Warning: Permanently added '10.128.10.55' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 184.575025] ================================================================== [ 184.582728] BUG: KASAN: use-after-free in vgem_gem_dumb_create+0x22c/0x240 [ 184.589767] Read of size 8 at addr ffff8880aa495e00 by task syz-executor638/16333 [ 184.597405] [ 184.599122] CPU: 1 PID: 16333 Comm: syz-executor638 Not tainted 4.19.190-syzkaller #0 [ 184.607095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 184.616449] Call Trace: [ 184.619045] dump_stack+0x1fc/0x2ef [ 184.622713] print_address_description.cold+0x54/0x219 [ 184.628003] kasan_report_error.cold+0x8a/0x1b9 [ 184.632747] ? vgem_gem_dumb_create+0x22c/0x240 [ 184.637429] __asan_report_load8_noabort+0x88/0x90 [ 184.642384] ? drm_gem_object_put_unlocked+0x60/0x180 [ 184.647584] ? vgem_gem_dumb_create+0x22c/0x240 [ 184.652273] vgem_gem_dumb_create+0x22c/0x240 [ 184.656791] drm_mode_create_dumb+0x27c/0x300 [ 184.661299] drm_ioctl_kernel+0x208/0x2a0 [ 184.665450] ? drm_mode_create_dumb+0x300/0x300 [ 184.670131] ? drm_ioctl_permit+0x210/0x210 [ 184.674474] ? __might_fault+0x192/0x1d0 [ 184.678593] drm_ioctl+0x507/0x9c0 [ 184.682144] ? drm_mode_create_dumb+0x300/0x300 [ 184.686822] ? drm_getstats+0x20/0x20 [ 184.690634] ? signal_setup_done+0xdd/0x460 [ 184.694960] ? get_signal+0x1f70/0x1f70 [ 184.698936] ? futex_exit_release+0x220/0x220 [ 184.703432] ? drm_getstats+0x20/0x20 [ 184.707256] do_vfs_ioctl+0xcdb/0x12e0 [ 184.711144] ? lock_downgrade+0x720/0x720 [ 184.715290] ? check_preemption_disabled+0x41/0x280 [ 184.720300] ? ioctl_preallocate+0x200/0x200 [ 184.724705] ? __fget+0x356/0x510 [ 184.728156] ? do_dup2+0x450/0x450 [ 184.731694] ? __se_sys_futex+0x298/0x3b0 [ 184.735875] ksys_ioctl+0x9b/0xc0 [ 184.739327] __x64_sys_ioctl+0x6f/0xb0 [ 184.743215] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 184.747806] do_syscall_64+0xf9/0x620 [ 184.751607] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 184.756791] RIP: 0033:0x44a709 [ 184.759980] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 184.778889] RSP: 002b:00007f3e7ef711f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 184.786691] RAX: ffffffffffffffda RBX: 00000000004cb508 RCX: 000000000044a709 [ 184.793954] RDX: 00000000200000c0 RSI: 00000000c02064b2 RDI: 0000000000000005 [ 184.801230] RBP: 00000000004cb500 R08: 0000000000000000 R09: 0000000000000000 [ 184.808499] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb50c [ 184.815763] R13: 00007ffda55eea3f R14: 00007f3e7ef71300 R15: 0000000000022000 [ 184.823034] [ 184.824651] Allocated by task 16333: [ 184.828363] kmem_cache_alloc_trace+0x12f/0x380 [ 184.833028] __vgem_gem_create+0x44/0xf0 [ 184.837085] vgem_gem_dumb_create+0xcf/0x240 [ 184.841507] drm_mode_create_dumb+0x27c/0x300 [ 184.845997] drm_ioctl_kernel+0x208/0x2a0 [ 184.850153] drm_ioctl+0x507/0x9c0 [ 184.853692] do_vfs_ioctl+0xcdb/0x12e0 [ 184.857569] ksys_ioctl+0x9b/0xc0 [ 184.861021] __x64_sys_ioctl+0x6f/0xb0 [ 184.864899] do_syscall_64+0xf9/0x620 [ 184.868696] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 184.873871] [ 184.875487] Freed by task 16333: [ 184.878848] kfree+0xcc/0x210 [ 184.881949] drm_gem_object_free+0x91/0x1c0 [ 184.886267] drm_gem_object_put_unlocked+0xd1/0x180 [ 184.891279] vgem_gem_dumb_create+0x10c/0x240 [ 184.895767] drm_mode_create_dumb+0x27c/0x300 [ 184.900259] drm_ioctl_kernel+0x208/0x2a0 [ 184.904414] drm_ioctl+0x507/0x9c0 [ 184.907949] do_vfs_ioctl+0xcdb/0x12e0 [ 184.911830] ksys_ioctl+0x9b/0xc0 [ 184.915309] __x64_sys_ioctl+0x6f/0xb0 [ 184.919217] do_syscall_64+0xf9/0x620 [ 184.923025] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 184.928197] [ 184.929819] The buggy address belongs to the object at ffff8880aa495d00 [ 184.929819] which belongs to the cache kmalloc-512 of size 512 [ 184.942473] The buggy address is located 256 bytes inside of [ 184.942473] 512-byte region [ffff8880aa495d00, ffff8880aa495f00) [ 184.954335] The