[ 37.767057] audit: type=1800 audit(1547206449.875:26): pid=7592 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.790511] audit: type=1800 audit(1547206449.875:27): pid=7592 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.811927] audit: type=1800 audit(1547206449.885:28): pid=7592 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.367227] audit: type=1800 audit(1547206450.505:29): pid=7592 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.184' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 45.870286] kauditd_printk_skb: 1 callbacks suppressed [ 45.870300] audit: type=1326 audit(1547206458.015:31): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7746 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 executing program executing program [ 45.902512] audit: type=1326 audit(1547206458.045:32): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7753 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 [ 45.927205] audit: type=1326 audit(1547206458.045:33): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7752 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program [ 45.953413] audit: type=1326 audit(1547206458.045:34): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7754 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 [ 45.983700] audit: type=1326 audit(1547206458.065:35): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7746 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program executing program [ 46.006718] audit: type=1326 audit(1547206458.065:36): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7757 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 [ 46.035940] audit: type=1326 audit(1547206458.095:37): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7753 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program [ 46.061709] audit: type=1326 audit(1547206458.095:38): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7752 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 46.087119] audit: type=1326 audit(1547206458.095:39): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7754 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program executing program [ 46.113147] audit: type=1326 audit(1547206458.115:40): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=7757 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.879948] kauditd_printk_skb: 1156 callbacks suppressed [ 50.879961] audit: type=1326 audit(1547206463.025:1197): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8922 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program [ 50.911265] audit: type=1326 audit(1547206463.025:1198): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8912 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 50.941662] audit: type=1326 audit(1547206463.055:1199): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8918 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program [ 50.963766] audit: type=1326 audit(1547206463.055:1200): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8913 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 50.988923] audit: type=1326 audit(1547206463.055:1201): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8916 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program [ 51.017627] audit: type=1326 audit(1547206463.055:1202): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8917 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 51.040958] audit: type=1326 audit(1547206463.075:1203): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8922 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program [ 51.067645] audit: type=1326 audit(1547206463.075:1204): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8928 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 [ 51.100871] audit: type=1326 audit(1547206463.075:1205): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8924 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program executing program executing program [ 51.123772] audit: