[ 91.651647][ T26] audit: type=1400 audit(1578418383.438:37): avc: denied { watch } for pid=10138 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 [ 91.689375][ T26] audit: type=1400 audit(1578418383.438:38): avc: denied { watch } for pid=10138 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 [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 91.951567][ T26] audit: type=1800 audit(1578418383.738:39): pid=10050 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 [ 91.973577][ T26] audit: type=1800 audit(1578418383.738:40): pid=10050 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: [ 97.057333][ T26] audit: type=1400 audit(1578418388.848:41): avc: denied { map } for pid=10229 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 '10.128.0.19' (ECDSA) to the list of known hosts. executing program [ 103.808150][ T26] audit: type=1400 audit(1578418395.598:42): avc: denied { map } for pid=10241 comm="syz-executor245" path="/root/syz-executor245772011" 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 [ 103.909686][T10241] ================================================================== [ 103.909731][T10241] BUG: KASAN: slab-out-of-bounds in soft_cursor+0x439/0xa30 [ 103.909738][T10241] Read of size 16 at addr ffff888093c88740 by task syz-executor245/10241 [ 103.909741][T10241] [ 103.909751][T10241] CPU: 0 PID: 10241 Comm: syz-executor245 Not tainted 5.5.0-rc5-syzkaller #0 [ 103.909756][T10241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.909760][T10241] Call Trace: [ 103.909772][T10241] dump_stack+0x197/0x210 [ 103.909780][T10241] ? soft_cursor+0x439/0xa30 [ 103.909794][T10241] print_address_description.constprop.0.cold+0xd4/0x30b [ 103.909801][T10241] ? soft_cursor+0x439/0xa30 [ 103.909809][T10241] ? soft_cursor+0x439/0xa30 [ 103.909817][T10241] __kasan_report.cold+0x1b/0x41 [ 103.909826][T10241] ? soft_cursor+0x439/0xa30 [ 103.909836][T10241] kasan_report+0x12/0x20 [ 103.909845][T10241] check_memory_region+0x134/0x1a0 [ 103.909853][T10241] memcpy+0x24/0x50 [ 103.909862][T10241] soft_cursor+0x439/0xa30 [ 103.909871][T10241] ? lockdep_hardirqs_on+0x421/0x5e0 [ 103.909884][T10241] bit_cursor+0x12fc/0x1a60 [ 103.909897][T10241] ? bit_clear+0x530/0x530 [ 103.909905][T10241] ? find_held_lock+0x35/0x130 [ 103.909921][T10241] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 103.909929][T10241] ? get_color+0x225/0x430 [ 103.909939][T10241] fbcon_cursor+0x487/0x660 [ 103.909946][T10241] ? bit_clear+0x530/0x530 [ 103.909959][T10241] hide_cursor+0x9d/0x2b0 [ 103.909968][T10241] redraw_screen+0x60b/0x7d0 [ 103.909976][T10241] ? respond_string+0x2c0/0x2c0 [ 103.909989][T10241] vc_do_resize+0x10c9/0x1460 [ 103.909998][T10241] ? down+0x50/0x90 [ 103.910014][T10241] ? vc_uniscr_alloc+0xd0/0xd0 [ 103.910023][T10241] ? lock_acquire+0x190/0x410 [ 103.910030][T10241] ? vt_ioctl+0x1f56/0x26d0 [ 103.910041][T10241] vc_resize+0x4d/0x60 [ 103.910049][T10241] vt_ioctl+0x2076/0x26d0 [ 103.910059][T10241] ? complete_change_console+0x3a0/0x3a0 [ 103.910066][T10241] ? lock_downgrade+0x920/0x920 [ 103.910074][T10241] ? rwlock_bug.part.0+0x90/0x90 [ 103.910085][T10241] ? tomoyo_path_number_perm+0x214/0x520 [ 103.910093][T10241] ? find_held_lock+0x35/0x130 [ 103.910102][T10241] ? tomoyo_path_number_perm+0x214/0x520 [ 103.910111][T10241] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 103.910121][T10241] ? tty_jobctrl_ioctl+0x50/0xd40 [ 103.910129][T10241] ? complete_change_console+0x3a0/0x3a0 [ 103.910139][T10241] tty_ioctl+0xa37/0x14f0 [ 103.910149][T10241] ? tty_vhangup+0x30/0x30 [ 103.910157][T10241] ? tomoyo_path_number_perm+0x454/0x520 [ 103.910168][T10241] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 103.910176][T10241] ? tomoyo_path_number_perm+0x25e/0x520 [ 103.910193][T10241] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 103.910207][T10241] ? ___might_sleep+0x163/0x2c0 [ 103.910219][T10241] ? tty_vhangup+0x30/0x30 [ 103.910229][T10241] do_vfs_ioctl+0x977/0x14e0 [ 103.910240][T10241] ? compat_ioctl_preallocate+0x220/0x220 [ 