[ 42.557692] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.110' (ECDSA) to the list of known hosts. [ 48.137310] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 48.255077] audit: type=1400 audit(1576714386.432:36): avc: denied { map } for pid=7074 comm="syz-executor337" path="/root/syz-executor337776476" 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 [ 48.485906] ================================================================== [ 48.485926] BUG: KASAN: global-out-of-bounds in bit_putcs+0xc09/0xdb0 [ 48.485932] Read of size 1 at addr ffffffff87065680 by task syz-executor337/7074 [ 48.485933] [ 48.485940] CPU: 0 PID: 7074 Comm: syz-executor337 Not tainted 4.14.159-syzkaller #0 [ 48.485943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.485945] Call Trace: [ 48.485953] dump_stack+0x142/0x197 [ 48.485959] ? bit_putcs+0xc09/0xdb0 [ 48.485967] print_address_description.cold+0x5/0x1dc [ 48.485972] ? bit_putcs+0xc09/0xdb0 [ 48.485976] kasan_report.cold+0xa9/0x2af [ 48.485982] __asan_report_load1_noabort+0x14/0x20 [ 48.485986] bit_putcs+0xc09/0xdb0 [ 48.485991] ? memcpy+0x46/0x50 [ 48.486002] ? update_attr.isra.0+0x160/0x160 [ 48.486009] ? update_attr.isra.0+0x160/0x160 [ 48.486013] ? fb_get_color_depth+0x5f/0x70 [ 48.486019] ? update_attr.isra.0+0x160/0x160 [ 48.486023] fbcon_putcs+0x3c2/0x480 [ 48.486032] do_update_region+0x2c6/0x650 [ 48.486040] ? con_get_trans_old+0x230/0x230 [ 48.486044] ? fbcon_set_palette+0x203/0x5b0 [ 48.486048] ? fbcon_redraw.isra.0+0x440/0x440 [ 48.486055] redraw_screen+0x589/0x7c0 [ 48.486060] ? con_flush_chars+0x90/0x90 [ 48.486066] ? mutex_unlock+0xd/0x10 [ 48.486071] ? tty_do_resize+0x43/0x160 [ 48.486076] vc_do_resize+0xc8a/0xec0 [ 48.486085] ? vt_console_print+0xf70/0xf70 [ 48.486092] ? lock_acquire+0x16f/0x430 [ 48.486096] ? vt_ioctl+0xfa9/0x2170 [ 48.486102] vc_resize+0x4d/0x60 [ 48.486106] vt_ioctl+0x10a8/0x2170 [ 48.486113] ? complete_change_console+0x360/0x360 [ 48.486119] ? avc_ss_reset+0x110/0x110 [ 48.486123] ? kasan_slab_free+0x75/0xc0 [ 48.486129] ? SyS_open+0x2d/0x40 [ 48.486134] ? do_syscall_64+0x1e8/0x640 [ 48.486139] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 48.486144] ? find_held_lock+0x35/0x130 [ 48.486150] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 48.486155] ? tty_jobctrl_ioctl+0x44/0xc10 [ 48.486159] ? complete_change_console+0x360/0x360 [ 48.486164] tty_ioctl+0x841/0x1320 [ 48.486169] ? tty_vhangup+0x30/0x30 [ 48.486179] ? __might_sleep+0x93/0xb0 [ 48.486187] ? tty_vhangup+0x30/0x30 [ 48.486194] do_vfs_ioctl+0x7ae/0x1060 [ 48.486200] ? selinux_file_mprotect+0x5d0/0x5d0 [ 48.486205] ? ioctl_preallocate+0x1c0/0x1c0 [ 48.486210] ? putname+0xe0/0x120 [ 48.486215] ? do_sys_open+0x221/0x430 [ 48.486224] ? security_file_ioctl+0x7d/0xb0 [ 48.486227] ? security_file_ioctl+0x89/0xb0 [ 48.486233] SyS_ioctl+0x8f/0xc0 [ 48.486238] ? do_vfs_ioctl+0x1060/0x1060 [ 48.486243] do_syscall_64+0x1e8/0x640 [ 48.486248] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.486255] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 48.486260] RIP: 0033:0x443f89 [ 48.486262] RSP: 002b:00007ffd273c5f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.486268] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443f89 [ 48.486271] RDX: 0000000020000000 RSI: 000000000000560a RDI: 0000000000000004 [ 48.486274] RBP: 00000000006cf018 R08: 0000000000000000 R09: 00000000004002e0 [ 48.486277] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c90 [ 48.486279] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000 [ 48.486287] [ 48.486289] The buggy address belongs to the variable: [ 48.486294] oid_index+0x600/0x9a0 [ 48.486295] [ 48.486297] Memory state around the buggy