1d5/0x580 [ 26.096622] ? kasan_report+0x6b/0x360 [ 26.096625] vprintk_default+0x28/0x30 [ 26.096627] vprintk_func+0x57/0xc0 [ 26.096629] printk+0xaa/0xca [ 26.096631] ? show_regs_print_info+0x18/0x18 [ 26.096633] ? memset+0x31/0x40 [ 26.096636] ? update_stack_state+0x6ea/0x700 [ 26.096638] kasan_report+0x7b/0x360 [ 26.096641] __asan_report_load8_noabort+0x14/0x20 [ 26.096643] update_stack_state+0x6ea/0x700 [ 26.096646] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 26.096648] ? check_noncircular+0x20/0x20 [ 26.096650] ? find_held_lock+0x35/0x1d0 [ 26.096653] __unwind_start+0xfd/0x330 [ 26.096655] ? check_noncircular+0x20/0x20 [ 26.096657] perf_callchain_kernel+0x2fb/0x610 [ 26.096660] ? arch_perf_update_userpage+0x4c0/0x4c0 [ 26.096662] get_perf_callchain+0x48f/0xa50 [ 26.096665] ? put_callchain_buffers+0x110/0x110 [ 26.096667] ? kvm_sched_clock_read+0x25/0x40 [ 26.096669] ? sched_clock+0x31/0x40 [ 26.096671] ? sched_clock_cpu+0x1b/0x180 [ 26.096674] ? local_clock+0x15/0x20 [ 26.096677] ? __perf_event_header__init_id+0x2ee/0x440 [ 26.096679] perf_prepare_sample+0x118b/0x16f0 [ 26.096682] ? perf_output_sample+0x1a50/0x1a50 [ 26.096684] ? trace_event_raw_event_lock+0x340/0x340 [ 26.096687] ? lock_release+0xa40/0xa40 [ 26.096689] ? check_noncircular+0x20/0x20 [ 26.096691] ? rcutorture_record_progress+0x10/0x10 [ 26.096694] ? put_prev_task_fair+0x80/0x80 [ 26.096696] perf_event_output_forward+0xef/0x260 [ 26.096699] ? perf_prepare_sample+0x16f0/0x16f0 [ 26.096701] ? __lock_acquire+0x664/0x3e00 [ 26.096704] ? print_irqtrace_events+0x270/0x270 [ 26.096706] ? perf_trace_run_bpf_submit+0x206/0x330 [ 26.096708] __perf_event_overflow+0x207/0x490 [ 26.096711] ? __perf_event_account_interrupt+0x240/0x240 [ 26.096713] ? __lock_acquire+0x664/0x3e00 [ 26.096716] ? perf_prepare_sample+0x16f0/0x16f0 [ 26.096718] ? check_noncircular+0x20/0x20 [ 26.096721] ? lock_acquire+0x1d5/0x580 [ 26.096723] perf_swevent_overflow+0x20c/0x2c0 [ 26.096725] ? __perf_event_overflow+0x490/0x490 [ 26.096728] ? __lock_is_held+0xb6/0x140 [ 26.096730] perf_swevent_event+0x10e/0x270 [ 26.096732] ___perf_sw_event+0x491/0x6d0 [ 26.096735] ? perf_swevent_put_recursion_context+0x60/0x60 [ 26.096738] ? put_prev_entity+0xc2/0x2a0 [ 26.096740] ? pick_next_task_fair+0xc14/0x16b0 [ 26.096742] ? rcu_pm_notify+0xc0/0xc0 [ 26.096744] ? check_noncircular+0x20/0x20 [ 26.096747] ? check_noncircular+0x20/0x20 [ 26.096749] ? __schedule+0x24e/0x2040 [ 26.096751] ? check_noncircular+0x20/0x20 [ 26.096753] ? lock_release+0xa40/0xa40 [ 26.096756] ? __lock_is_held+0xb6/0x140 [ 26.096758] __schedule+0xd53/0x2040 [ 26.096760] ? __schedule+0xd53/0x2040 [ 26.096762] ? __sched_text_start+0x8/0x8 [ 26.096765] ? __sb_end_write+0xa0/0xd0 [ 26.096767] ? pipe_write+0x5d8/0xd60 [ 26.096769] ? __vfs_write+0xf7/0x970 [ 26.096771] ? kernel_read+0x120/0x120 [ 26.096773] ? bpf_fd_pass+0x280/0x280 [ 26.096775] schedule+0xf5/0x430 [ 26.096778] ? __schedule+0x2040/0x2040 [ 26.096780] ? fsnotify_first_mark+0x2b0/0x2b0 [ 26.096782] ? rw_verify_area+0xe5/0x2b0 [ 26.096785] ? exit_to_usermode_loop+0x8c/0x2f0 [ 26.096787] exit_to_usermode_loop+0x1d1/0x2f0 [ 26.096790] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 26.096792] ? do_syscall_64+0xb7/0x940 [ 26.096794] do_syscall_64+0x6ed/0x940 [ 26.096796] ? __do_p [ 26.096800] Lost 15 message(s)! [ 27.167149] Shutting down cpus with NMI [ 28.211688] Dumping ftrace buffer: [ 28.215215] (ftrace buffer empty) [ 28.218903] Kernel Offset: disabled [ 28.222514] Rebooting in 86400 seconds..