kmalloc-96              2090KB       2632KB
kmem_cache_node          213KB        220KB
kmem_cache               177KB        218KB
Out of memory and no killable processes...
Kernel panic - not syncing: System is deadlocked on memory
CPU: 0 UID: 0 PID: 29323 Comm: kworker/0:3 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events p9_poll_workfn
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 vpanic+0x552/0x970 kernel/panic.c:650
 panic+0xd1/0xe0 kernel/panic.c:787
 out_of_memory.cold+0xa2/0x170 mm/oom_kill.c:1182
 __alloc_pages_may_oom mm/page_alloc.c:4139 [inline]
 __alloc_pages_slowpath mm/page_alloc.c:4937 [inline]
 __alloc_frozen_pages_noprof+0x233d/0x2ba0 mm/page_alloc.c:5263
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2484
 alloc_frozen_pages_noprof mm/mempolicy.c:2555 [inline]
 alloc_pages_noprof+0x131/0x390 mm/mempolicy.c:2575
 vm_area_alloc_pages mm/vmalloc.c:3731 [inline]
 __vmalloc_area_node mm/vmalloc.c:3876 [inline]
 __vmalloc_node_range_noprof+0xa1d/0x1530 mm/vmalloc.c:4064
 vmalloc_user_noprof+0x9e/0xe0 mm/vmalloc.c:4218
 vb2_vmalloc_alloc+0x135/0x410 drivers/media/common/videobuf2/videobuf2-vmalloc.c:47
 __vb2_buf_mem_alloc drivers/media/common/videobuf2/videobuf2-core.c:242 [inline]
 __vb2_queue_alloc+0x8d5/0x1160 drivers/media/common/videobuf2/videobuf2-core.c:523
 vb2_core_reqbufs+0x899/0xf30 drivers/media/common/videobuf2/videobuf2-core.c:958
 __vb2_init_fileio+0x32d/0x1000 drivers/media/common/videobuf2/videobuf2-core.c:2879
 vb2_core_poll+0x611/0x740 drivers/media/common/videobuf2/videobuf2-core.c:2713
 vb2_poll+0x4b/0xe0 drivers/media/common/videobuf2/videobuf2-v4l2.c:979
 vb2_fop_poll+0x10e/0x350 drivers/media/common/videobuf2/videobuf2-v4l2.c:1245
 v4l2_poll+0x15f/0x220 drivers/media/v4l2-core/v4l2-dev.c:350
 vfs_poll include/linux/poll.h:82 [inline]
 p9_fd_poll+0x1c9/0x2c0 net/9p/trans_fd.c:204
 p9_poll_mux+0xd4/0x370 net/9p/trans_fd.c:594
 p9_poll_workfn+0x115/0x1c0 net/9p/trans_fd.c:1064
 process_one_work+0x9d7/0x1920 kernel/workqueue.c:3275
 process_scheduled_works kernel/workqueue.c:3358 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3439
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..