loop7: detected capacity change from 0 to 33280
EXT4-fs (loop7): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /0/file1 supports timestamps until 2038-01-19 (0x7fffffff)
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 17529 Comm: syz.7.5609 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3844 [inline]
 validate_chain kernel/locking/lockdep.c:3865 [inline]
 __lock_acquire+0x2618/0x7280 kernel/locking/lockdep.c:5171
 lock_acquire+0x210/0x63c kernel/locking/lockdep.c:5790
 _raw_spin_lock_nested+0x5c/0x78 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested kernel/sched/core.c:549 [inline]
 raw_spin_rq_lock kernel/sched/sched.h:1363 [inline]
 rq_lock kernel/sched/sched.h:1653 [inline]
 __schedule+0x2bc/0x1aa4 kernel/sched/core.c:6500
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 io_schedule+0x84/0x154 kernel/sched/core.c:8848
 bit_wait_io+0x1c/0xe8 kernel/sched/wait_bit.c:209
 __wait_on_bit kernel/sched/wait_bit.c:49 [inline]
 out_of_line_wait_on_bit+0x168/0x208 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:101 [inline]
 __wait_on_buffer fs/buffer.c:122 [inline]
 wait_on_buffer include/linux/buffer_head.h:385 [inline]
 __sync_dirty_buffer+0x204/0x2f4 fs/buffer.c:2746
 sync_dirty_buffer+0x24/0x34 fs/buffer.c:2758
 __ext4_handle_dirty_metadata+0x238/0x710 fs/ext4/ext4_jbd2.c:388
 ext4_xattr_inode_write fs/ext4/xattr.c:1394 [inline]
 ext4_xattr_inode_lookup_create+0x10fc/0x19c8 fs/ext4/xattr.c:1553
 ext4_xattr_block_set+0x1d0/0x28f8 fs/ext4/xattr.c:1867
 ext4_xattr_set_handle+0xc00/0x12d4 fs/ext4/xattr.c:2403
 ext4_xattr_set+0x1e8/0x2b4 fs/ext4/xattr.c:2505
 ext4_xattr_trusted_set+0x4c/0x64 fs/ext4/xattr_trusted.c:38
 __vfs_setxattr+0x374/0x390 fs/xattr.c:182
 __vfs_setxattr_noperm+0x120/0x56c fs/xattr.c:216
 __vfs_setxattr_locked+0x1e8/0x214 fs/xattr.c:277
 vfs_setxattr+0x158/0x2a8 fs/xattr.c:309
 do_setxattr fs/xattr.c:594 [inline]
 setxattr+0x258/0x2d8 fs/xattr.c:617
 path_setxattr+0x130/0x260 fs/xattr.c:636
 __do_sys_lsetxattr fs/xattr.c:659 [inline]
 __se_sys_lsetxattr fs/xattr.c:655 [inline]
 __arm64_sys_lsetxattr+0xc4/0xe0 fs/xattr.c:655
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589