BUG: sleeping function called from invalid context at mm/slab.h:422
in_atomic(): 1, irqs_disabled(): 1, pid: 11139, name: syz-executor.0
3 locks held by syz-executor.0/11139:
 #0: 000000006bbbf80a (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2075 [inline]
 #0: 000000006bbbf80a (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl+0x5d2/0x2b90 fs/eventpoll.c:1997
 #1: 000000002358836b (&dev->dev_mutex){+.+.}, at: v4l2_m2m_fop_poll+0x91/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:1056
 #2: 0000000092b9d801 (&(&q->done_lock)->rlock){....}, at: v4l2_m2m_poll+0x140/0x720 drivers/media/v4l2-core/v4l2-mem2mem.c:623
irq event stamp: 384
hardirqs last  enabled at (383): [<ffffffff881950e9>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (383): [<ffffffff881950e9>] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:184
hardirqs last disabled at (384): [<ffffffff88194d76>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (384): [<ffffffff88194d76>] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:152
softirqs last  enabled at (314): [<ffffffff88400678>] __do_softirq+0x678/0x980 kernel/softirq.c:318
softirqs last disabled at (267): [<ffffffff813927d5>] invoke_softirq kernel/softirq.c:372 [inline]
softirqs last disabled at (267): [<ffffffff813927d5>] irq_exit+0x215/0x260 kernel/softirq.c:412
syz-executor.4 uses obsolete (PF_INET,SOCK_PACKET)
Preemption disabled at:
[<0000000000000000>]           (null)
CPU: 1 PID: 11139 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 ___might_sleep.cold+0x235/0x250 kernel/sched/core.c:6192
 slab_pre_alloc_hook mm/slab.h:422 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc+0x26d/0x370 mm/slab.c:3557
 ep_ptable_queue_proc+0xaf/0x390 fs/eventpoll.c:1242
 poll_wait include/linux/poll.h:51 [inline]
 v4l2_m2m_poll+0x633/0x720 drivers/media/v4l2-core/v4l2-mem2mem.c:625
 v4l2_m2m_fop_poll+0xa4/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:1058
 v4l2_poll+0x146/0x1f0 drivers/media/v4l2-core/v4l2-dev.c:350
 vfs_poll include/linux/poll.h:90 [inline]
 ep_item_poll+0x14a/0x3e0 fs/eventpoll.c:890
 ep_insert fs/eventpoll.c:1479 [inline]
 __do_sys_epoll_ctl fs/eventpoll.c:2112 [inline]
 __se_sys_epoll_ctl+0x1b04/0x2b90 fs/eventpoll.c:1997
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f5ca5c6ce99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5ca45e2168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
RAX: ffffffffffffffda RBX: 00007f5ca5d7ff60 RCX: 00007f5ca5c6ce99
RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 00007f5ca5cc6ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd2d9eab7f R14: 00007f5ca45e2300 R15: 0000000000022000
BUG: sleeping function called from invalid context at mm/slab.h:422
in_atomic(): 1, irqs_disabled(): 1, pid: 11210, name: syz-executor.0
3 locks held by syz-executor.0/11210:
 #0: 000000006c00b422 (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2075 [inline]
 #0: 000000006c00b422 (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl+0x5d2/0x2b90 fs/eventpoll.c:1997
 #1: 000000002358836b (&dev->dev_mutex){+.+.}, at: v4l2_m2m_fop_poll+0x91/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:1056
 #2: 00000000fbff2a43 (&(&q->done_lock)->rlock){....}, at: v4l2_m2m_poll+0x140/0x720 drivers/media/v4l2-core/v4l2-mem2mem.c:623
irq event stamp: 258
hardirqs last  enabled at (257): [<ffffffff881950e9>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (257): [<ffffffff881950e9>] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:184
hardirqs last disabled at (258): [<ffffffff88194d76>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (258): [<ffffffff88194d76>] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:152
softirqs last  enabled at (0): [<ffffffff81370d39>] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1856
softirqs last disabled at (0): [<0000000000000000>]           (null)
Preemption disabled at:
[<0000000000000000>]           (null)
CPU: 1 PID: 11210 Comm: syz-executor.0 Tainted: G        W         4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 ___might_sleep.cold+0x235/0x250 kernel/sched/core.c:6192
 slab_pre_alloc_hook mm/slab.h:422 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc+0x26d/0x370 mm/slab.c:3557
 ep_ptable_queue_proc+0xaf/0x390 fs/eventpoll.c:1242
 poll_wait include/linux/poll.h:51 [inline]
 v4l2_m2m_poll+0x633/0x720 drivers/media/v4l2-core/v4l2-mem2mem.c:625
 v4l2_m2m_fop_poll+0xa4/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:1058
 v4l2_poll+0x146/0x1f0 drivers/media/v4l2-core/v4l2-dev.c:350
 vfs_poll include/linux/poll.h:90 [inline]
 ep_item_poll+0x14a/0x3e0 fs/eventpoll.c:890
 ep_insert fs/eventpoll.c:1479 [inline]
 __do_sys_epoll_ctl fs/eventpoll.c:2112 [inline]
 __se_sys_epoll_ctl+0x1b04/0x2b90 fs/eventpoll.c:1997
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f5ca5c6ce99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5ca45e2168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
RAX: ffffffffffffffda RBX: 00007f5ca5d7ff60 RCX: 00007f5ca5c6ce99
RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 00007f5ca5cc6ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd2d9eab7f R14: 00007f5ca45e2300 R15: 0000000000022000
ceph: device name is missing path (no : separator in /dev/sr0)
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number
ISOFS: Invalid session number
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Logical zone size(0) < hardware blocksize(1024)
overlayfs: failed to resolve './file1': -2
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number
ISOFS: Invalid session number
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number
ISOFS: Invalid session number
ISOFS: Logical zone size(0) < hardware blocksize(1024)
overlayfs: './file0' not a directory
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Logical zone size(0) < hardware blocksize(1024)
ISOFS: Invalid session number or type of track
ISOFS: Invalid session number
ISOFS: Logical zone size(0) < hardware blocksize(1024)
overlayfs: './file0' not a directory
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
nested_vmx_exit_reflected failed vm entry 7
EXT4-fs error (device sda1): mb_free_blocks:1452: group 6, inode 14300: block 215040:freeing already freed block (bit 18432); block bitmap corrupt.
EXT4-fs error (device sda1): ext4_mb_generate_buddy:744: group 6, block bitmap and bg descriptor inconsistent: 32736 vs 32737 free clusters
EXT4-fs (sda1): pa 000000003cbe57fe: logic 0, phys. 215040, len 32
EXT4-fs error (device sda1): ext4_mb_release_inode_pa:3864: group 6, free 16, pa_free 15
nested_vmx_exit_reflected failed vm entry 7