Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts. executing program [ 82.463123][ T9281] ================================================================== [ 82.463173][ T9281] BUG: KASAN: global-out-of-bounds in vga16fb_imageblit+0x1c8b/0x2200 [ 82.463181][ T9281] Read of size 2 at addr ffffffff8874d45e by task syz-executor402/9281 [ 82.463183][ T9281] [ 82.463193][ T9281] CPU: 0 PID: 9281 Comm: syz-executor402 Not tainted 5.4.0-syzkaller #0 [ 82.463199][ T9281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.463202][ T9281] Call Trace: [ 82.463216][ T9281] dump_stack+0x197/0x210 [ 82.463224][ T9281] ? vga16fb_imageblit+0x1c8b/0x2200 [ 82.463236][ T9281] print_address_description.constprop.0.cold+0x5/0x30b [ 82.463244][ T9281] ? vga16fb_imageblit+0x1c8b/0x2200 [ 82.463252][ T9281] ? vga16fb_imageblit+0x1c8b/0x2200 [ 82.463260][ T9281] __kasan_report.cold+0x1b/0x41 [ 82.463270][ T9281] ? vga16fb_imageblit+0x1c8b/0x2200 [ 82.463278][ T9281] kasan_report+0x12/0x20 [ 82.463287][ T9281] __asan_report_load2_noabort+0x14/0x20 [ 82.463295][ T9281] vga16fb_imageblit+0x1c8b/0x2200 [ 82.463304][ T9281] ? mark_lock+0x11f/0x1220 [ 82.463319][ T9281] soft_cursor+0x4fb/0xa30 [ 82.463327][ T9281] ? lockdep_hardirqs_on+0x421/0x5e0 [ 82.463340][ T9281] bit_cursor+0x12fc/0x1a60 [ 82.463353][ T9281] ? bit_clear+0x530/0x530 [ 82.463361][ T9281] ? fbcon_putcs+0x33c/0x3e0 [ 82.463368][ T9281] ? fbcon_putcs+0x343/0x3e0 [ 82.463384][ T9281] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 82.463392][ T9281] ? get_color+0x225/0x430 [ 82.463402][ T9281] fbcon_cursor+0x487/0x660 [ 82.463409][ T9281] ? bit_clear+0x530/0x530 [ 82.463421][ T9281] set_cursor+0x1fb/0x280 [ 82.463429][ T9281] redraw_screen+0x4e1/0x7d0 [ 82.463436][ T9281] ? efifb_probe.cold+0x181f/0x181f [ 82.463444][ T9281] ? respond_string+0x2c0/0x2c0 [ 82.463454][ T9281] ? fbcon_set_palette+0x3c4/0x4a0 [ 82.463464][ T9281] fbcon_modechanged+0x5c3/0x790 [ 82.463476][ T9281] fbcon_update_vcs+0x42/0x50 [ 82.463483][ T9281] fb_set_var+0xb32/0xdd0 [ 82.463491][ T9281] ? fb_blank+0x1a0/0x1a0 [ 82.463499][ T9281] ? lock_acquire+0x190/0x410 [ 82.463513][ T9281] ? __mutex_lock+0x458/0x13c0 [ 82.463521][ T9281] ? down+0x50/0x90 [ 82.463540][ T9281] ? do_fb_ioctl+0x335/0x7d0 [ 82.463552][ T9281] do_fb_ioctl+0x390/0x7d0 [ 82.463559][ T9281] ? fb_mmap+0x520/0x520 [ 82.463567][ T9281] ? tomoyo_path_number_perm+0x214/0x520 [ 82.463576][ T9281] ? find_held_lock+0x35/0x130 [ 82.463584][ T9281] ? tomoyo_path_number_perm+0x214/0x520 [ 82.463595][ T9281] ? lock_downgrade+0x920/0x920 [ 82.463602][ T9281] ? lockdep_hardirqs_on+0x421/0x5e0 [ 82.463612][ T9281] ? tomoyo_path_number_perm+0x454/0x520 [ 82.463634][ T9281] fb_ioctl+0xe6/0x130 [ 82.463640][ T9281] ? do_fb_ioctl+0x7d0/0x7d0 [ 82.463649][ T9281] do_vfs_ioctl+0x977/0x14e0 [ 82.463659][ T9281] ? compat_ioctl_preallocate+0x220/0x220 [ 82.463668][ T9281] ? kmem_cache_free+0x26b/0x320 [ 82.463678][ T9281] ? putname+0xf4/0x130 [ 82.463687][ T9281] ? do_sys_open+0x31d/0x5d0 [ 82.463697][ T9281] ? tomoyo_file_ioctl+0x23/0x30 [ 82.463705][ T9281] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.463716][ T9281] ? security_file_ioctl+0x8d/0xc0 [ 82.463725][ T9281] ksys_ioctl+0xab/0xd0 [ 82.463734][ T9281] __x64_sys_ioctl+0x73/0xb0 [ 82.463745][ T9281] do_syscall_64+0xfa/0x790 [ 82.463756][ T9281] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.463763][ T9281] RIP: 0033:0x440309 [ 82.463774][ T9281] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.463778][ T9281] RSP: 002b:00007fffcda2eba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 82.463786][ T9281] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 82.463791][ T9281] RDX: 0000000020000340 RSI: 0000000000004601 RDI: 0000000000000003 [ 82.463796][ T9281] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 82.463801][ T9281] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b90 [ 82.463805][ T9281] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 82.463816][ T9281] [ 82.463818][ T9281] The buggy address belongs to the variable: [ 82.463826][ T9281] transl_h+0x3e/0x40 [ 82.463828][ T9281] [ 82.463830][ T9281] Memory state around the buggy address: [ 82.463837][ T9281] ffffffff8874d300: 00 00 00 00 fa fa fa fa 00 00 00 00 fa fa fa fa [ 82.463844][ T9281] ffffffff8874d380: 00 00 00 00 00 fa fa fa fa fa fa fa 04 fa fa fa [ 82.463849][ T9281] >ffffffff8874d400: fa fa fa fa 00 00 00 00 fa fa fa fa 00 00 00 00 [ 82.463853][ T9281] ^ [ 82.463859][ T9281] ffffffff8874d480: fa fa fa fa 00 01 fa fa fa fa fa fa 00 00 00 04 [ 82.463864][ T9281] ffffffff8874d500: fa fa fa fa 00 00 04 fa fa fa fa fa 00 00 00 00 [ 82.463867][ T9281] ================================================================== [ 82.463870][ T9281] Disabling lock debugging due to kernel taint [ 82.463875][ T9281] Kernel panic - not syncing: panic_on_warn set ... [ 82.463883][ T9281] CPU: 0 PID: 9281 Comm: syz-executor402 Tainted: G B 5.4.0-syzkaller #0 [ 82.463887][ T9281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.463889][ T9281] Call Trace: [ 82.463896][ T9281] dump_stack+0x197/0x210 [ 82.463905][ T9281] panic+0x2e3/0x75c [ 82.463912][ T9281] ? add_taint.cold+0x16/0x16 [ 82.463923][ T9281] ? trace_hardirqs_on+0x67/0x240 [ 82.463930][ T9281] ? trace_hardirqs_on+0x5e/0x240 [ 82.463938][ T9281] ? vga16fb_imageblit+0x1c8b/0x2200 [ 82.463944][ T9281] end_report+0x47/0x4f [ 82.463951][ T9281] ? vga16fb_imageblit+0x1c8b/0x2200 [ 82.463958][ T9281] __kasan_report.cold+0xe/0x41 [ 82.463966][ T9281] ? vga16fb_imageblit+0x1c8b/0x2200 [ 82.463973][ T9281] kasan_report+0x12/0x20 [ 82.463980][ T9281] __asan_report_load2_noabort+0x14/0x20 [ 82.463988][ T9281] vga16fb_imageblit+0x1c8b/0x2200 [ 82.463994][ T9281] ? mark_lock+0x11f/0x1220 [ 82.464004][ T9281] soft_cursor+0x4fb/0xa30 [ 82.464010][ T9281] ? lockdep_hardirqs_on+0x421/0x5e0 [ 82.464020][ T9281] bit_cursor+0x12fc/0x1a60 [ 82.464030][ T9281] ? bit_clear+0x530/0x530 [ 82.464036][ T9281] ? fbcon_putcs+0x33c/0x3e0 [ 82.464042][ T9281] ? fbcon_putcs+0x343/0x3e0 [ 82.464053][ T9281] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 82.464060][ T9281] ? get_color+0x225/0x430 [ 82.464068][ T9281] fbcon_cursor+0x487/0x660 [ 82.464075][ T9281] ? bit_clear+0x530/0x530 [ 82.464083][ T9281] set_cursor+0x1fb/0x280 [ 82.464090][ T9281] redraw_screen+0x4e1/0x7d0 [ 82.464097][ T9281] ? efifb_probe.cold+0x181f/0x181f [ 82.464104][ T9281] ? respond_string+0x2c0/0x2c0 [ 82.464111][ T9281] ? fbcon_set_palette+0x3c4/0x4a0 [ 82.464119][ T9281] fbcon_modechanged+0x5c3/0x790 [ 82.464133][ T9281] fbcon_update_vcs+0x42/0x50 [ 82.464139][ T9281] fb_set_var+0xb32/0xdd0 [ 82.464146][ T9281] ? fb_blank+0x1a0/0x1a0 [ 82.464152][ T9281] ? lock_acquire+0x190/0x410 [ 82.464161][ T9281] ? __mutex_lock+0x458/0x13c0 [ 82.464167][ T9281] ? down+0x50/0x90 [ 82.464179][ T9281] ? do_fb_ioctl+0x335/0x7d0 [ 82.464187][ T9281] do_fb_ioctl+0x390/0x7d0 [ 82.464193][ T9281] ? fb_mmap+0x520/0x520 [ 82.464200][ T9281] ? tomoyo_path_number_perm+0x214/0x520 [ 82.464207][ T9281] ? find_held_lock+0x35/0x130 [ 82.464214][ T9281] ? tomoyo_path_number_perm+0x214/0x520 [ 82.464222][ T9281] ? lock_downgrade+0x920/0x920 [ 82.464228][ T9281] ? lockdep_hardirqs_on+0x421/0x5e0 [ 82.464236][ T9281] ? tomoyo_path_number_perm+0x454/0x520 [ 82.464249][ T9281] fb_ioctl+0xe6/0x130 [ 82.464255][ T9281] ? do_fb_ioctl+0x7d0/0x7d0 [ 82.464261][ T9281] do_vfs_ioctl+0x977/0x14e0 [ 82.464269][ T9281] ? compat_ioctl_preallocate+0x220/0x220 [ 82.464276][ T9281] ? kmem_cache_free+0x26b/0x320 [ 82.464284][ T9281] ? putname+0xf4/0x130 [ 82.464290][ T9281] ? do_sys_open+0x31d/0x5d0 [ 82.464298][ T9281] ? tomoyo_file_ioctl+0x23/0x30 [ 82.464306][ T9281] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.464313][ T9281] ? security_file_ioctl+0x8d/0xc0 [ 82.464320][ T9281] ksys_ioctl+0xab/0xd0 [ 82.464328][ T9281] __x64_sys_ioctl+0x73/0xb0 [ 82.464336][ T9281] do_syscall_64+0xfa/0x790 [ 82.464344][ T9281] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.464349][ T9281] RIP: 0033:0x440309 [ 82.464356][ T9281] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.464359][ T9281] RSP: 002b:00007fffcda2eba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 82.464366][ T9281] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 82.464370][ T9281] RDX: 0000000020000340 RSI: 0000000000004601 RDI: 0000000000000003 [ 82.464374][ T9281] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 82.464378][ T9281] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b90 [ 82.464382][ T9281] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 82.466434][ T9281] Kernel Offset: disabled [ 83.428205][ T9281] Rebooting in 86400 seconds..