buggy address belongs to the page: [ 184.959264] page:ffffea0002a92540 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0 [ 184.967395] flags: 0xfff00000000100(slab) executing program executing program executing program executing program executing program [ 184.971542] raw: 00fff00000000100 ffffea0002a3d4c8 ffffea000293f888 ffff88813bff0940 [ 184.979469] raw: 0000000000000000 ffff8880aa495080 0000000100000006 0000000000000000 [ 184.987337] page dumped because: kasan: bad access detected [ 184.993033] [ 184.994647] Memory state around the buggy address: [ 184.999569] ffff8880aa495d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 185.006920] ffff8880aa495d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 185.014321] >ffff8880aa495e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 185.021667] ^ executing program executing program executing program executing program executing program [ 185.025026] ffff8880aa495e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 185.032376] ffff8880aa495f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 185.039745] ================================================================== [ 185.047091] Disabling lock debugging due to kernel taint executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 185.074064] Kernel panic - not syncing: panic_on_warn set ... [ 185.074064] [ 185.081490] CPU: 1 PID: 16333 Comm: syz-executor638 Tainted: G B 4.19.190-syzkaller #0 [ 185.090843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 185.100215] Call Trace: [ 185.102817] dump_stack+0x1fc/0x2ef [ 185.106464] panic+0x26a/0x50e [ 185.109661] ? __warn_printk+0xf3/0xf3 [ 185.113566] ? preempt_schedule_common+0x45/0xc0 [ 185.118342] ? ___preempt_schedule+0x16/0x18 [ 185.122768] ? trace_hardirqs_on+0x55/0x210 executing program executing program executing program executing program [ 185.127094] kasan_end_report+0x43/0x49 [ 185.131069] kasan_report_error.cold+0xa7/0x1b9 [ 185.135837] ? vgem_gem_dumb_create+0x22c/0x240 [ 185.140519] __asan_report_load8_noabort+0x88/0x90 [ 185.145456] ? drm_gem_object_put_unlocked+0x60/0x180 [ 185.150654] ? vgem_gem_dumb_create+0x22c/0x240 [ 185.155332] vgem_gem_dumb_create+0x22c/0x240 [ 185.159835] drm_mode_create_dumb+0x27c/0x300 [ 185.164335] drm_ioctl_kernel+0x208/0x2a0 [ 185.168486] ? drm_mode_create_dumb+0x300/0x300 [ 185.173161] ? drm_ioctl_permit+0x210/0x210 [ 185.177499] ? __might_fault+0x192/0x1d0 [ 185.181568] drm_ioctl+0x507/0x9c0 [ 185.185113] ? drm_mode_create_dumb+0x300/0x300 [ 185.189784] ? drm_getstats+0x20/0x20 [ 185.193599] ? signal_setup_done+0xdd/0x460 [ 185.197941] ? get_signal+0x1f70/0x1f70 [ 185.201935] ? futex_exit_release+0x220/0x220 [ 185.206454] ? drm_getstats+0x20/0x20 [ 185.210266] do_vfs_ioctl+0xcdb/0x12e0 [ 185.214194] ? lock_downgrade+0x720/0x720 [ 185.218352] ? check_preemption_disabled+0x41/0x280 [ 185.223419] ? ioctl_preallocate+0x200/0x200 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 185.227885] ? __fget+0x356/0x510 [ 185.231343] ? do_dup2+0x450/0x450 [ 185.234912] ? __se_sys_futex+0x298/0x3b0 [ 185.239085] ksys_ioctl+0x9b/0xc0 [ 185.242543] __x64_sys_ioctl+0x6f/0xb0 [ 185.246437] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 185.251020] do_syscall_64+0xf9/0x620 [ 185.254829] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 185.260034] RIP: 0033:0x44a709 [ 185.263240] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 185.282140] RSP: 002b:00007f3e7ef711f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 185.289904] RAX: ffffffffffffffda RBX: 00000000004cb508 RCX: 000000000044a709 [ 185.297174] RDX: 00000000200000c0 RSI: 00000000c02064b2 RDI: 0000000000000005 [ 185.304456] RBP: 00000000004cb500 R08: 0000000000000000 R09: 0000000000000000 [ 185.311738] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb50c [ 185.319004] R13: 00007ffda55eea3f R14: 00007f3e7ef71300 R15: 0000000000022000 [ 185.326777] Kernel Offset: disabled [ 185.330425] Rebooting in 86400 seconds..