[ 86.420118][ T27] audit: type=1400 audit(1584298855.040:37): avc: denied { watch } for pid=10290 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok [39[ 86.460070][ T27] audit: type=1400 audit(1584298855.040:38): avc: denied { watch } for pid=10290 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 ;49m8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 86.585569][ T27] audit: type=1800 audit(1584298855.210:39): pid=10187 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 86.607636][ T27] audit: type=1800 audit(1584298855.210:40): pid=10187 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 89.360623][ T27] audit: type=1400 audit(1584298857.980:41): avc: denied { map } for pid=10363 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 '10.128.0.3' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 96.198969][ T27] audit: type=1400 audit(1584298864.820:42): avc: denied { map } for pid=10375 comm="syz-executor480" path="/root/syz-executor480226823" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 109.944613][T12626] ================================================================== [ 109.952835][T12626] BUG: KASAN: slab-out-of-bounds in resample_shrink+0x5eb/0x6f0 [ 109.960460][T12626] Read of size 2 at addr ffff88808eed1a00 by task syz-executor480/12626 [ 109.968765][T12626] [ 109.971080][T12626] CPU: 0 PID: 12626 Comm: syz-executor480 Not tainted 5.6.0-rc5-syzkaller #0 [ 109.979813][T12626] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 109.989861][T12626] Call Trace: [ 109.993137][T12626] dump_stack+0x188/0x20d [ 109.997463][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.002390][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.007309][T12626] print_address_description.constprop.0.cold+0xd3/0x315 [ 110.014309][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.019236][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.024152][T12626] __kasan_report.cold+0x1a/0x32 [ 110.029072][T12626] ? snd_pcm_kernel_ioctl+0x90/0x240 [ 110.034340][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.039260][T12626] kasan_report+0xe/0x20 [ 110.043480][T12626] resample_shrink+0x5eb/0x6f0 [ 110.048238][T12626] rate_transfer+0x21a/0x2c0 [ 110.052831][T12626] snd_pcm_plug_read_transfer+0x180/0x2a0 [ 110.058559][T12626] ? snd_pcm_plug_write_transfer+0x3a0/0x3a0 [ 110.064540][T12626] ? snd_pcm_format_physical_width+0x71/0x90 [ 110.070528][T12626] ? snd_pcm_plug_client_channels_buf+0x20b/0x440 [ 110.076930][T12626] snd_pcm_oss_read2+0x1d0/0x3e0 [ 110.081853][T12626] ? snd_pcm_oss_read3+0x3f0/0x3f0 [ 110.086958][T12626] snd_pcm_oss_read+0x52b/0x6f0 [ 110.091800][T12626] ? rw_verify_area+0x11d/0x340 [ 110.096647][T12626] do_iter_read+0x47f/0x650 [ 110.101168][T12626] vfs_readv+0xf0/0x160 [ 110.105787][T12626] ? compat_rw_copy_check_uvector+0x4b0/0x4b0 [ 110.111857][T12626] ? rcu_read_lock_held_common+0x130/0x130 [ 110.117721][T12626] ? ksys_dup3+0x3c0/0x3c0 [ 110.122202][T12626] ? __fget_light+0x208/0x270 [ 110.126878][T12626] do_readv+0x133/0x2f0 [ 110.131023][T12626] ? vfs_readv+0x160/0x160 [ 110.135452][T12626] ? fpregs_mark_activate+0x320/0x320 [ 110.140818][T12626] ? trace_hardirqs_off_caller+0x55/0x230 [ 110.146542][T12626] do_syscall_64+0xf6/0x7d0 [ 110.151042][T12626] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 110.156921][T12626] RIP: 0033:0x4467e9 [ 110.160821][T12626] Code: e8 0c 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 110.180409][T12626] RSP: 002b:00007f9932d7cdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 110.188887][T12626] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004467e9 [ 110.196857][T12626] RDX: 0000000000000001 RSI: 0000000020395000 RDI: 0000000000000003 [ 110.204820][T12626] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 110.212833][T12626] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 110.220831][T12626] R13: 00007ffce1e5238f R14: 00007f9932d7d9c0 R15: 000000000000002d [ 110.228925][T12626] [ 110.231241][T12626] Allocated by task 12626: [ 110.235885][T12626] save_stack+0x1b/0x80 [ 110.240041][T12626] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 110.245689][T12626] kvmalloc_node+0x61/0xf0 [ 110.250095][T12626] snd_pcm_plugin_alloc+0x56c/0x770 [ 110.255308][T12626] snd_pcm_plug_alloc+0x145/0x330 [ 110.260328][T12626] snd_pcm_oss_change_params_locked+0x1f8b/0x34d0 [ 110.266740][T12626] snd_pcm_oss_change_params+0x76/0xd0 [ 110.272196][T12626] snd_pcm_oss_get_active_substream+0x129/0x180 [ 110.278432][T12626] snd_pcm_oss_ioctl+0xebe/0x31c0 [ 110.283455][T12626] ksys_ioctl+0x11a/0x180 [ 110.287788][T12626] __x64_sys_ioctl+0x6f/0xb0 [ 110.292374][T12626] do_syscall_64+0xf6/0x7d0 [ 110.296865][T12626] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 110.302739][T12626] [ 110.305074][T12626] Freed by task 10223: [ 110.309137][T12626] save_stack+0x1b/0x80 [ 110.313351][T12626] __kasan_slab_free+0xf7/0x140 [ 110.318243][T12626] kfree+0x109/0x2b0 [ 