overlayfs: failed to resolve './file02$ãhè¿8': -2 BUG: sleeping function called from invalid context at mm/slab.h:422 in_atomic(): 1, irqs_disabled(): 1, pid: 20669, name: syz-executor.0 3 locks held by syz-executor.0/20669: #0: 00000000a613b1fe (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2075 [inline] #0: 00000000a613b1fe (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl+0x5d2/0x2b90 fs/eventpoll.c:1997 #1: 000000005ec0e677 (&dev->dev_mutex){+.+.}, at: v4l2_m2m_fop_poll+0x91/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:1056 #2: 0000000082809e8a (&(&q->done_lock)->rlock){....}, at: v4l2_m2m_poll+0x140/0x720 drivers/media/v4l2-core/v4l2-mem2mem.c:623 irq event stamp: 324 hardirqs last enabled at (323): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (323): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:184 hardirqs last disabled at (324): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (324): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:152 softirqs last enabled at (262): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (233): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (233): [] irq_exit+0x215/0x260 kernel/softirq.c:412 Preemption disabled at: [<0000000000000000>] (null) CPU: 1 PID: 20669 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: 0033:0x7f76a5d10e99 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:00007f76a4686168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 00007f76a5e23f60 RCX: 00007f76a5d10e99 RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007f76a5d6aff1 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffedbfa5b3f R14: 00007f76a4686300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 overlayfs: unrecognized mount option "lowerd" or missing value 9pnet: Could not find request transport: xen overlayfs: failed to resolve './file1': -2 overlayfs: unrecognized mount option "lowerd" or missing value BUG: sleeping function called from invalid context at mm/slab.h:422 in_atomic(): 1, irqs_disabled(): 1, pid: 20782, name: syz-executor.0 3 locks held by syz-executor.0/20782: #0: 000000003f870bd3 (&ep->mtx){+.+.}, at: __do_sys_epoll_ctl fs/eventpoll.c:2075 [inline] #0: 000000003f870bd3 (&ep->mtx){+.+.}, at: __se_sys_epoll_ctl+0x5d2/0x2b90 fs/eventpoll.c:1997 #1: 000000005ec0e677 (&dev->dev_mutex){+.+.}, at: v4l2_m2m_fop_poll+0x91/0x110 drivers/media/v4l2-core/v4l2-mem2mem.c:1056 #2: 000000001a79e8d0 (&(&q->done_lock)->rlock){....}, at: v4l2_m2m_poll+0x140/0x720 drivers/media/v4l2-core/v4l2-mem2mem.c:623 irq event stamp: 218 hardirqs last enabled at (217): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (217): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:184 hardirqs last disabled at (218): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (218): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:152 softirqs last enabled at (0): [] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1856 softirqs last disabled at (0): [<0000000000000000>] (null) Preemption disabled at: [<0000000000000000>] (null) CPU: 0 PID: 20782 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: 0033:0x7f76a5d10e99 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:00007f76a4686168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 00007f76a5e23f60 RCX: 00007f76a5d10e99 RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007f76a5d6aff1 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffedbfa5b3f R14: 00007f76a4686300 R15: 0000000000022000 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) bridge0: port 3(ip6gretap0) entered blocking state bridge0: port 3(ip6gretap0) entered disabled state device ip6gretap0 entered promiscuous mode bridge0: port 3(ip6gretap0) entered blocking state bridge0: port 3(ip6gretap0) entered forwarding state device ip6gretap0 left promiscuous mode bridge0: port 3(ip6gretap0) entered disabled state UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) bridge0: port 3(ip6gretap0) entered blocking state bridge0: port 3(ip6gretap0) entered disabled state device ip6gretap0 entered promiscuous mode bridge0: port 3(ip6gretap0) entered blocking state bridge0: port 3(ip6gretap0) entered forwarding state kauditd_printk_skb: 25 callbacks suppressed audit: type=1800 audit(1641519759.444:204): pid=20965 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=0 res=0 device ip6gretap0 left promiscuous mode bridge0: port 3(ip6gretap0) entered disabled state audit: type=1800 audit(1641519759.634:205): pid=21002 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=65538 res=0 audit: type=1800 audit(1641519759.834:206): pid=21015 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor.4" name="SYSV00000000" dev="hugetlbfs" ino=0 res=0 audit: type=1800 audit(1641519759.874:207): pid=21013 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor.3" name="SYSV00000000" dev="hugetlbfs" ino=131076 res=0 audit: type=1800 audit(1641519759.904:208): pid=21021 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=131076 res=0 hub 1-0:1.0: USB hub found hub 1-0:1.0: 1 port detected audit: type=1800 audit(1641519760.744:209): pid=21123 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="sda1" ino=14849 res=0 audit: type=1804 audit(1641519760.764:210): pid=21123 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir719765089/syzkaller.WZ0RmG/170/file0" dev="sda1" ino=14849 res=1 hub 1-0:1.0: USB hub found hub 1-0:1.0: 1 port detected IPVS: ftp: loaded support on port[0] = 21 audit: type=1800 audit(1641519761.574:211): pid=21198 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="sda1" ino=14883 res=0 audit: type=1804 audit(1641519761.574:212): pid=21198 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir719765089/syzkaller.WZ0RmG/171/file0" dev="sda1" ino=14883 res=1 audit: type=1800 audit(1641519761.634:213): pid=21195 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14885 res=0 IPVS: ftp: loaded support on port[0] = 21 IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready syz-executor.3 (21276) used greatest stack depth: 22320 bytes left IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready IPVS: ftp: loaded support on port[0] = 21 netlink: 'syz-executor.3': attribute type 4 has an invalid length. IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready