netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. BUG: sleeping function called from invalid context at mm/slab.h:419 in_atomic(): 1, irqs_disabled(): 1, pid: 9519, name: syz-executor.3 3 locks held by syz-executor.3/9519: #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: 504 hardirqs last enabled at (503): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (503): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:192 hardirqs last disabled at (504): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (504): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:160 softirqs last enabled at (288): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (59): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (59): [] irq_exit+0x193/0x240 kernel/softirq.c:409 Preemption disabled at: [< (null)>] (null) CPU: 0 PID: 9519 Comm: syz-executor.3 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: 0033:0x7f5ca250be99 RSP: 002b:00007f5ca0e81168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 00007f5ca261ef60 RCX: 00007f5ca250be99 RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007f5ca2565ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff7467057f R14: 00007f5ca0e81300 R15: 0000000000022000 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.4'. attempt to access beyond end of device loop1: rw=2049, want=16, limit=15 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue Buffer I/O error on dev loop1, logical block 15, lost async page write netlink: 32 bytes leftover after parsing attributes in process `syz-executor.2'. audit: type=1800 audit(1640089728.958:2): pid=9549 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="sda1" ino=13902 res=0 L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. IPVS: ftp: loaded support on port[0] = 21 attempt to access beyond end of device loop1: rw=2049, want=16, limit=15 syz-executor.2 (9536) used greatest stack depth: 24576 bytes left Buffer I/O error on dev loop1, logical block 15, lost async page write EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue netlink: 32 bytes leftover after parsing attributes in process `syz-executor.2'. audit: type=1800 audit(1640089729.958:3): pid=9598 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=17 res=0 netlink: 6 bytes leftover after parsing attributes in process `syz-executor.4'. attempt to access beyond end of device loop1: rw=2049, want=16, limit=15 Buffer I/O error on dev loop1, logical block 15, lost async page write BTRFS: device fsid e76ed352-74d7-4461-bdaa-670e3acfe92b devid 0 transid 0 /dev/loop3 netlink: 6 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor.4'. EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue netlink: 32 bytes leftover after parsing attributes in process `syz-executor.2'. audit: type=1800 audit(1640089730.648:4): pid=9656 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=17 res=0 UDF-fs: error (device loop3): udf_process_sequence: Block 99 of volume descriptor sequence is corrupted or we could not read it netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. UDF-fs: error (device loop3): udf_process_sequence: Block 1984 of volume descriptor sequence is corrupted or we could not read it UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue netlink: 32 bytes leftover after parsing attributes in process `syz-executor.2'. audit: type=1800 audit(1640089731.708:5): pid=9704 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=17 res=0 UDF-fs: error (device loop3): udf_process_sequence: Block 99 of volume descriptor sequence is corrupted or we could not read it UDF-fs: error (device loop3): udf_process_sequence: Block 1984 of volume descriptor sequence is corrupted or we could not read it UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop3): udf_process_sequence: Block 99 of volume descriptor sequence is corrupted or we could not read it UDF-fs: error (device loop3): udf_process_sequence: Block 1984 of volume descriptor sequence is corrupted or we could not read it UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed APIC base relocation is unsupported by KVM UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found EXT4-fs (loop5): warning: mounting fs with errors, running e2fsck is recommended UDF-fs: Scanning with blocksize 4096 failed EXT4-fs warning (device loop5): ext4_update_dynamic_rev:793: updating to rev 1 because of new feature flag, running e2fsck is recommended EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop5): warning: mounting fs with errors, running e2fsck is recommended EXT4-fs warning (device loop5): ext4_update_dynamic_rev:793: updating to rev 1 because of new feature flag, running e2fsck is recommended UDF-fs: error (device loop3): udf_process_sequence: Block 99 of volume descriptor sequence is corrupted or we could not read it EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: error (device loop3): udf_process_sequence: Block 1984 of volume descriptor sequence is corrupted or we could not read it UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found EXT4-fs (loop5): warning: mounting fs with errors, running e2fsck is recommended UDF-fs: Scanning with blocksize 4096 failed EXT4-fs warning (device loop5): ext4_update_dynamic_rev:793: updating to rev 1 because of new feature flag, running e2fsck is recommended EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue bridge0: port 3(ip6gretap0) entered blocking state EXT4-fs (loop5): warning: mounting fs with errors, running e2fsck is recommended bridge0: port 3(ip6gretap0) entered disabled state EXT4-fs warning (device loop5): ext4_update_dynamic_rev:793: updating to rev 1 because of new feature flag, running e2fsck is recommended device ip6gretap0 entered promiscuous mode bridge0: port 3(ip6gretap0) entered blocking state bridge0: port 3(ip6gretap0) entered forwarding state EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue device ip6gretap0 left promiscuous mode bridge0: port 3(ip6gretap0) entered disabled state netlink: 181428 bytes leftover after parsing attributes in process `syz-executor.1'. 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 netlink: 181428 bytes leftover after parsing attributes in process `syz-executor.1'. 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 device ip6gretap0 left promiscuous mode bridge0: port 3(ip6gretap0) entered disabled state