bucket 0:34 gen 0 data type user sector count overflow: 0 + -8 > U32_MAX
while marking u64s 7 type extent 4099:8:U32_MAX len 8 ver 0: durability: 1 crc: c_size 8 size 8 offset 0 nonce 0 csum none 0:0  compress incompressible ptr: 0:34:0 gen 0, continuing
Unable to handle kernel paging request at virtual address dfff800000000013
KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000013] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6420 Comm: syz-executor Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btree_path_lock_root fs/bcachefs/btree_iter.c:732 [inline]
pc : bch2_btree_path_traverse_one+0x738/0x2b30 fs/bcachefs/btree_iter.c:1183
lr : btree_path_lock_root fs/bcachefs/btree_iter.c:728 [inline]
lr : bch2_btree_path_traverse_one+0x714/0x2b30 fs/bcachefs/btree_iter.c:1183
sp : ffff8000a3225000
x29: ffff8000a32252e0 x28: ffff0000f74814d8 x27: ffff0000d6bb0598
x26: 000000000000110b x25: 1fffe0001ee9029b x24: 0000000000000000
x23: ffff8000a3225160 x22: dfff800000000000 x21: ffff0000f7480000
x20: 0000000000000098 x19: 0000000000000000 x18: ffff8000a3225520
x17: 0000000000025f5f x16: ffff80008b60aec8 x15: 0000000000000005
x14: 0000000000000000 x13: 0000000000000003 x12: ffff0000e5cd8000
x11: ffff8000a3225180 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000013 x7 : 0000000000000000 x6 : 0000000100000000
x5 : ffff0000d6bb0598 x4 : 0000000000000000 x3 : ffff800082907760
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 btree_path_lock_root fs/bcachefs/btree_iter.c:732 [inline] (P)
 bch2_btree_path_traverse_one+0x738/0x2b30 fs/bcachefs/btree_iter.c:1183 (P)
 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline]
 __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2210 [inline]
 bch2_btree_iter_peek_upto+0xafc/0x54f8 fs/bcachefs/btree_iter.c:2310
 bch2_btree_iter_peek_upto_type fs/bcachefs/btree_iter.h:685 [inline]
 bch2_bucket_alloc_freelist fs/bcachefs/alloc_foreground.c:495 [inline]
 bch2_bucket_alloc_trans+0x8b4/0x25e4 fs/bcachefs/alloc_foreground.c:648
 bch2_bucket_alloc_set_trans+0x4ac/0xa10 fs/bcachefs/alloc_foreground.c:808
 __open_bucket_add_buckets+0x1168/0x1a68 fs/bcachefs/alloc_foreground.c:1057
 open_bucket_add_buckets+0x2d8/0x3b4 fs/bcachefs/alloc_foreground.c:1101
 bch2_alloc_sectors_start_trans+0xa84/0x199c
 __bch2_btree_node_alloc fs/bcachefs/btree_update_interior.c:339 [inline]
 bch2_btree_reserve_get+0x500/0xf70 fs/bcachefs/btree_update_interior.c:549
 bch2_btree_update_start+0xe14/0x15ac fs/bcachefs/btree_update_interior.c:1247
 bch2_btree_split_leaf+0x118/0x7b0 fs/bcachefs/btree_update_interior.c:1856
 bch2_trans_commit_error+0x2a8/0x1130 fs/bcachefs/btree_trans_commit.c:942
 __bch2_trans_commit+0x2a80/0x6604 fs/bcachefs/btree_trans_commit.c:1140
 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline]
 bch2_inode_delete_keys+0x6d0/0xc78 fs/bcachefs/inode.c:986
 bch2_inode_rm+0x18c/0x7fc fs/bcachefs/inode.c:1015
 bch2_evict_inode+0x1b4/0x368 fs/bcachefs/fs.c:1836
 evict+0x444/0x978 fs/inode.c:796
 iput_final fs/inode.c:1946 [inline]
 iput+0x740/0x8e8 fs/inode.c:1972
 do_unlinkat+0x528/0x700 fs/namei.c:4594
 __do_sys_unlinkat fs/namei.c:4630 [inline]
 __se_sys_unlinkat fs/namei.c:4623 [inline]
 __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:4623
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 97896fc4 f9400398 91026314 d343fe88 (38f66908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97896fc4 	bl	0xfffffffffe25bf10
   4:	f9400398 	ldr	x24, [x28]
   8:	91026314 	add	x20, x24, #0x98
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	38f66908 	ldrsb	w8, [x8, x22] <-- trapping instruction