el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5011 at fs/btrfs/inode.c:6761 btrfs_add_link+0x7ac/0xbcc fs/btrfs/inode.c:6761
Modules linked in:
CPU: 0 PID: 5011 Comm: syz.4.165 Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_add_link+0x7ac/0xbcc fs/btrfs/inode.c:6761
lr : btrfs_add_link+0x7ac/0xbcc fs/btrfs/inode.c:6761
sp : ffff8000208f7940
x29: ffff8000208f7a40 x28: 0000000000000100 x27: 0000000000000107
x26: 00000000fffffff4 x25: 0000000000000001 x24: ffff70000411ef30
x23: dfff800000000000 x22: 00000000fffffff4 x21: ffff0000ef4062c0
x20: 1fffe0001de80c63 x19: ffff0000ef406318 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011b5ac80 x15: 00000000ffffffff
x14: ffff0000caf58000 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : e32007d1a3d89d00
x8 : e32007d1a3d89d00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000208f70b8 x4 : ffff800014c4fe40 x3 : ffff800008557710
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_add_link+0x7ac/0xbcc fs/btrfs/inode.c:6761
 btrfs_add_nondir fs/btrfs/inode.c:6812 [inline]
 btrfs_link+0x3a0/0x678 fs/btrfs/inode.c:6994
 vfs_link+0x598/0x74c fs/namei.c:4557
 do_linkat+0x2f4/0x898 fs/namei.c:4628
 __do_sys_linkat fs/namei.c:4656 [inline]
 __se_sys_linkat fs/namei.c:4653 [inline]
 __arm64_sys_linkat+0xe4/0x100 fs/namei.c:4653
 __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: 81438
hardirqs last  enabled at (81437): [<ffff80000832c93c>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (81438): [<ffff800011b56334>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (81414): [<ffff8000081b70b8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (81414): [<ffff8000081b70b8>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (81379): [<ffff8000081b7750>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (81379): [<ffff8000081b7750>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (81379): [<ffff8000081b7750>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (81379): [<ffff8000081b7750>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace ca726eb3215ae567 ]---
BTRFS: error (device loop4) in btrfs_add_link:6761: errno=-12 Out of memory
BTRFS info (device loop4): forced readonly