device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode ====================================================== WARNING: possible circular locking dependency detected 4.14.280-syzkaller #0 Not tainted ------------------------------------------------------ kworker/u4:3/2847 is trying to acquire lock: (sk_lock-AF_INET){+.+.}, at: [] do_strp_work net/strparser/strparser.c:415 [inline] (sk_lock-AF_INET){+.+.}, at: [] strp_work+0x3e/0x100 net/strparser/strparser.c:434 bridge0: port 3(team0) entered disabled state but task is already holding lock: ((&strp->work)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 ((&strp->work)){+.+.}: flush_work+0xad/0x770 kernel/workqueue.c:2890 __cancel_work_timer+0x321/0x460 kernel/workqueue.c:2965 strp_done+0x53/0xd0 net/strparser/strparser.c:519 kcm_attach net/kcm/kcmsock.c:1429 [inline] kcm_attach_ioctl net/kcm/kcmsock.c:1490 [inline] kcm_ioctl+0x828/0xfb0 net/kcm/kcmsock.c:1701 sock_do_ioctl net/socket.c:974 [inline] sock_ioctl+0x2cc/0x4c0 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #0 (sk_lock-AF_INET){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 lock_sock_nested+0xb7/0x100 net/core/sock.c:2813 do_strp_work net/strparser/strparser.c:415 [inline] strp_work+0x3e/0x100 net/strparser/strparser.c:434 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ISO 9660 Extensions: Microsoft Joliet Level 0 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((&strp->work)); lock(sk_lock-AF_INET); lock((&strp->work)); lock(sk_lock-AF_INET); *** DEADLOCK *** 2 locks held by kworker/u4:3/2847: #0: ("%s""kstrp"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088 #1: ((&strp->work)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 stack backtrace: CPU: 0 PID: 2847 Comm: kworker/u4:3 Not tainted 4.14.280-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: kstrp strp_work Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 lock_sock_nested+0xb7/0x100 net/core/sock.c:2813 do_strp_work net/strparser/strparser.c:415 [inline] strp_work+0x3e/0x100 net/strparser/strparser.c:434 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 8021q: adding VLAN 0 to HW filter on device team0 bond0: Enslaving team0 as an active interface with an up link bond0: Releasing backup interface team0 bridge0: port 3(team0) entered blocking state bridge0: port 3(team0) entered disabled state ISO 9660 Extensions: Microsoft Joliet Level 0 device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 120 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 120 bytes leftover after parsing attributes in process `syz-executor.1'. Zero length message leads to an empty skb netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 120 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 120 bytes leftover after parsing attributes in process `syz-executor.1'. IPVS: ftp: loaded support on port[0] = 21 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 120 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 120 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. 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. hid-generic 0000:0000:0000.0001: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0001 failed with error -22 hid-generic 0000:0000:0000.0002: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0002 failed with error -22 hid-generic 0000:0000:0000.0003: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0003 failed with error -22 hid-generic 0000:0000:0000.0004: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0004 failed with error -22 hid-generic 0000:0000:0000.0005: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0005 failed with error -22 hid-generic 0000:0000:0000.0006: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0006 failed with error -22 hid-generic 0000:0000:0000.0007: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0007 failed with error -22 hid-generic 0000:0000:0000.0008: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0008 failed with error -22 audit: type=1800 audit(1652890264.566:2): pid=10049 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="bus" dev="loop5" ino=5 res=0 hid-generic 0000:0000:0000.0009: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.0009 failed with error -22 audit: type=1800 audit(1652890265.046:3): pid=10066 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=9 res=0 audit: type=1800 audit(1652890265.086:4): pid=10071 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="bus" dev="loop5" ino=11 res=0 hid-generic 0000:0000:0000.000A: item fetching failed at offset 0/1 hid-generic: probe of 0000:0000:0000.000A failed with error -22 audit: type=1800 audit(1652890265.246:5): pid=10081 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=14 res=0 audit: type=1800 audit(1652890265.496:6): pid=10109 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=18 res=0 overlayfs: unrecognized mount option "xino=auto" or missing value audit: type=1800 audit(1652890265.526:7): pid=10110 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="bus" dev="loop3" ino=20 res=0 overlayfs: unrecognized mount option "redirect_dir=./bus" or missing value audit: type=1800 audit(1652890265.616:8): pid=10119 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=24 res=0 audit: type=1800 audit(1652890265.696:9): pid=10123 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="bus" dev="loop5" ino=26 res=0 overlayfs: unrecognized mount option "xino=auto" or missing value overlayfs: unrecognized mount option "redirect_dir=./bus" or missing value audit: type=1800 audit(1652890266.296:10): pid=10149 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="bus" dev="loop3" ino=30 res=0 audit: type=1800 audit(1652890266.386:11): pid=10151 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=32 res=0 overlayfs: unrecognized mount option "xino=auto" or missing value overlayfs: unrecognized mount option "redirect_dir=./bus" or missing value overlayfs: unrecognized mount option "xino=auto" or missing value overlayfs: unrecognized mount option "redirect_dir=./bus" or missing value overlayfs: unrecognized mount option "xino=auto" or missing value overlayfs: unrecognized mount option "redirect_dir=./bus" or missing value overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "xino=auto" or missing value MINIX-fs: mounting unchecked file system, running fsck is recommended overlayfs: fs on './file0' does not support file handles, falling back to index=off. attempt to access beyond end of device loop0: rw=0, want=8194, limit=144 Buffer I/O error on dev loop0, logical block 4096, async page read attempt to access beyond end of device cannot load conntrack support for proto=2 overlayfs: unrecognized mount option "redirect_dir=./bus" or missing value loop0: rw=0, want=8194, limit=144 Buffer I/O error on dev loop0, logical block 4096, async page read overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. MINIX-fs: mounting unchecked file system, running fsck is recommended overlayfs: fs on 'file0' does not support file handles, falling back to index=off. MINIX-fs: mounting unchecked file system, running fsck is recommended overlayfs: unrecognized mount option "xino=auto" or missing value overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. cannot load conntrack support for proto=2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "redirect_dir=./bus" or missing value cannot load conntrack support for proto=2 overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. MINIX-fs: mounting unchecked file system, running fsck is recommended overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. MINIX-fs: mounting unchecked file system, running fsck is recommended attempt to access beyond end of device loop2: rw=0, want=8194, limit=144 Buffer I/O error on dev loop2, logical block 4096, async page read attempt to access beyond end of device attempt to access beyond end of device loop4: rw=0, want=8194, limit=144 loop2: rw=0, want=8194, limit=144 cannot load conntrack support for proto=2 Buffer I/O error on dev loop4, logical block 4096, async page read Buffer I/O error on dev loop2, logical block 4096, async page read attempt to access beyond end of device loop4: rw=0, want=8194, limit=144 Buffer I/O error on dev loop4, logical block 4096, async page read cannot load conntrack support for proto=2 MINIX-fs: mounting unchecked file system, running fsck is recommended cannot load conntrack support for proto=2 MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended attempt to access beyond end of device cannot load conntrack support for proto=2 loop1: rw=0, want=8194, limit=144 attempt to access beyond end of device cannot load conntrack support for proto=2 loop4: rw=0, want=8194, limit=144 Buffer I/O error on dev loop1, logical block 4096, async page read attempt to access beyond end of device Buffer I/O error on dev loop4, logical block 4096, async page read loop1: rw=0, want=8194, limit=144 cannot load conntrack support for proto=2 attempt to access beyond end of device Buffer I/O error on dev loop1, logical block 4096, async page read cannot load conntrack support for proto=2 loop4: rw=0, want=8194, limit=144 Buffer I/O error on dev loop4, logical block 4096, async page read cannot load conntrack support for proto=2 MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended attempt to access beyond end of device MINIX-fs: mounting unchecked file system, running fsck is recommended cannot load conntrack support for proto=2 loop2: rw=0, want=8194, limit=144 attempt to access beyond end of device MINIX-fs: mounting unchecked file system, running fsck is recommended loop4: rw=0, want=8194, limit=144 cannot load conntrack support for proto=2 nla_parse: 2 callbacks suppressed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. attempt to access beyond end of device cannot load conntrack support for proto=2 attempt to access beyond end of device loop2: rw=0, want=8194, limit=144 loop4: rw=0, want=8194, limit=144 netlink: 72 bytes leftover after parsing attributes in process `syz-executor.1'. qfq: no options cannot load conntrack support for proto=2 device geneve2 entered promiscuous mode netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor.1'. qfq: no options device geneve2 entered promiscuous mode netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'. MINIX-fs: mounting unchecked file system, running fsck is recommended netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. cannot load conntrack support for proto=2 netlink: 72 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 72 bytes leftover after parsing attributes in process `syz-executor.1'. device geneve2 entered promiscuous mode qfq: no options qfq: no options device geneve2 entered promiscuous mode qfq: no options qfq: no options qfq: no options device geneve2 entered promiscuous mode qfq: no options qfq: no options qfq: no options device geneve2 entered promiscuous mode