bond23 (unregistering): Released all slaves kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 19907 Comm: syz-executor.1 Not tainted 4.14.197-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88805e03e600 task.stack: ffff8880550a0000 RIP: 0010:vb2_vmalloc_put_userptr+0x6a/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136 RSP: 0018:ffff8880550a7c78 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff0e3ab8c RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000009 RBP: ffff88805cdd4680 R08: 0000000000000000 R09: 000000000004054c R10: ffff88805e03eeb0 R11: ffff88805e03e600 R12: 0000000000000000 R13: ffff88805cdd4688 R14: ffffc9000bd75000 R15: ffff88805cdd4680 FS: 0000000001fa8940(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000052c538 CR3: 00000000588cb000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __vb2_buf_userptr_put drivers/media/v4l2-core/videobuf2-core.c:256 [inline] __vb2_free_mem drivers/media/v4l2-core/videobuf2-core.c:413 [inline] __vb2_queue_free+0x394/0x7a0 drivers/media/v4l2-core/videobuf2-core.c:454 vb2_core_queue_release+0x5b/0x70 drivers/media/v4l2-core/videobuf2-core.c:2043 vb2_queue_release drivers/media/v4l2-core/videobuf2-v4l2.c:669 [inline] _vb2_fop_release+0x1c1/0x280 drivers/media/v4l2-core/videobuf2-v4l2.c:840 vivid_fop_release+0x17d/0x6b6 drivers/media/platform/vivid/vivid-core.c:486 v4l2_release+0xf4/0x190 drivers/media/v4l2-core/v4l2-dev.c:446 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x416f01 RSP: 002b:00007ffff4214c80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416f01 RDX: 0000001b32820000 RSI: 000000000000086e RDI: 0000000000000003 RBP: 0000000000000001 R08: 00000000216a486e R09: 00000000216a4872 R10: 00007ffff4214d70 R11: 0000000000000293 R12: 0000000001190e50 R13: 0000000000055adc R14: ffffffffffffffff R15: 000000000118cf4c 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 RIP: vb2_vmalloc_put_userptr+0x6a/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136 RSP: ffff8880550a7c78 ---[ end trace b249c2f3d04e6e45 ]---