------------[ cut here ]------------ WARNING: CPU: 1 PID: 312686 at kernel/locking/lockdep.c:894 look_up_lock_class+0x86/0x110 kernel/locking/lockdep.c:894 Modules linked in: CPU: 1 PID: 312686 Comm: syz-executor.7 Not tainted 5.10.221 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:look_up_lock_class+0x86/0x110 kernel/locking/lockdep.c:894 Code: 24 e8 ce 02 00 00 4d 85 e4 74 2c 49 39 5c 24 40 75 eb 48 8b 45 18 49 39 84 24 b0 00 00 00 74 1a 48 81 7d 00 00 22 15 86 74 10 <0f> 0b eb 0c e8 41 59 0a fe 85 c0 75 50 45 31 e4 48 83 c4 08 4c 89 RSP: 0018:ffff88804fe2f590 EFLAGS: 00010002 RAX: ffffffff84535860 RBX: ffffffff871b9521 RCX: 0000000000000000 RDX: 0000000000000046 RSI: 0000000000000001 RDI: ffff88801d7beec0 RBP: ffff88801d7beec0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000246 R11: 0000000000000001 R12: ffffffff868c5980 R13: ffffffff86bf59e0 R14: 0000000000000001 R15: 0000000000000000 FS: 00007fc8daad8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ec34000 CR3: 000000004d8fc000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: register_lock_class+0xbb/0x17b0 kernel/locking/lockdep.c:1244 __lock_acquire+0x102/0x5b00 kernel/locking/lockdep.c:4834 lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 down_write_nested+0x96/0x160 kernel/locking/rwsem.c:1667 ext4_double_down_write_data_sem fs/ext4/move_extent.c:58 [inline] ext4_move_extents+0x90d/0x3050 fs/ext4/move_extent.c:610 __ext4_ioctl+0x302e/0x4190 fs/ext4/ioctl.c:999 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fc8dd562b19 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:00007fc8daad8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc8dd675f60 RCX: 00007fc8dd562b19 RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000006 RBP: 00007fc8dd5bcf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd070196df R14: 00007fc8daad8300 R15: 0000000000022000 irq event stamp: 2593 hardirqs last enabled at (2593): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (2592): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (2440): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (2357): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace ec7c79c865c8025c ]--- TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1326 audit(1720887674.589:2060): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=316488 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f972591bb19 code=0x0 audit: type=1326 audit(1720887674.812:2061): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=316637 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f972591bb19 code=0x0 audit: type=1326 audit(1720887675.122:2062): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=316937 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f972591bb19 code=0x0 audit: type=1326 audit(1720887675.342:2063): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=316955 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f972591bb19 code=0x0 selinux_netlink_send: 365 callbacks suppressed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317065 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317065 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317177 comm=syz-executor.1 netlink: 44 bytes leftover after parsing attributes in process `syz-executor.0'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317186 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317189 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317299 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317302 comm=syz-executor.5 netlink: 44 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 44 bytes leftover after parsing attributes in process `syz-executor.0'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=317418 comm=syz-executor.5 netlink: 44 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 'syz-executor.0': attribute type 12 has an invalid length. netlink: 68 bytes leftover after parsing attributes in process `syz-executor.0'.