103.910249][T10241] ? selinux_file_mprotect+0x620/0x620 [ 103.910258][T10241] ? kmem_cache_free+0x26b/0x320 [ 103.910268][T10241] ? putname+0xf4/0x130 [ 103.910278][T10241] ? do_sys_open+0x31d/0x5d0 [ 103.910290][T10241] ? tomoyo_file_ioctl+0x23/0x30 [ 103.910298][T10241] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 103.910307][T10241] ? security_file_ioctl+0x8d/0xc0 [ 103.910317][T10241] ksys_ioctl+0xab/0xd0 [ 103.910326][T10241] __x64_sys_ioctl+0x73/0xb0 [ 103.910338][T10241] do_syscall_64+0xfa/0x790 [ 103.910350][T10241] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.910357][T10241] RIP: 0033:0x440249 [ 103.910366][T10241] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 103.910371][T10241] RSP: 002b:00007ffe11ca0a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 103.910379][T10241] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440249 [ 103.910384][T10241] RDX: 0000000020000000 RSI: 000000000000560a RDI: 0000000000000004 [ 103.910389][T10241] RBP: 00000000006cb018 R08: 000000000000000d R09: 00000000004002c8 [ 103.910394][T10241] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b30 [ 103.910398][T10241] R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000 [ 103.910409][T10241] [ 103.910413][T10241] Allocated by task 10241: [ 103.910421][T10241] save_stack+0x23/0x90 [ 103.910428][T10241] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 103.910434][T10241] kasan_kmalloc+0x9/0x10 [ 103.910440][T10241] __kmalloc+0x163/0x770 [ 103.910447][T10241] fbcon_set_font+0x32d/0x860 [ 103.910453][T10241] con_font_op+0xe30/0x1270 [ 103.910459][T10241] vt_ioctl+0x35a/0x26d0 [ 103.910466][T10241] tty_ioctl+0xa37/0x14f0 [ 103.910472][T10241] do_vfs_ioctl+0x977/0x14e0 [ 103.910479][T10241] ksys_ioctl+0xab/0xd0 [ 103.910485][T10241] __x64_sys_ioctl+0x73/0xb0 [ 103.910492][T10241] do_syscall_64+0xfa/0x790 [ 103.910500][T10241] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.910502][T10241] [ 103.910505][T10241] Freed by task 2748: [ 103.910512][T10241] save_stack+0x23/0x90 [ 103.910518][T10241] __kasan_slab_free+0x102/0x150 [ 103.910525][T10241] kasan_slab_free+0xe/0x10 [ 103.910530][T10241] kfree+0x10a/0x2c0 [ 103.910537][T10241] free_tty_struct+0x95/0xc0 [ 103.910544][T10241] release_one_tty+0x28c/0x360 [ 103.910552][T10241] process_one_work+0x9af/0x1740 [ 103.910559][T10241] worker_thread+0x98/0xe40 [ 103.910565][T10241] kthread+0x361/0x430 [ 103.910571][T10241] ret_from_fork+0x24/0x30 [ 103.910573][T10241] [ 103.910579][T10241] The buggy address belongs to the object at ffff888093c88000 [ 103.910579][T10241] which belongs to the cache kmalloc-2k of size 2048 [ 103.910586][T10241] The buggy address is located 1856 bytes inside of [ 103.910586][T10241] 2048-byte region [ffff888093c88000, ffff888093c88800) [ 103.910589][T10241] The buggy address belongs to the page: [ 103.910597][T10241] page:ffffea00024f2200 refcount:1 mapcount:0 mapping:ffff8880aa400e00 index:0x0 [ 103.910608][T10241] raw: 00fffe0000000200 ffffea0002592048 ffffea00029cdb08 ffff8880aa400e00 [ 103.910617][T10241] raw: 0000000000000000 ffff888093c88000 0000000100000001 0000000000000000 [ 103.910621][T10241] page dumped because: kasan: bad access detected [ 103.910623][T10241] [ 103.910626][T10241] Memory state around the buggy address: [ 103.910632][T10241] ffff888093c88600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 103.910638][T10241] ffff888093c88680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 103.910645][T10241] >ffff888093c88700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 103.910648][T10241] ^ [ 103.910654][T10241] ffff888093c88780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 103.910660][T10241] ffff888093c88800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 103.910664][T10241] ================================================================== [ 103.910666][T10241] Disabling lock debugging due to kernel taint [ 103.910671][T10241] Kernel panic - not syncing: panic_on_warn set ... [ 103.910679][T10241] CPU: 0 PID: 10241 Comm: syz-executor245 Tainted: G B 