type=1326 audit(1547206463.085:1206): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=8926 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 55.896800] kauditd_printk_skb: 1141 callbacks suppressed [ 55.896813] audit: type=1326 audit(1547206468.035:2348): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10063 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 executing program executing program executing program executing program executing program [ 55.936616] audit: type=1326 audit(1547206468.045:2349): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10066 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 55.959358] audit: type=1326 audit(1547206468.065:2350): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10071 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 55.993774] audit: type=1326 audit(1547206468.065:2351): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10067 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 56.016549] audit: type=1326 audit(1547206468.065:2352): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10065 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 56.040451] audit: type=1326 audit(1547206468.075:2353): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10073 comm="syz-executor035" exe="/root/syz-executor035476039" sig=31 arch=40000003 syscall=6 compat=1 ip=0xf7fef869 code=0x0 [ 56.040719] ================================================================== [ 56.070022] BUG: KASAN: use-after-free in __lock_acquire+0x3556/0x4a30 [ 56.076685] Read of size 8 at addr ffff888091c5cc80 by task syz-executor035/10088 [ 56.084297] [ 56.085914] CPU: 1 PID: 10088 Comm: syz-executor035 Not tainted 5.0.0-rc1+ #19 [ 56.093270] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.102604] Call Trace: [ 56.105176] dump_stack+0x1db/0x2d0 [ 56.108791] ? dump_stack_print_info.cold+0x20/0x20 [ 56.113793] ? mark_held_locks+0x100/0x100 [ 56.118013] ? __lock_acquire+0x3556/0x4a30 [ 56.122322] print_address_description.cold+0x7c/0x20d [ 56.127595] ? __lock_acquire+0x3556/0x4a30 [ 56.131899] ? __lock_acquire+0x3556/0x4a30 [ 56.136211] kasan_report.cold+0x1b/0x40 [ 56.140255] ? __lock_acquire+0x3556/0x4a30 [ 56.144588] __asan_report_load8_noabort+0x14/0x20 [ 56.149502] __lock_acquire+0x3556/0x4a30 [ 56.153636] ? lock_acquire+0x1db/0x570 [ 56.157595] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 56.162682] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 56.167774] ? lockdep_hardirqs_on+0x415/0x5d0 [ 56.172348] ? mark_held_locks+0x100/0x100 [ 56.176568] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 56.181654] ? __free_object+0x16c/0x350 [ 56.185700] ? debug_object_free+0x2ab/0x5f0 [ 56.190100] ? __list_del_entry_valid.cold+0x4f/0x4f [ 56.195205] ? do_raw_spin_trylock+0x270/0x270 [ 56.199773] ? debug_object_free+0x2b3/0x5f0 [ 56.204252] ? debug_object_destroy+0x250/0x250 [ 56.208904] lock_acquire+0x1db/0x570 [ 56.212690] ? seccomp_notify_release+0x54/0x270 [ 56.217431] ? ___might_sleep+0x1e7/0x310 [ 56.221566] ? lock_release+0xc40/0xc40 [ 56.225527] ? seccomp_notify_release+0x54/0x270 [ 56.230270] ? seccomp_notify_release+0x54/0x270 [ 56.235008] __mutex_lock+0x12f/0x1670 [ 56.238878] ? seccomp_notify_release+0x54/0x270 [ 56.243617] ? seccomp_notify_release+0x54/0x270 [ 56.248360] ? __lock_acquire+0x572/0x4a30 [ 56.252579] ? mutex_trylock+0x2d0/0x2d0 [ 56.256634] ? mark_held_locks+0x100/0x100 [ 56.260859] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.266379] ? locks_remove_posix+0x488/0x860 [ 56.270857] ? mark_held_locks+0x100/0x100 [ 56.275084] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.280604] ? fsnotify+0x4f5/0xed0 [ 56.284215] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.289735] ? locks_remove_file+0x3d5/0x5c0 [ 56.294127] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 56.299646] ? ima_file_free+0x128/0x630 [ 56.303689] ? fcntl_setlk+0xfe0/0xfe0 [ 56.307562] mutex_lock_nested+0x16/0x20 [ 56.311605] ? mutex_lock_nested+0x16/0x20 [ 