el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4949 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6bc/0x9bc fs/btrfs/free-space-tree.c:1267
Modules linked in:
CPU: 0 PID: 4949 Comm: syz-executor.0 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_clear_free_space_tree+0x6bc/0x9bc fs/btrfs/free-space-tree.c:1267
lr : btrfs_clear_free_space_tree+0x6bc/0x9bc fs/btrfs/free-space-tree.c:1267
sp : ffff800020ad77a0
x29: ffff800020ad7840 x28: 1fffe00019be100b x27: dfff800000000000
x26: ffff70000415aef8 x25: ffff0000d6a540bb x24: ffff0000ded54000
x23: 0000000000000006 x22: 00000000fffffff4 x21: ffff0000cdf099d0
x20: ffff0000ded54058 x19: 1fffe0001bdaa80b x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011ac23e0 x15: 00000000ffffffff
x14: ffff0000c6658000 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : 7b765c2a9cd3e300
x8 : 7b765c2a9cd3e300 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020ad6f18 x4 : ffff800014b9fae0 x3 : ffff800008557c4c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_clear_free_space_tree+0x6bc/0x9bc fs/btrfs/free-space-tree.c:1267
 btrfs_start_pre_rw_mount+0x24c/0x578 fs/btrfs/disk-io.c:3079
 btrfs_remount+0xb88/0x130c fs/btrfs/super.c:2082
 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:634
 reconfigure_super+0x1d0/0x6ec fs/super.c:936
 do_remount fs/namespace.c:2661 [inline]
 path_mount+0xbec/0x101c fs/namespace.c:3327
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount fs/namespace.c:3533 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3533
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 80794
hardirqs last  enabled at (80793): [<ffff80000832c17c>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (80794): [<ffff800011abda6c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (80770): [<ffff8000081b6d74>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (80770): [<ffff8000081b6d74>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (80747): [<ffff8000081b740c>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (80747): [<ffff8000081b740c>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (80747): [<ffff8000081b740c>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (80747): [<ffff8000081b740c>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace eaa9b2e07bf4186b ]---
BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory
BTRFS warning (device loop0): failed to clear free space tree: -12