Out of memory: Kill process 7896 (syz-executor.0) score 1007 or sacrifice child Killed process 7896 (syz-executor.0) total-vm:75232kB, anon-rss:16552kB, file-rss:34816kB, shmem-rss:0kB oom_reaper: reaped process 7896 (syz-executor.0), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB 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: 21085 Comm: syz-executor.2 Not tainted 4.14.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88808d74c240 task.stack: ffff8880423b0000 RIP: 0010:vb2_vmalloc_put_userptr+0x6a/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136 RSP: 0000:ffff8880423b7a58 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000850f000 RDX: 0000000000000001 RSI: ffffffff84555ec2 RDI: 0000000000000009 RBP: ffff88808dfe9900 R08: dffffc0000000000 R09: ffffffff8a085820 R10: ffff8880423b7b18 R11: ffff88808d74c240 R12: 0000000000000000 R13: ffff88808dfe9908 R14: ffffc900162bb000 R15: dffffc0000000000 FS: 00007fbe3d800700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000004da5a000 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+0x395/0x7b0 drivers/media/v4l2-core/videobuf2-core.c:454 vb2_core_queue_release+0x5b/0x70 drivers/media/v4l2-core/videobuf2-core.c:2043 v4l2_m2m_ctx_release+0x1a/0x30 drivers/media/v4l2-core/v4l2-mem2mem.c:673 vim2m_release+0xd4/0x120 drivers/media/platform/vim2m.c:959 v4l2_release+0xf4/0x190 drivers/media/v4l2-core/v4l2-dev.c:446 __fput+0x25f/0x790 fs/file_table.c:210 task_work_run+0x113/0x190 kernel/task_work.c:113 get_signal+0x187f/0x1ca0 kernel/signal.c:2234 do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160 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+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007fbe3d7ffc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffff2 RBX: 00000000004f0ac0 RCX: 000000000045c829 RDX: 0000000020000000 RSI: 00000000c100565c RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000600 R14: 00000000004c8b7e R15: 00007fbe3d8006d4 Code: 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 8c 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 3b 01 00 RIP: vb2_vmalloc_put_userptr+0x6a/0x210 drivers/media/v4l2-core/videobuf2-vmalloc.c:136 RSP: ffff8880423b7a58 ---[ end trace cfd84f0abc97f7ad ]---