56.315822] seccomp_notify_release+0x54/0x270 [ 56.320392] __fput+0x3c5/0xb10 [ 56.323658] ? get_nth_filter.part.0+0x1d0/0x1d0 [ 56.328398] ? get_max_files+0x20/0x20 [ 56.332271] ? task_work_run+0x1bb/0x2b0 [ 56.336316] ? trace_hardirqs_off_caller+0x300/0x300 [ 56.341401] ? do_raw_spin_trylock+0x270/0x270 [ 56.345967] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.351488] ____fput+0x16/0x20 [ 56.354754] task_work_run+0x1f4/0x2b0 [ 56.358624] ? task_work_cancel+0x2c0/0x2c0 [ 56.362944] ? __close_fd+0x25f/0x3d0 [ 56.366731] ? do_fast_syscall_32+0x13b/0xf98 [ 56.371211] exit_to_usermode_loop+0x32a/0x3b0 [ 56.375777] ? entry_SYSENTER_compat+0x70/0x7f [ 56.380346] ? syscall_trace_enter+0x12a0/0x12a0 [ 56.385092] ? __do_page_fault+0x3f1/0xd60 [ 56.389313] do_fast_syscall_32+0xc97/0xf98 [ 56.393620] ? do_int80_syscall_32+0x880/0x880 [ 56.398183] ? trace_hardirqs_off+0x310/0x310 [ 56.402663] ? do_syscall_64+0x800/0x800 [ 56.406712] ? prepare_exit_to_usermode+0x232/0x3b0 [ 56.411716] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.416545] entry_SYSENTER_compat+0x70/0x7f [ 56.420937] RIP: 0023:0xf7fef869 [ 56.424289] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 56.443173] RSP: 002b:00000000ffdeb7dc EFLAGS: 00000296 ORIG_RAX: 0000000000000006 [ 56.450877] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 56.458130] RDX: 0000000000000003 RSI: 000000000000002d RDI: 00000000080faffc [ 56.465384] RBP: 00000000ffdeb858 R08: 0000000000000000 R09: 0000000000000000 [ 56.472648] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 56.479913] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 56.487167] [ 56.488780] Allocated by task 10101: [ 56.492479] save_stack+0x45/0xd0 [ 56.495916] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 56.500828] kasan_kmalloc+0x9/0x10 [ 56.504436] kmem_cache_alloc_trace+0x151/0x760 [ 56.509088] do_seccomp+0x941/0x2cc0 [ 56.512785] __ia32_sys_seccomp+0x72/0xb0 [ 56.516921] do_fast_syscall_32+0x333/0xf98 [ 56.521242] entry_SYSENTER_compat+0x70/0x7f [ 56.525628] [ 56.527234] Freed by task 10101: [ 56.530581] save_stack+0x45/0xd0 [ 56.534016] __kasan_slab_free+0x102/0x150 [ 56.538235] kasan_slab_free+0xe/0x10 [ 56.542019] kfree+0xcf/0x230 [ 56.545107] do_seccomp+0xda3/0x2cc0 [ 56.548802] __ia32_sys_seccomp+0x72/0xb0 [ 56.552937] do_fast_syscall_32+0x333/0xf98 [ 56.557240] entry_SYSENTER_compat+0x70/0x7f [ 56.561624] [ 56.563238] The buggy address belongs to the object at ffff888091c5cc00 [ 56.563238] which belongs to the cache kmalloc-192 of size 192 [ 56.575874] The buggy address is located 128 bytes inside of [ 56.575874] 192-byte region [ffff888091c5cc00, ffff888091c5ccc0) [ 56.587724] The buggy address belongs to the page: [ 56.592635] page:ffffea0002471700 count:1 mapcount:0 mapping:ffff88812c3f0040 index:0x0 [ 56.600756] flags: 0x1fffc0000000200(slab) [ 56.604978] raw: 01fffc0000000200 ffffea000295f888 ffff88812c3f1148 ffff88812c3f0040 [ 56.612857] raw: 0000000000000000 ffff888091c5c000 0000000100000010 0000000000000000 [ 56.620716] page dumped because: kasan: bad access detected [ 56.626402] [ 56.628007] Memory state around the buggy address: [ 56.632918] ffff888091c5cb80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 56.640258] ffff888091c5cc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 56.647598] >ffff888091c5cc80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 56.654935] ^ [ 56.658300] ffff888091c5cd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 56.665640] ffff888091c5cd80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc [ 56.672979] ================================================================== [ 56.680317] Disabling lock debugging due to kernel taint [ 56.685749] Kernel panic - not syncing: panic_on_warn set ... [ 56.691617] CPU: 1 PID: 10088 Comm: syz-executor035 Tainted: G B 5.0.0-rc1+ #19 [ 56.700344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.709679] Call Trace: [ 56.712252] dump_stack+0x1db/0x2d0 [ 56.715866] ? dump_stack_print_info.cold+0x20/0x20 [ 