[ 53.411400][ T26] audit: type=1800 audit(1573152606.459:30): pid=7794 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.1.2' (ECDSA) to the list of known hosts.
2019/11/07 18:50:15 fuzzer started
2019/11/07 18:50:17 dialing manager at 10.128.0.105:38105
2019/11/07 18:50:17 syscalls: 2553
2019/11/07 18:50:17 code coverage: enabled
2019/11/07 18:50:17 comparison tracing: enabled
2019/11/07 18:50:17 extra coverage: extra coverage is not supported by the kernel
2019/11/07 18:50:17 setuid sandbox: enabled
2019/11/07 18:50:17 namespace sandbox: enabled
2019/11/07 18:50:17 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/07 18:50:17 fault injection: enabled
2019/11/07 18:50:17 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/07 18:50:17 net packet injection: enabled
2019/11/07 18:50:17 net device setup: enabled
2019/11/07 18:50:17 concurrency sanitizer: enabled
2019/11/07 18:50:17 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 65.223497][ C0] ==================================================================
[ 65.231608][ C0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 65.240522][ C0]
[ 65.242837][ C0] write to 0xffffffff86043008 of 8 bytes by task 0 on cpu 1:
[ 65.250189][ C0] tick_do_update_jiffies64+0x100/0x250
[ 65.255719][ C0] tick_irq_enter+0x139/0x1c0
[ 65.260387][ C0] irq_enter+0x4f/0x60
[ 65.264448][ C0] smp_apic_timer_interrupt+0x55/0x280
[ 65.269976][ C0] apic_timer_interrupt+0xf/0x20
[ 65.275005][ C0] native_safe_halt+0xe/0x10
[ 65.279587][ C0] arch_cpu_idle+0x1f/0x30
[ 65.283997][ C0] default_idle_call+0x1e/0x40
[ 65.288830][ C0] do_idle+0x1af/0x280
[ 65.292877][ C0] cpu_startup_entry+0x1b/0x20
[ 65.297646][ C0] start_secondary+0x208/0x260
[ 65.302400][ C0] secondary_startup_64+0xa4/0xb0
[ 65.307405][ C0]
[ 65.309714][ C0] read to 0xffffffff86043008 of 8 bytes by interrupt on cpu 0:
[ 65.317247][ C0] tick_do_update_jiffies64+0x2b/0x250
[ 65.322686][ C0] tick_sched_do_timer+0xd4/0xe0
[ 65.327633][ C0] tick_sched_timer+0x43/0xe0
[ 65.332291][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 65.337467][ C0] hrtimer_interrupt+0x22a/0x480
[ 65.342388][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 65.347827][ C0] apic_timer_interrupt+0xf/0x20
[ 65.352755][ C0] __tsan_read1+0xa4/0x1e0
[ 65.357156][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 65.363590][ C0] kallsyms_lookup_name+0x7f/0x120
[ 65.368691][ C0] debugfs_write+0x14b/0x2d0
[ 65.373400][ C0] full_proxy_write+0xbd/0x100
[ 65.378165][ C0] __vfs_write+0x67/0xc0
[ 65.382405][ C0] vfs_write+0x18a/0x390
[ 65.386641][ C0] ksys_write+0xd5/0x1b0
[ 65.390865][ C0] __x64_sys_write+0x4c/0x60
[ 65.395450][ C0] do_syscall_64+0xcc/0x370
[ 65.399936][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 65.405805][ C0]
[ 65.408108][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 65.414248][ C0] CPU: 0 PID: 7965 Comm: syz-executor Not tainted 5.4.0-rc6+ #0
[ 65.421854][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 65.431897][ C0] ==================================================================
[ 65.439951][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 65.446521][ C0] CPU: 0 PID: 7965 Comm: syz-executor Not tainted 5.4.0-rc6+ #0
[ 65.454139][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 65.464442][ C0] Call Trace:
