Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts. executing program [ 83.865297][ T27] audit: type=1400 audit(1576507917.868:42): avc: denied { map } for pid=9678 comm="syz-executor602" path="/root/syz-executor602663553" 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 [ 83.950813][ T9678] ================================================================== [ 83.950856][ T9678] BUG: KASAN: global-out-of-bounds in vga16fb_imageblit+0x1c8b/0x2200 [ 83.950864][ T9678] Read of size 2 at addr ffffffff8875111e by task syz-executor602/9678 [ 83.950866][ T9678] [ 83.950877][ T9678] CPU: 0 PID: 9678 Comm: syz-executor602 Not tainted 5.5.0-rc1-syzkaller #0 [ 83.950882][ T9678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.950885][ T9678] Call Trace: [ 83.950897][ T9678] dump_stack+0x197/0x210 [ 83.950905][ T9678] ? vga16fb_imageblit+0x1c8b/0x2200 [ 83.950917][ T9678] print_address_description.constprop.0.cold+0x5/0x30b [ 83.950923][ T9678] ? vga16fb_imageblit+0x1c8b/0x2200 [ 83.950931][ T9678] ? vga16fb_imageblit+0x1c8b/0x2200 [ 83.950938][ T9678] __kasan_report.cold+0x1b/0x41 [ 83.950947][ T9678] ? vga16fb_imageblit+0x1c8b/0x2200 [ 83.950956][ T9678] kasan_report+0x12/0x20 [ 83.950964][ T9678] __asan_report_load2_noabort+0x14/0x20 [ 83.950971][ T9678] vga16fb_imageblit+0x1c8b/0x2200 [ 83.950980][ T9678] ? mark_lock+0xdf/0x1220 [ 83.950994][ T9678] soft_cursor+0x4fb/0xa30 [ 83.951001][ T9678] ? lockdep_hardirqs_on+0x421/0x5e0 [ 83.951014][ T9678] bit_cursor+0x12fc/0x1a60 [ 83.951026][ T9678] ? bit_clear+0x530/0x530 [ 83.951035][ T9678] ? fbcon_putcs+0x33c/0x3e0 [ 83.951042][ T9678] ? fbcon_putcs+0x343/0x3e0 [ 83.951057][ T9678] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 83.951066][ T9678] ? get_color+0x225/0x430 [ 83.951075][ T9678] fbcon_cursor+0x487/0x660 [ 83.951081][ T9678] ? bit_clear+0x530/0x530 [ 83.951093][ T9678] set_cursor+0x1fb/0x280 [ 83.951102][ T9678] redraw_screen+0x4e1/0x7d0 [ 83.951108][ T9678] ? efifb_probe.cold+0x181f/0x181f [ 83.951117][ T9678] ? respond_string+0x2c0/0x2c0 [ 83.951127][ T9678] ? fbcon_set_palette+0x3c4/0x4a0 [ 83.951138][ T9678] fbcon_modechanged+0x5c3/0x790 [ 83.951149][ T9678] fbcon_update_vcs+0x42/0x50 [ 83.951157][ T9678] fb_set_var+0xb32/0xdd0 [ 83.951166][ T9678] ? fb_blank+0x1a0/0x1a0 [ 83.951174][ T9678] ? lock_acquire+0x190/0x410 [ 83.951186][ T9678] ? __mutex_lock+0x458/0x13c0 [ 83.951194][ T9678] ? down+0x70/0x90 [ 83.951213][ T9678] ? do_fb_ioctl+0x335/0x7d0 [ 83.951226][ T9678] do_fb_ioctl+0x390/0x7d0 [ 83.951234][ T9678] ? fb_mmap+0x520/0x520 [ 83.951242][ T9678] ? tomoyo_path_number_perm+0x214/0x520 [ 83.951250][ T9678] ? find_held_lock+0x35/0x130 [ 83.951258][ T9678] ? tomoyo_path_number_perm+0x214/0x520 [ 83.951269][ T9678] ? lock_downgrade+0x920/0x920 [ 83.951276][ T9678] ? lockdep_hardirqs_on+0x421/0x5e0 [ 83.951286][ T9678] ? tomoyo_path_number_perm+0x454/0x520 [ 83.951306][ T9678] ? ___might_sleep+0x163/0x2c0 [ 83.951317][ T9678] fb_ioctl+0xe6/0x130 [ 83.951323][ T9678] ? do_fb_ioctl+0x7d0/0x7d0 [ 83.951332][ T9678] do_vfs_ioctl+0x977/0x14e0 [ 83.951342][ T9678] ? compat_ioctl_preallocate+0x220/0x220 [ 83.951350][ T9678] ? selinux_file_mprotect+0x620/0x620 [ 83.951358][ T9678] ? kmem_cache_free+0x26b/0x320 [ 83.951370][ T9678] ? do_sys_open+0x31d/0x5d0 [ 83.951380][ T9678] ? tomoyo_file_ioctl+0x23/0x30 [ 83.951389][ T9678] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.951397][ T9678] ? security_file_ioctl+0x8d/0xc0 [ 83.951410][ T9678] ksys_ioctl+0xab/0xd0 [ 83.951420][ T9678] __x64_sys_ioctl+0x73/0xb0 [ 83.951430][ T9678] do_syscall_64+0xfa/0x790 [ 83.951441][ T9678] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.951448][ T9678] RIP: 0033:0x440309 [ 83.951458][ T9678] 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 [ 83.951462][ T9678] RSP: 002b:00007ffd48484408 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 83.951470][ T9678] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 83.951475][ T9678] RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003 [ 83.951480][ T9678] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 83.951485][ T9678] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b90 [ 83.951489][ T9678] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 83.951499][ T9678] [ 83.951502][ T9678] The buggy address belongs to the variable: [ 83.951511][ T9678] transl_h+0x3e/0x40 [ 83.951513][ T9678] [ 83.951516][ T9678] Memory state around the buggy address: [ 83.951523][ T9678] ffffffff88751000: 00 00 00 00 fa fa fa fa 00 00 00 00 00 fa fa fa [ 83.951529][ T9678] ffffffff88751080: fa fa fa fa 04 fa fa fa fa fa fa fa 00 00 00 00 [ 83.951535][ T9678] >ffffffff88751100: fa fa fa fa 00 00 00 00 fa fa fa fa 00 01 fa fa [ 83.951538][ T9678] ^ [ 83.951544][ T9678] ffffffff88751180: fa fa fa fa 00 00 00 04 fa fa fa fa 00 00 04 fa [ 83.951550][ T9678] ffffffff88751200: fa fa fa fa 00 00 00 00 00 00 02 fa fa fa fa fa [ 83.951553][ T9678] ================================================================== [ 83.951556][ T9678] Disabling lock debugging due to kernel taint [ 83.951560][ T9678] Kernel panic - not syncing: panic_on_warn set ... [ 83.951569][ T9678] CPU: 0 PID: 9678 Comm: syz-executor602 Tainted: G B 5.5.0-rc1-syzkaller #0 [ 83.951572][ T9678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.951574][ T9678] Call Trace: [ 83.951581][ T9678] dump_stack+0x197/0x210 [ 83.951590][ T9678] panic+0x2e3/0x75c [ 83.951597][ T9678] ? add_taint.cold+0x16/0x16 [ 83.951608][ T9678] ? trace_hardirqs_on+0x67/0x240 [ 83.951615][ T9678] ? trace_hardirqs_on+0x5e/0x240 [ 83.951622][ T9678] ? vga16fb_imageblit+0x1c8b/0x2200 [ 83.951628][ T9678] end_report+0x47/0x4f [ 83.951634][ T9678] ? vga16fb_imageblit+0x1c8b/0x2200 [ 83.951641][ T9678] __kasan_report.cold+0xe/0x41 [ 83.951648][ T9678] ? vga16fb_imageblit+0x1c8b/0x2200 [ 83.951655][ T9678] kasan_report+0x12/0x20 [ 83.951663][ T9678] __asan_report_load2_noabort+0x14/0x20 [ 83.951669][ T9678] vga16fb_imageblit+0x1c8b/0x2200 [ 83.951675][ T9678] ? mark_lock+0xdf/0x1220 [ 83.951684][ T9678] soft_cursor+0x4fb/0xa30 [ 83.951690][ T9678] ? lockdep_hardirqs_on+0x421/0x5e0 [ 83.951699][ T9678] bit_cursor+0x12fc/0x1a60 [ 83.951707][ T9678] ? bit_clear+0x530/0x530 [ 83.951714][ T9678] ? fbcon_putcs+0x33c/0x3e0 [ 83.951721][ T9678] ? fbcon_putcs+0x343/0x3e0 [ 83.951731][ T9678] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 83.951738][ T9678] ? get_color+0x225/0x430 [ 83.951745][ T9678] fbcon_cursor+0x487/0x660 [ 83.951751][ T9678] ? bit_clear+0x530/0x530 [ 83.951758][ T9678] set_cursor+0x1fb/0x280 [ 83.951766][ T9678] redraw_screen+0x4e1/0x7d0 [ 83.951772][ T9678] ? efifb_probe.cold+0x181f/0x181f [ 83.951779][ T9678] ? respond_string+0x2c0/0x2c0 [ 83.951787][ T9678] ? fbcon_set_palette+0x3c4/0x4a0 [ 83.951796][ T9678] fbcon_modechanged+0x5c3/0x790 [ 83.951805][ T9678] fbcon_update_vcs+0x42/0x50 [ 83.951811][ T9678] fb_set_var+0xb32/0xdd0 [ 83.951818][ T9678] ? fb_blank+0x1a0/0x1a0 [ 83.951825][ T9678] ? lock_acquire+0x190/0x410 [ 83.951833][ T9678] ? __mutex_lock+0x458/0x13c0 [ 83.951839][ T9678] ? down+0x70/0x90 [ 83.951851][ T9678] ? do_fb_ioctl+0x335/0x7d0 [ 83.951860][ T9678] do_fb_ioctl+0x390/0x7d0 [ 83.951867][ T9678] ? fb_mmap+0x520/0x520 [ 83.951873][ T9678] ? tomoyo_path_number_perm+0x214/0x520 [ 83.951879][ T9678] ? find_held_lock+0x35/0x130 [ 83.951886][ T9678] ? tomoyo_path_number_perm+0x214/0x520 [ 83.951894][ T9678] ? lock_downgrade+0x920/0x920 [ 83.951901][ T9678] ? lockdep_hardirqs_on+0x421/0x5e0 [ 83.951909][ T9678] ? tomoyo_path_number_perm+0x454/0x520 [ 83.951920][ T9678] ? ___might_sleep+0x163/0x2c0 [ 83.951928][ T9678] fb_ioctl+0xe6/0x130 [ 83.951934][ T9678] ? do_fb_ioctl+0x7d0/0x7d0 [ 83.951941][ T9678] do_vfs_ioctl+0x977/0x14e0 [ 83.951949][ T9678] ? compat_ioctl_preallocate+0x220/0x220 [ 83.951955][ T9678] ? selinux_file_mprotect+0x620/0x620 [ 83.951962][ T9678] ? kmem_cache_free+0x26b/0x320 [ 83.951970][ T9678] ? do_sys_open+0x31d/0x5d0 [ 83.951978][ T9678] ? tomoyo_file_ioctl+0x23/0x30 [ 83.951985][ T9678] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.951991][ T9678] ? security_file_ioctl+0x8d/0xc0 [ 83.951998][ T9678] ksys_ioctl+0xab/0xd0 [ 83.952005][ T9678] __x64_sys_ioctl+0x73/0xb0 [ 83.952013][ T9678] do_syscall_64+0xfa/0x790 [ 83.952021][ T9678] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.952026][ T9678] RIP: 0033:0x440309 [ 83.952032][ T9678] 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 [ 83.952036][ T9678] RSP: 002b:00007ffd48484408 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 83.952043][ T9678] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440309 [ 83.952047][ T9678] RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003 [ 83.952051][ T9678] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 83.952055][ T9678] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b90 [ 83.952059][ T9678] R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000 [ 83.953486][ T9678] Kernel Offset: disabled [ 84.824487][ T9678] Rebooting in 86400 seconds..