Warning: Permanently added '10.128.0.66' (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 syzkaller login: [ 28.112951] kasan: CONFIG_KASAN_INLINE enabled [ 28.117638] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.127211] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.133450] Modules linked in: [ 28.136620] CPU: 0 PID: 8034 Comm: syz-executor734 Not tainted 4.14.290-syzkaller #0 [ 28.144471] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 28.153920] task: ffff8880b397c680 task.stack: ffff888097a40000 [ 28.159959] RIP: 0010:vb2_vmalloc_put_userptr+0x6a/0x210 [ 28.165378] RSP: 0018:ffff888097a478b8 EFLAGS: 00010202 [ 28.170717] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff103fda4 [ 28.177960] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000009 [ 28.185215] RBP: ffff88809908fe00 R08: 0000000000000000 R09: 0000000000040548 [ 28.192463] R10: ffff8880b397cf30 R11: ffff8880b397c680 R12: 0000000000000000 [ 28.199722] R13: ffff88809908fe08 R14: ffffc90006917000 R15: ffff88809908fe00 [ 28.206968] FS: 00007feb8078e700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 28.215165] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.221021] CR2: 00007feb80852e88 CR3: 00000000a11bf000 CR4: 00000000003406f0 [ 28.228273] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.235514] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.242762] Call Trace: [ 28.245333] __vb2_queue_free+0x394/0x7a0 [ 28.249464] ? vb2_vmalloc_detach_dmabuf+0x80/0x80 [ 28.254393] vb2_core_queue_release+0x5b/0x70 [ 28.258867] _vb2_fop_release+0x1c1/0x280 [ 28.263006] vivid_fop_release+0x17d/0x6c0 [ 28.267225] ? fcntl_setlk+0xdb0/0xdb0 [ 28.271087] ? vivid_probe+0x390/0x390 [ 28.274949] ? dev_debug_store+0xe0/0xe0 [ 28.278990] v4l2_release+0xf4/0x190 [ 28.282678] __fput+0x25f/0x7a0 [ 28.285930] task_work_run+0x11f/0x190 [ 28.289792] do_exit+0xa44/0x2850 [ 28.293219] ? wake_up_q+0x82/0xd0 [ 28.296734] ? mm_update_next_owner+0x5b0/0x5b0 [ 28.301379] ? get_signal+0x323/0x1ca0 [ 28.305304] ? lock_acquire+0x170/0x3f0 [ 28.309252] ? lock_downgrade+0x740/0x740 [ 28.313393] do_group_exit+0x100/0x2e0 [ 28.317278] get_signal+0x38d/0x1ca0 [ 28.320969] ? do_futex+0x127/0x1570 [ 28.324661] ? v4l_g_ctrl+0x390/0x390 [ 28.328439] do_signal+0x7c/0x1550 [ 28.331963] ? wait_for_completion_io+0x10/0x10 [ 28.336618] ? setup_sigcontext+0x820/0x820 [ 28.340915] ? v4l2_ioctl+0x1d0/0x2f0 [ 28.344685] ? v4l2_open+0x2f0/0x2f0 [ 28.348380] ? do_vfs_ioctl+0xe2/0xff0 [ 28.352241] ? ioctl_preallocate+0x1a0/0x1a0 [ 28.356622] ? SyS_futex+0x1da/0x290 [ 28.360309] ? SyS_futex+0x1e3/0x290 [ 28.363998] ? exit_to_usermode_loop+0x41/0x200 [ 28.368638] exit_to_usermode_loop+0x160/0x200 [ 28.373191] do_syscall_64+0x4a3/0x640 [ 28.377051] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.382215] RIP: 0033:0x7feb808021d9 [ 28.385899] RSP: 002b:00007feb8078e318 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 28.393577] RAX: fffffffffffffe00 RBX: 00007feb808853f8 RCX: 00007feb808021d9 [ 28.400819] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007feb808853f8 [ 28.408061] RBP: 00007feb808853f0 R08: 0000000000000000 R09: 0000000000000000 [ 28.415301] R10: 0000000000000000 R11: 0000000000000246 R12: 7277732f7665642f [ 28.422549] R13: 00007ffd0d3a885f R14: 00007feb8078e400 R15: 0000000000022000 [ 28.429795] Code: 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 91 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 08 49 8d 7c 24 09 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 40 01 00 [ 28.448860] RIP: vb2_vmalloc_put_userptr+0x6a/0x210 RSP: ffff888097a478b8 [ 28.457575] ---[ end trace ecc2587ba2abb3a9 ]--- [ 28.462406] Kernel panic - not syncing: Fatal exception [ 28.467907] Kernel Offset: disabled [ 28.471512] Rebooting in 86400 seconds..