[ 65.467706][ C0]
[ 65.470551][ C0] dump_stack+0xf5/0x159
[ 65.474783][ C0] panic+0x210/0x640
[ 65.478664][ C0] ? vprintk_func+0x8d/0x140
[ 65.483240][ C0] kcsan_report.cold+0xc/0xe
[ 65.487829][ C0] kcsan_setup_watchpoint+0x3fe/0x410
[ 65.493184][ C0] __tsan_read8+0x145/0x1f0
[ 65.497676][ C0] tick_do_update_jiffies64+0x2b/0x250
[ 65.503119][ C0] tick_sched_do_timer+0xd4/0xe0
[ 65.508052][ C0] tick_sched_timer+0x43/0xe0
[ 65.512720][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 65.517903][ C0] ? tick_sched_handle+0x100/0x100
[ 65.522999][ C0] hrtimer_interrupt+0x22a/0x480
[ 65.527929][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 65.533389][ C0] ? do_IRQ+0xcb/0x180
[ 65.537471][ C0] apic_timer_interrupt+0xf/0x20
[ 65.542389][ C0]
[ 65.545330][ C0] RIP: 0010:__tsan_read1+0xa4/0x1e0
[ 65.550526][ C0] Code: 81 e2 ff 3f 00 00 48 85 c0 79 13 4f 8d 54 13 ff 4d 39 d0 77 09 4d 39 d8 0f 83 be 00 00 00 83 fa 03 75 8a 65 8b 05 14 c6 ae 7e 00 01 1f 00 0f 85 93 00 00 00 65 48 8b 04 25 40 6c 01 00 48 05
[ 65.570123][ C0] RSP: 0018:ffffc900016cbbe8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 65.578517][ C0] RAX: 0000000080000000 RBX: ffffffff86046cb8 RCX: 0000ffffffffffff
[ 65.586475][ C0] RDX: 0000000000000003 RSI: 0000000000000014 RDI: ffffffff855d4576
[ 65.594429][ C0] RBP: ffffc900016cbbf0 R08: 0000ffff855d4576 R09: 00000000aaaaaaab
[ 65.602388][ C0] R10: 0000000000000000 R11: 00000000aaaaaaab R12: 0000000000000076
[ 65.610352][ C0] R13: 0000000000000001 R14: ffffc900016cbc4d R15: 000000000000007b
[ 65.618324][ C0] ? __tsan_unaligned_write1+0x13d/0x1e0
[ 65.623947][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 65.630347][ C0] kallsyms_lookup_name+0x7f/0x120
[ 65.635459][ C0] ? __check_object_size+0x5f/0x346
[ 65.640645][ C0] ? strlen+0x3b/0x60
[ 65.644617][ C0] debugfs_write+0x14b/0x2d0
[ 65.649188][ C0] ? __read_once_size.constprop.0+0x12/0x20
[ 65.655065][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 65.661287][ C0] ? refcount_inc_not_zero_checked+0xba/0x150
[ 65.667339][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 65.673563][ C0] ? debugfs_file_get+0xae/0x1e0
[ 65.678484][ C0] full_proxy_write+0xbd/0x100
[ 65.683232][ C0] __vfs_write+0x67/0xc0
[ 65.687454][ C0] ? full_proxy_poll+0xf0/0xf0
[ 65.692214][ C0] vfs_write+0x18a/0x390
[ 65.696445][ C0] ksys_write+0xd5/0x1b0
[ 65.700682][ C0] __x64_sys_write+0x4c/0x60
[ 65.705262][ C0] do_syscall_64+0xcc/0x370
[ 65.709760][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 65.715656][ C0] RIP: 0033:0x413cd0
[ 65.719543][ C0] Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 3d 43 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff
[ 65.739127][ C0] RSP: 002b:00007ffe186eb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 65.747521][ C0] RAX: ffffffffffffffda RBX: 000000000000000e RCX: 0000000000413cd0
[ 65.755474][ C0] RDX: 000000000000000e RSI: 0000000000aa0950 RDI: 0000000000000003
[ 65.764384][ C0] RBP: 0000000000aa0950 R08: 0000000000000100 R09: 000000000000000e
[ 65.772344][ C0] R10: 000000000000000c R11: 0000000000000246 R12: 000000000000000e
[ 65.780305][ C0] R13: 0000000000000001 R14: 00007ffe186eba70 R15: 0000000000000000
[ 65.789672][ C0] Kernel Offset: disabled
[ 65.794009][ C0] Rebooting in 86400 seconds..