5.5.0-rc5-syzkaller #0 [ 103.910683][T10241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.910686][T10241] Call Trace: [ 103.910694][T10241] dump_stack+0x197/0x210 [ 103.910703][T10241] panic+0x2e3/0x75c [ 103.910711][T10241] ? add_taint.cold+0x16/0x16 [ 103.910722][T10241] ? trace_hardirqs_on+0x67/0x240 [ 103.910729][T10241] ? trace_hardirqs_on+0x5e/0x240 [ 103.910737][T10241] ? soft_cursor+0x439/0xa30 [ 103.910744][T10241] end_report+0x47/0x4f [ 103.910750][T10241] ? soft_cursor+0x439/0xa30 [ 103.910757][T10241] __kasan_report.cold+0xe/0x41 [ 103.910765][T10241] ? soft_cursor+0x439/0xa30 [ 103.910772][T10241] kasan_report+0x12/0x20 [ 103.910780][T10241] check_memory_region+0x134/0x1a0 [ 103.910786][T10241] memcpy+0x24/0x50 [ 103.910793][T10241] soft_cursor+0x439/0xa30 [ 103.910800][T10241] ? lockdep_hardirqs_on+0x421/0x5e0 [ 103.910810][T10241] bit_cursor+0x12fc/0x1a60 [ 103.910819][T10241] ? bit_clear+0x530/0x530 [ 103.910825][T10241] ? find_held_lock+0x35/0x130 [ 103.910836][T10241] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 103.910842][T10241] ? get_color+0x225/0x430 [ 103.910850][T10241] fbcon_cursor+0x487/0x660 [ 103.910857][T10241] ? bit_clear+0x530/0x530 [ 103.910865][T10241] hide_cursor+0x9d/0x2b0 [ 103.910872][T10241] redraw_screen+0x60b/0x7d0 [ 103.910879][T10241] ? respond_string+0x2c0/0x2c0 [ 103.910888][T10241] vc_do_resize+0x10c9/0x1460 [ 103.910895][T10241] ? down+0x50/0x90 [ 103.910905][T10241] ? vc_uniscr_alloc+0xd0/0xd0 [ 103.910912][T10241] ? lock_acquire+0x190/0x410 [ 103.910919][T10241] ? vt_ioctl+0x1f56/0x26d0 [ 103.910926][T10241] vc_resize+0x4d/0x60 [ 103.910933][T10241] vt_ioctl+0x2076/0x26d0 [ 103.910941][T10241] ? complete_change_console+0x3a0/0x3a0 [ 103.910947][T10241] ? lock_downgrade+0x920/0x920 [ 103.910955][T10241] ? rwlock_bug.part.0+0x90/0x90 [ 103.910963][T10241] ? tomoyo_path_number_perm+0x214/0x520 [ 103.910969][T10241] ? find_held_lock+0x35/0x130 [ 103.910977][T10241] ? tomoyo_path_number_perm+0x214/0x520 [ 103.910985][T10241] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 103.910993][T10241] ? tty_jobctrl_ioctl+0x50/0xd40 [ 103.911000][T10241] ? complete_change_console+0x3a0/0x3a0 [ 103.911007][T10241] tty_ioctl+0xa37/0x14f0 [ 103.911016][T10241] ? tty_vhangup+0x30/0x30 [ 103.911023][T10241] ? tomoyo_path_number_perm+0x454/0x520 [ 103.911032][T10241] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 103.911039][T10241] ? tomoyo_path_number_perm+0x25e/0x520 [ 103.911048][T10241] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 103.911057][T10241] ? ___might_sleep+0x163/0x2c0 [ 103.911067][T10241] ? tty_vhangup+0x30/0x30 [ 103.911074][T10241] do_vfs_ioctl+0x977/0x14e0 [ 103.911082][T10241] ? compat_ioctl_preallocate+0x220/0x220 [ 103.911090][T10241] ? selinux_file_mprotect+0x620/0x620 [ 103.911097][T10241] ? kmem_cache_free+0x26b/0x320 [ 103.911104][T10241] ? putname+0xf4/0x130 [ 103.911111][T10241] ? do_sys_open+0x31d/0x5d0 [ 103.911120][T10241] ? tomoyo_file_ioctl+0x23/0x30 [ 103.911128][T10241] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 103.911135][T10241] ? security_file_ioctl+0x8d/0xc0 [ 103.911142][T10241] ksys_ioctl+0xab/0xd0 [ 103.911150][T10241] __x64_sys_ioctl+0x73/0xb0 [ 103.911158][T10241] do_syscall_64+0xfa/0x790 [ 103.911167][T10241] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.911171][T10241] RIP: 0033:0x440249 [ 103.911178][T10241] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 103.911182][T10241] RSP: 002b:00007ffe11ca0a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 103.911193][T10241] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440249 [ 103.911197][T10241] RDX: 0000000020000000 RSI: 000000000000560a RDI: 0000000000000004 [ 103.911201][T10241] RBP: 00000000006cb018 R08: 000000000000000d R09: 00000000004002c8 [ 103.911205][T10241] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b30 [ 103.911209][T10241] R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000 [ 103.912571][T10241] Kernel Offset: disabled [ 104.989610][T10241] Rebooting in 86400 seconds..