56.720883] panic+0x2cb/0x65c [ 56.724063] ? add_taint.cold+0x16/0x16 [ 56.728021] ? kasan_check_read+0x11/0x20 [ 56.732158] ? trace_hardirqs_on_caller+0x310/0x310 [ 56.737159] ? do_raw_spin_trylock+0x270/0x270 [ 56.741727] ? add_taint.cold+0x5/0x16 [ 56.745598] ? trace_hardirqs_off+0xaf/0x310 [ 56.749993] ? __lock_acquire+0x3556/0x4a30 [ 56.754299] end_report+0x47/0x4f [ 56.757749] ? __lock_acquire+0x3556/0x4a30 [ 56.762065] kasan_report.cold+0xe/0x40 [ 56.766026] ? __lock_acquire+0x3556/0x4a30 [ 56.770341] __asan_report_load8_noabort+0x14/0x20 [ 56.775252] __lock_acquire+0x3556/0x4a30 [ 56.779383] ? lock_acquire+0x1db/0x570 [ 56.783341] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 56.788426] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 56.793512] ? lockdep_hardirqs_on+0x415/0x5d0 [ 56.798090] ? mark_held_locks+0x100/0x100 [ 56.802326] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 56.807503] ? __free_object+0x16c/0x350 [ 56.811549] ? debug_object_free+0x2ab/0x5f0 [ 56.815943] ? __list_del_entry_valid.cold+0x4f/0x4f [ 56.821038] ? do_raw_spin_trylock+0x270/0x270 [ 56.825610] ? debug_object_free+0x2b3/0x5f0 [ 56.830005] ? debug_object_destroy+0x250/0x250 [ 56.834767] lock_acquire+0x1db/0x570 [ 56.839130] ? seccomp_notify_release+0x54/0x270 [ 56.843873] ? ___might_sleep+0x1e7/0x310 [ 56.848018] ? lock_release+0xc40/0xc40 [ 56.851986] ? seccomp_notify_release+0x54/0x270 [ 56.856724] ? seccomp_notify_release+0x54/0x270 [ 56.861465] __mutex_lock+0x12f/0x1670 [ 56.865338] ? seccomp_notify_release+0x54/0x270 [ 56.870077] ? seccomp_notify_release+0x54/0x270 [ 56.874818] ? __lock_acquire+0x572/0x4a30 [ 56.879044] ? mutex_trylock+0x2d0/0x2d0 [ 56.883094] ? mark_held_locks+0x100/0x100 [ 56.887431] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.892955] ? locks_remove_posix+0x488/0x860 [ 56.897434] ? mark_held_locks+0x100/0x100 [ 56.901654] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.907175] ? fsnotify+0x4f5/0xed0 [ 56.910794] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.916314] ? locks_remove_file+0x3d5/0x5c0 [ 56.920706] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 56.926228] ? ima_file_free+0x128/0x630 [ 56.930272] ? fcntl_setlk+0xfe0/0xfe0 [ 56.934148] mutex_lock_nested+0x16/0x20 [ 56.938192] ? mutex_lock_nested+0x16/0x20 [ 56.942414] seccomp_notify_release+0x54/0x270 [ 56.946984] __fput+0x3c5/0xb10 [ 56.950250] ? get_nth_filter.part.0+0x1d0/0x1d0 [ 56.954989] ? get_max_files+0x20/0x20 [ 56.958858] ? task_work_run+0x1bb/0x2b0 [ 56.962904] ? trace_hardirqs_off_caller+0x300/0x300 [ 56.967995] ? do_raw_spin_trylock+0x270/0x270 [ 56.972569] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.978096] ____fput+0x16/0x20 [ 56.981362] task_work_run+0x1f4/0x2b0 [ 56.985236] ? task_work_cancel+0x2c0/0x2c0 [ 56.989540] ? __close_fd+0x25f/0x3d0 [ 56.993327] ? do_fast_syscall_32+0x13b/0xf98 [ 56.997807] exit_to_usermode_loop+0x32a/0x3b0 [ 57.002375] ? entry_SYSENTER_compat+0x70/0x7f [ 57.006944] ? syscall_trace_enter+0x12a0/0x12a0 [ 57.011684] ? __do_page_fault+0x3f1/0xd60 [ 57.015906] do_fast_syscall_32+0xc97/0xf98 [ 57.020214] ? do_int80_syscall_32+0x880/0x880 [ 57.024783] ? trace_hardirqs_off+0x310/0x310 [ 57.029262] ? do_syscall_64+0x800/0x800 [ 57.033309] ? prepare_exit_to_usermode+0x232/0x3b0 [ 57.038312] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.043141] entry_SYSENTER_compat+0x70/0x7f [ 57.047533] RIP: 0023:0xf7fef869 [ 57.050886] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 57.069775] RSP: 002b:00000000ffdeb7dc EFLAGS: 00000296 ORIG_RAX: 0000000000000006 [ 57.077467] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 57.084818] RDX: 0000000000000003 RSI: 000000000000002d RDI: 00000000080faffc [ 57.092075] RBP: 00000000ffdeb858 R08: 0000000000000000 R09: 0000000000000000 [ 57.099348] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 57.106601] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 57.115061] Kernel Offset: disabled [ 57.118682] Rebooting in 86400 seconds..