EXT4-fs warning (device loop9): ext4_enable_quotas:7168: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix.
EXT4-fs (loop9): mount failed
==================================================================
BUG: KCSAN: data-race in audit_log_start / audit_receive

write to 0xffffffff88e73450 of 8 bytes by task 12087 on cpu 0:
 audit_ctl_lock kernel/audit.c:235 [inline]
 audit_receive+0x78/0x2180 kernel/audit.c:1569
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x5a5/0x680 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x58b/0x6b0 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x145/0x180 net/socket.c:727
 sock_sendmsg+0xc1/0x130 net/socket.c:750
 splice_to_socket+0x5fe/0x9a0 fs/splice.c:883
 do_splice_from fs/splice.c:935 [inline]
 direct_splice_actor+0x156/0x2a0 fs/splice.c:1158
 splice_direct_to_actor+0x312/0x680 fs/splice.c:1102
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0xda/0x150 fs/splice.c:1227
 do_sendfile+0x380/0x650 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64 fs/read_write.c:1417 [inline]
 __x64_sys_sendfile64+0x105/0x150 fs/read_write.c:1417
 x64_sys_call+0xb39/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:41
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff88e73450 of 8 bytes by task 12079 on cpu 1:
 audit_ctl_owner_current kernel/audit.c:256 [inline]
 audit_log_start+0x129/0x6c0 kernel/audit.c:1881
 audit_seccomp+0x48/0x100 kernel/auditsc.c:3001
 seccomp_log kernel/seccomp.c:1033 [inline]
 __seccomp_filter+0x69d/0x10d0 kernel/seccomp.c:1328
 __secure_computing+0x82/0x150 kernel/seccomp.c:1388
 syscall_trace_enter+0xcf/0x1e0 kernel/entry/common.c:52
 syscall_enter_from_user_mode_work include/linux/entry-common.h:170 [inline]
 syscall_enter_from_user_mode include/linux/entry-common.h:200 [inline]
 do_syscall_64+0xac/0x200 arch/x86/entry/syscall_64.c:90
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000000000000000 -> 0xffff88810ae030c0

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 12079 Comm: syz.9.2666 Not tainted 6.16.0-rc6-syzkaller-00002-g155a3c003e55 #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
==================================================================
loop9: detected capacity change from 0 to 512
ext4 filesystem being mounted at /306/file0 supports timestamps until 2038-01-19 (0x7fffffff)
EXT4-fs error (device loop9): ext4_xattr_block_get:593: inode #15: comm syz.9.2666: corrupted xattr block 32: invalid header
SELinux: inode_doinit_use_xattr:  getxattr returned 117 for dev=loop9 ino=15
EXT4-fs error (device loop9): ext4_xattr_block_get:593: inode #15: comm syz.9.2666: corrupted xattr block 32: invalid header
SELinux: inode_doinit_use_xattr:  getxattr returned 117 for dev=loop9 ino=15
EXT4-fs error (device loop9): ext4_xattr_block_list:762: inode #15: comm syz.9.2666: corrupted xattr block 32: invalid header