BUG: sleeping function called from invalid context at mm/slab.h:419 in_atomic(): 1, irqs_disabled(): 1, pid: 9898, name: syz-executor.0 3 locks held by syz-executor.0/9898: #0: (&ep->mtx){+.+.}, at: [] SYSC_epoll_ctl fs/eventpoll.c:2080 [inline] #0: (&ep->mtx){+.+.}, at: [] SyS_epoll_ctl+0x516/0x2780 fs/eventpoll.c:2002 #1: (&dev->dev_mutex){+.+.}, at: [] v4l2_m2m_fop_poll+0x91/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:802 #2: (&(&q->done_lock)->rlock){....}, at: [] v4l2_m2m_poll+0x116/0x670 drivers/media/v4l2-core/v4l2-mem2mem.c:536 irq event stamp: 354 hardirqs last enabled at (353): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (353): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:192 hardirqs last disabled at (354): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (354): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:160 softirqs last enabled at (160): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (69): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (69): [] irq_exit+0x193/0x240 kernel/softirq.c:409 Preemption disabled at: [< (null)>] (null) CPU: 1 PID: 9898 Comm: syz-executor.0 Not tainted 4.14.258-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 ___might_sleep.cold+0x235/0x250 kernel/sched/core.c:6041 slab_pre_alloc_hook mm/slab.h:419 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x284/0x3c0 mm/slab.c:3550 ep_ptable_queue_proc+0x9e/0x370 fs/eventpoll.c:1255 poll_wait include/linux/poll.h:50 [inline] v4l2_m2m_poll+0x583/0x670 drivers/media/v4l2-core/v4l2-mem2mem.c:538 v4l2_m2m_fop_poll+0xa4/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:804 v4l2_poll+0x133/0x1d0 drivers/media/v4l2-core/v4l2-dev.c:342 ep_item_poll fs/eventpoll.c:885 [inline] ep_insert fs/eventpoll.c:1490 [inline] SYSC_epoll_ctl fs/eventpoll.c:2117 [inline] SyS_epoll_ctl+0x14af/0x2780 fs/eventpoll.c:2002 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f300951be99 RSP: 002b:00007f3007e91168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 00007f300962ef60 RCX: 00007f300951be99 RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007f3009575ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc59f395f R14: 00007f3007e91300 R15: 0000000000022000 kauditd_printk_skb: 4 callbacks suppressed audit: type=1804 audit(1640126957.229:16): pid=9979 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir682824706/syzkaller.V2admC/26/bus" dev="sda1" ino=13943 res=1 netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 28 bytes leftover after parsing attributes in process `syz-executor.1'. device bond1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready 8021q: adding VLAN 0 to HW filter on device bond1 audit: type=1800 audit(1640126960.969:17): pid=10212 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=13963 res=0 bridge0: port 3(vlan2) entered blocking state bridge0: port 3(vlan2) entered disabled state audit: type=1804 audit(1640126961.599:18): pid=10212 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir096340499/syzkaller.Er5IrN/18/file0" dev="sda1" ino=13963 res=1 bridge0: port 3(vlan2) entered blocking state bridge0: port 3(vlan2) entered disabled state bridge0: port 3(vlan2) entered blocking state bridge0: port 3(vlan2) entered disabled state bridge0: port 3(vlan2) entered blocking state bridge0: port 3(vlan2) entered disabled state audit: type=1800 audit(1640126962.689:19): pid=10275 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14009 res=0 bridge0: port 3(vlan2) entered blocking state bridge0: port 3(vlan2) entered disabled state bridge0: port 3(vlan2) entered blocking state bridge0: port 3(vlan2) entered disabled state audit: type=1804 audit(1640126963.169:20): pid=10275 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir096340499/syzkaller.Er5IrN/19/file0" dev="sda1" ino=14009 res=1 bridge0: port 3(vlan2) entered blocking state bridge0: port 3(vlan2) entered disabled state audit: type=1800 audit(1640126963.319:21): pid=10322 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="file0" dev="sda1" ino=14002 res=0 audit: type=1804 audit(1640126963.399:22): pid=10322 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir986152313/syzkaller.Ktofaw/21/file0" dev="sda1" ino=14002 res=1 sd 0:0:1:0: PR command failed: 134217730 sd 0:0:1:0: Sense Key : Illegal Request [current] sd 0:0:1:0: Add. Sense: Invalid command operation code audit: type=1800 audit(1640126964.029:23): pid=10356 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=13993 res=0 audit: type=1804 audit(1640126964.079:24): pid=10356 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir096340499/syzkaller.Er5IrN/20/file0" dev="sda1" ino=13993 res=1 netlink: 212936 bytes leftover after parsing attributes in process `syz-executor.1'. audit: type=1800 audit(1640126964.649:25): pid=10389 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="file0" dev="sda1" ino=13950 res=0 audit: type=1804 audit(1640126964.829:26): pid=10389 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir986152313/syzkaller.Ktofaw/22/file0" dev="sda1" ino=13950 res=1 audit: type=1800 audit(1640126965.039:27): pid=10413 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=14019 res=0 audit: type=1804 audit(1640126965.139:28): pid=10413 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir096340499/syzkaller.Er5IrN/21/file0" dev="sda1" ino=14019 res=1