110.322128][T12626] tomoyo_supervisor+0x34d/0xee0 [ 110.327090][T12626] tomoyo_path_number_perm+0x3e9/0x4d0 [ 110.332555][T12626] security_file_ioctl+0x6c/0xb0 [ 110.337541][T12626] ksys_ioctl+0x50/0x180 [ 110.341809][T12626] __x64_sys_ioctl+0x6f/0xb0 [ 110.346522][T12626] do_syscall_64+0xf6/0x7d0 [ 110.351017][T12626] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 110.356893][T12626] [ 110.359211][T12626] The buggy address belongs to the object at ffff88808eed1800 [ 110.359211][T12626] which belongs to the cache kmalloc-512 of size 512 [ 110.373412][T12626] The buggy address is located 0 bytes to the right of [ 110.373412][T12626] 512-byte region [ffff88808eed1800, ffff88808eed1a00) [ 110.387023][T12626] The buggy address belongs to the page: [ 110.392647][T12626] page:ffffea00023bb440 refcount:1 mapcount:0 mapping:ffff8880aa000a80 index:0xffff88808eed1c00 [ 110.403162][T12626] flags: 0xfffe0000000200(slab) [ 110.408132][T12626] raw: 00fffe0000000200 ffffea000260ae48 ffffea0002a1b888 ffff8880aa000a80 [ 110.416712][T12626] raw: ffff88808eed1c00 ffff88808eed1000 0000000100000002 0000000000000000 [ 110.425337][T12626] page dumped because: kasan: bad access detected [ 110.431741][T12626] [ 110.434057][T12626] Memory state around the buggy address: [ 110.439676][T12626] ffff88808eed1900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 110.447727][T12626] ffff88808eed1980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 110.455779][T12626] >ffff88808eed1a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 110.463823][T12626] ^ [ 110.467877][T12626] ffff88808eed1a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 110.475920][T12626] ffff88808eed1b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 110.484071][T12626] ================================================================== executing program executing program executing program executing program [ 110.492123][T12626] Disabling lock debugging due to kernel taint [ 110.511155][T12626] Kernel panic - not syncing: panic_on_warn set ... [ 110.517787][T12626] CPU: 0 PID: 12626 Comm: syz-executor480 Tainted: G B 5.6.0-rc5-syzkaller #0 [ 110.528050][T12626] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 110.538109][T12626] Call Trace: [ 110.541391][T12626] dump_stack+0x188/0x20d executing program [ 110.545712][T12626] panic+0x2e3/0x75c [ 110.549600][T12626] ? add_taint.cold+0x16/0x16 [ 110.554278][T12626] ? preempt_schedule_common+0x5e/0xc0 [ 110.559740][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.564815][T12626] ? ___preempt_schedule+0x16/0x18 [ 110.569913][T12626] ? trace_hardirqs_on+0x55/0x220 [ 110.574929][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.579891][T12626] end_report+0x43/0x49 [ 110.584036][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.588968][T12626] __kasan_report.cold+0xd/0x32 [ 110.593820][T12626] ? snd_pcm_kernel_ioctl+0x90/0x240 [ 110.599102][T12626] ? resample_shrink+0x5eb/0x6f0 [ 110.604082][T12626] kasan_report+0xe/0x20 [ 110.608340][T12626] resample_shrink+0x5eb/0x6f0 [ 110.613103][T12626] rate_transfer+0x21a/0x2c0 [ 110.617682][T12626] snd_pcm_plug_read_transfer+0x180/0x2a0 [ 110.623548][T12626] ? snd_pcm_plug_write_transfer+0x3a0/0x3a0 [ 110.629532][T12626] ? snd_pcm_format_physical_width+0x71/0x90 [ 110.635556][T12626] ? snd_pcm_plug_client_channels_buf+0x20b/0x440 [ 110.641979][T12626] snd_pcm_oss_read2+0x1d0/0x3e0 executing program executing program [ 110.646920][T12626] ? snd_pcm_oss_read3+0x3f0/0x3f0 [ 110.652226][T12626] snd_pcm_oss_read+0x52b/0x6f0 [ 110.657414][T12626] ? rw_verify_area+0x11d/0x340 [ 110.662256][T12626] do_iter_read+0x47f/0x650 [ 110.666769][T12626] vfs_readv+0xf0/0x160 [ 110.670954][T12626] ? compat_rw_copy_check_uvector+0x4b0/0x4b0 [ 110.677023][T12626] ? rcu_read_lock_held_common+0x130/0x130 [ 110.682838][T12626] ? ksys_dup3+0x3c0/0x3c0 [ 110.687268][T12626] ? __fget_light+0x208/0x270 [ 110.691995][T12626] do_readv+0x133/0x2f0 executing program [ 110.696154][T12626] ? vfs_readv+0x160/0x160 [ 110.700575][T12626] ? fpregs_mark_activate+0x320/0x320 [ 110.706036][T12626] ? trace_hardirqs_off_caller+0x55/0x230 [ 110.711757][T12626] do_syscall_64+0xf6/0x7d0 [ 110.716897][T12626] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 110.722868][T12626] RIP: 0033:0x4467e9 [ 110.726767][T12626] Code: e8 0c 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 110.746864][T12626] RSP: 002b:00007f9932d7cdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 110.755673][T12626] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004467e9 [ 110.763796][T12626] RDX: 0000000000000001 RSI: 0000000020395000 RDI: 0000000000000003 [ 110.771760][T12626] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 110.779890][T12626] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 110.787879][T12626] R13: 00007ffce1e5238f R14: 00007f9932d7d9c0 R15: 000000000000002d [ 110.797269][T12626] Kernel Offset: disabled [ 110.801626][T12626] Rebooting in 86400 seconds..