EXT4-fs (loop5): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) EXT4-fs (loop5): group descriptors corrupted! ====================================================== WARNING: possible circular locking dependency detected 4.14.291-syzkaller #0 Not tainted ------------------------------------------------------ kworker/u4:0/5 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 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 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/u4:0/5: #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: 5 Comm: kworker/u4:0 Not tainted 4.14.291-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 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 print_req_error: I/O error, dev loop3, sector 0 EXT4-fs (loop5): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) print_req_error: I/O error, dev loop3, sector 0 EXT4-fs (loop5): group descriptors corrupted! MINIX-fs: mounting unchecked file system, running fsck is recommended EXT4-fs (loop5): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) overlayfs: unrecognized mount option "index=øóKoff" or missing value EXT4-fs (loop5): group descriptors corrupted! overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value A link change request failed with some changes committed already. Interface ipvlan0 may have been left with an inconsistent configuration, please check. overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value A link change request failed with some changes committed already. Interface ipvlan0 may have been left with an inconsistent configuration, please check. overlayfs: unrecognized mount option "index=øóKoff" or missing value FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) overlayfs: unrecognized mount option "index=øóKoff" or missing value A link change request failed with some changes committed already. Interface ipvlan0 may have been left with an inconsistent configuration, please check. overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value EXT4-fs (loop5): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) overlayfs: unrecognized mount option "index=øóKoff" or missing value EXT4-fs (loop5): group descriptors corrupted! overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value overlayfs: unrecognized mount option "index=øóKoff" or missing value FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) EXT4-fs (loop3): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) EXT4-fs (loop3): group descriptors corrupted! 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. 9pnet: Could not find request transport: xen EXT4-fs (loop1): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) EXT4-fs (loop5): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) EXT4-fs (loop1): group descriptors corrupted! EXT4-fs (loop5): group descriptors corrupted! 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: maximum fs stacking depth exceeded 9pnet: Could not find request transport: xen overlayfs: maximum fs stacking depth exceeded overlayfs: fs on './file0' does not support file handles, falling back to index=off. 9pnet: Could not find request transport: xen 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. 9pnet: Could not find request transport: xen 9pnet: Could not find request transport: xen 9pnet: Could not find request transport: xen 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. 9pnet: Could not find request transport: xen device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode bridge0: port 3(team0) entered disabled state 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. 8021q: adding VLAN 0 to HW filter on device team0 EXT4-fs (loop1): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) bond0: Enslaving team0 as an active interface with an up link EXT4-fs (loop1): group descriptors corrupted! bond0: Releasing backup interface team0 bridge0: port 3(team0) entered blocking state bridge0: port 3(team0) entered disabled state device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode 9pnet: Could not find request transport: xen syz-executor.3 (10728) used greatest stack depth: 23856 bytes left 8021q: adding VLAN 0 to HW filter on device team0 bond0: Enslaving team0 as an active interface with an up link device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode bridge0: port 3(team0) entered disabled state 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 kauditd_printk_skb: 72 callbacks suppressed audit: type=1804 audit(1661584831.357:84): pid=10808 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.4" name="/root/syzkaller-testdir1585004074/syzkaller.M85g4K/35/file0" dev="sda1" ino=13903 res=1 bridge0: port 3(team0) entered blocking state bridge0: port 3(team0) entered disabled state device team0 entered promiscuous mode device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode EXT4-fs (loop1): ext4_check_descriptors: Checksum for group 0 failed (35945!=35950) EXT4-fs (loop1): group descriptors corrupted! netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue audit: type=1800 audit(1661584833.297:85): pid=11084 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=13981 res=0 audit: type=1804 audit(1661584833.317:86): pid=11084 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir1585004074/syzkaller.M85g4K/41/file0" dev="sda1" ino=13981 res=1 audit: type=1804 audit(1661584833.317:87): pid=11084 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.4" name="/root/syzkaller-testdir1585004074/syzkaller.M85g4K/41/file0" dev="sda1" ino=13981 res=1 squashfs: SQUASHFS error: Major/Minor mismatch, trying to mount newer 4.6 filesystem squashfs: SQUASHFS error: Please update your kernel squashfs: SQUASHFS error: Major/Minor mismatch, trying to mount newer 4.6 filesystem squashfs: SQUASHFS error: Please update your kernel squashfs: SQUASHFS error: Major/Minor mismatch, trying to mount newer 4.6 filesystem squashfs: SQUASHFS error: Please update your kernel audit: type=1800 audit(1661584834.337:88): pid=11275 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="file0" dev="sda1" ino=13946 res=0 audit: type=1804 audit(1661584834.377:89): pid=11278 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir1585004074/syzkaller.M85g4K/43/file0" dev="sda1" ino=13946 res=1 audit: type=1800 audit(1661584834.637:90): pid=11327 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="file0" dev="loop0" ino=7 res=0 base_sock_release(ffff88805410c5c0) sk=ffff888090e53700 audit: type=1804 audit(1661584834.637:91): pid=11327 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1073141329/syzkaller.wZhqjl/31/file0/file0" dev="loop0" ino=7 res=1 audit: type=1804 audit(1661584834.637:92): pid=11327 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir1073141329/syzkaller.wZhqjl/31/file0/file0" dev="loop0" ino=7 res=1 base_sock_release(ffff88808e50b100) sk=ffff888099ffe000 base_sock_release(ffff88809f5e69c0) sk=ffff888094c40d00 base_sock_release(ffff8880540f5140) sk=ffff88809357cec0 base_sock_release(ffff88805414c980) sk=ffff8880abfe9600 audit: type=1804 audit(1661584837.067:93): pid=11598 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1073141329/syzkaller.wZhqjl/39/bus" dev="sda1" ino=14011 res=1 audit: type=1800 audit(1661584837.067:94): pid=11598 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="sda1" ino=14011 res=0