address: [ 48.486301] ffffffff87065580: fa fa fa fa 00 00 00 00 fa fa fa fa 00 00 00 fa [ 48.486305] ffffffff87065600: fa fa fa fa 00 00 00 00 fa fa fa fa 04 fa fa fa [ 48.486308] >ffffffff87065680: fa fa fa fa 00 01 fa fa fa fa fa fa 04 fa fa fa [ 48.486310] ^ [ 48.486313] ffffffff87065700: fa fa fa fa 04 fa fa fa fa fa fa fa 07 fa fa fa [ 48.486316] ffffffff87065780: fa fa fa fa 04 fa fa fa fa fa fa fa 05 fa fa fa [ 48.486318] ================================================================== [ 48.486320] Disabling lock debugging due to kernel taint [ 48.486323] Kernel panic - not syncing: panic_on_warn set ... [ 48.486323] [ 48.486327] CPU: 0 PID: 7074 Comm: syz-executor337 Tainted: G B 4.14.159-syzkaller #0 [ 48.486329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.486331] Call Trace: [ 48.486335] dump_stack+0x142/0x197 [ 48.486339] ? bit_putcs+0xc09/0xdb0 [ 48.486343] panic+0x1f9/0x42d [ 48.486347] ? add_taint.cold+0x16/0x16 [ 48.486351] ? lock_downgrade+0x740/0x740 [ 48.486357] kasan_end_report+0x47/0x4f [ 48.486361] kasan_report.cold+0x130/0x2af [ 48.486366] __asan_report_load1_noabort+0x14/0x20 [ 48.486369] bit_putcs+0xc09/0xdb0 [ 48.486373] ? memcpy+0x46/0x50 [ 48.486380] ? update_attr.isra.0+0x160/0x160 [ 48.486385] ? update_attr.isra.0+0x160/0x160 [ 48.486389] ? fb_get_color_depth+0x5f/0x70 [ 48.486393] ? update_attr.isra.0+0x160/0x160 [ 48.486397] fbcon_putcs+0x3c2/0x480 [ 48.486402] do_update_region+0x2c6/0x650 [ 48.486408] ? con_get_trans_old+0x230/0x230 [ 48.486411] ? fbcon_set_palette+0x203/0x5b0 [ 48.486415] ? fbcon_redraw.isra.0+0x440/0x440 [ 48.486420] redraw_screen+0x589/0x7c0 [ 48.486424] ? con_flush_chars+0x90/0x90 [ 48.486427] ? mutex_unlock+0xd/0x10 [ 48.486431] ? tty_do_resize+0x43/0x160 [ 48.486435] vc_do_resize+0xc8a/0xec0 [ 48.486440] ? vt_console_print+0xf70/0xf70 [ 48.486444] ? lock_acquire+0x16f/0x430 [ 48.486448] ? vt_ioctl+0xfa9/0x2170 [ 48.486452] vc_resize+0x4d/0x60 [ 48.486456] vt_ioctl+0x10a8/0x2170 [ 48.486461] ? complete_change_console+0x360/0x360 [ 48.486464] ? avc_ss_reset+0x110/0x110 [ 48.486468] ? kasan_slab_free+0x75/0xc0 [ 48.486472] ? SyS_open+0x2d/0x40 [ 48.486475] ? do_syscall_64+0x1e8/0x640 [ 48.486479] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 48.486483] ? find_held_lock+0x35/0x130 [ 48.486487] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 48.486490] ? tty_jobctrl_ioctl+0x44/0xc10 [ 48.486494] ? complete_change_console+0x360/0x360 [ 48.486498] tty_ioctl+0x841/0x1320 [ 48.486502] ? tty_vhangup+0x30/0x30 [ 48.486508] ? __might_sleep+0x93/0xb0 [ 48.486514] ? tty_vhangup+0x30/0x30 [ 48.486517] do_vfs_ioctl+0x7ae/0x1060 [ 48.486522] ? selinux_file_mprotect+0x5d0/0x5d0 [ 48.486526] ? ioctl_preallocate+0x1c0/0x1c0 [ 48.486529] ? putname+0xe0/0x120 [ 48.486534] ? do_sys_open+0x221/0x430 [ 48.486539] ? security_file_ioctl+0x7d/0xb0 [ 48.486542] ? security_file_ioctl+0x89/0xb0 [ 48.486547] SyS_ioctl+0x8f/0xc0 [ 48.486551] ? do_vfs_ioctl+0x1060/0x1060 [ 48.486555] do_syscall_64+0x1e8/0x640 [ 48.486559] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.486564] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 48.486567] RIP: 0033:0x443f89 [ 48.486569] RSP: 002b:00007ffd273c5f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.486573] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443f89 [ 48.486575] RDX: 0000000020000000 RSI: 000000000000560a RDI: 0000000000000004 [ 48.486577] RBP: 00000000006cf018 R08: 0000000000000000 R09: 00000000004002e0 [ 48.486579] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c90 [ 48.486582] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000 [ 48.487404] Kernel Offset: disabled [ 49.173222] Rebooting in 86400 seconds..