el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4903 at fs/btrfs/extent-tree.c:2158 btrfs_run_delayed_refs+0x408/0x47c fs/btrfs/extent-tree.c:2158 Modules linked in: CPU: 0 PID: 4903 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_run_delayed_refs+0x408/0x47c fs/btrfs/extent-tree.c:2158 lr : btrfs_run_delayed_refs+0x408/0x47c fs/btrfs/extent-tree.c:2158 sp : ffff8000204f7530 x29: ffff8000204f7540 x28: dfff800000000000 x27: ffff0000ce3f0024 x26: 00000000fffffff4 x25: ffff0000c5201318 x24: 1fffe00018a40263 x23: ffff0000c5201318 x22: 0000000000000000 x21: 0000000000000006 x20: ffff0000ce3f0000 x19: ffff0000c52012c0 x18: 0000000000000001 x17: 0000000000000000 x16: ffff800011ac23e0 x15: 00000000ffffffff x14: ffff0000ce1f3680 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : 2553c53fe7848b00 x8 : 2553c53fe7848b00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000204f6c98 x4 : ffff800014b9fae0 x3 : ffff800008557c4c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 Call trace: btrfs_run_delayed_refs+0x408/0x47c fs/btrfs/extent-tree.c:2158 btrfs_commit_transaction+0x1b8/0x30f0 fs/btrfs/transaction.c:2166 btrfs_sync_fs+0x678/0xc94 fs/btrfs/super.c:1454 sync_filesystem+0x1a0/0x218 fs/sync.c:66 btrfs_remount+0x198/0x130c fs/btrfs/super.c:1928 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: 82018 hardirqs last enabled at (82017): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (82018): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (81988): [] softirq_handle_end kernel/softirq.c:401 [inline] softirqs last enabled at (81988): [] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586 softirqs last disabled at (81937): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (81937): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (81937): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (81937): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 7c6a352a9bdcb7bd ]--- BTRFS: error (device loop0) in btrfs_run_delayed_refs:2158: errno=-12 Out of memory BTRFS info (device loop0): forced readonly BTRFS error (device loop0): Remounting read-write after error is not allowed