loop6: detected capacity change from 0 to 32768 BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop6 scanned by syz.6.3680 (18098) BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 18098 Comm: syz.6.3680 Not tainted 6.1.119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline] validate_chain kernel/locking/lockdep.c:3793 [inline] __lock_acquire+0x1b88/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162 __wake_up_common_lock kernel/sched/wait.c:137 [inline] __wake_up+0xec/0x1a8 kernel/sched/wait.c:160 ep_poll_callback+0x614/0x974 fs/eventpoll.c:1239 __wake_up_common+0x23c/0x3bc kernel/sched/wait.c:107 __wake_up_common_lock kernel/sched/wait.c:138 [inline] __wake_up_sync_key+0x114/0x1ac kernel/sched/wait.c:208 sock_def_readable+0x150/0x278 net/core/sock.c:3305 __netlink_sendskb net/netlink/af_netlink.c:1258 [inline] netlink_broadcast_deliver net/netlink/af_netlink.c:1388 [inline] do_one_broadcast net/netlink/af_netlink.c:1466 [inline] netlink_broadcast+0x9e8/0xff4 net/netlink/af_netlink.c:1506 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline] kobject_uevent_net_broadcast+0x328/0x528 lib/kobject_uevent.c:409 kobject_uevent_env+0x530/0x874 lib/kobject_uevent.c:608 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:657 device_add+0xa14/0xef4 drivers/base/core.c:3670 device_create_groups_vargs+0x1e0/0x278 drivers/base/core.c:4383 device_create+0x100/0x154 drivers/base/core.c:4425 bdi_register_va+0x144/0x880 mm/backing-dev.c:877 super_setup_bdi_name+0xf4/0x1f8 fs/super.c:1632 super_setup_bdi+0x98/0xd8 fs/super.c:1654 btrfs_fill_super+0x190/0x2c8 fs/btrfs/super.c:1463 btrfs_mount_root+0x6f8/0x7f8 fs/btrfs/super.c:1835 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 fc_mount fs/namespace.c:1043 [inline] vfs_kern_mount+0xdc/0x178 fs/namespace.c:1073 btrfs_mount+0x330/0x9c8 fs/btrfs/super.c:1895 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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:585 BTRFS info (device loop6): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf BTRFS info (device loop6): using crc32c (crc32c-generic) checksum algorithm BTRFS info (device loop6): setting nodatacow, compression disabled BTRFS info (device loop6): max_inline at 0 BTRFS info (device loop6): enabling disk space caching BTRFS info (device loop6): turning off barriers BTRFS info (device loop6): turning on flush-on-commit BTRFS info (device loop6): doing ref verification BTRFS info (device loop6): force clearing of disk cache BTRFS info (device loop6): enabling ssd optimizations BTRFS info (device loop6): max_inline at 4096 BTRFS info (device loop6): disk space caching is enabled BTRFS info (device loop6): rebuilding free space tree BTRFS info (device loop6): disabling free space tree BTRFS info (device loop6): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) BTRFS info (device loop6): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)