Unable to handle kernel paging request at virtual address ffff600121520204
KASAN: probably wild-memory-access in range [0xffff00090a901020-0xffff00090a901027]
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
swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000020730e000
[ffff600121520204] pgd=0000000000000000, p4d=0000000233983003, pud=0000000000000000
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 9218 Comm: read_btree_node Not tainted 6.16.0-rc1-syzkaller-g39dfc971e42d #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : unpack_state_init fs/bcachefs/bkey.c:151 [inline]
pc : __bch2_bkey_unpack_key+0x58/0xc00 fs/bcachefs/bkey.c:269
lr : __bch2_bkey_unpack_key+0x3c/0xc00 fs/bcachefs/bkey.c:268
sp : ffff80009be16740
x29: ffff80009be16760 x28: ffff00010a901029 x27: dfff800000000000
x26: 1fffe00021520205 x25: 0000000000000000 x24: 0000000000000000
x23: ffff00010a901028 x22: ffff80009be169f0 x21: ffff0000cc2eb0c0
x20: ffff00090a901020 x19: ffff80009be16880 x18: 1fffe000337dc876
x17: ffff8000827f714c x16: ffff80008ae31308 x15: 0000000000000005
x14: 0000000000000000 x13: 0000000000000004 x12: 0000000000ff0100
x11: ffff0000f9065b80 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 1fffe00121520204 x7 : 0000000000000000 x6 : ffff00010a901028
x5 : ffff0000cc2eb0c0 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : ffff00010a901028 x0 : ffff0000cc2eb0c0
Call trace:
 unpack_state_init fs/bcachefs/bkey.c:151 [inline] (P)
 __bch2_bkey_unpack_key+0x58/0xc00 fs/bcachefs/bkey.c:269 (P)
 __bch2_bkey_compat+0x40c/0x99c fs/bcachefs/bkey_methods.c:480
 bch2_bkey_compat fs/bcachefs/bkey_methods.h:134 [inline]
 validate_bset_keys+0x480/0x1258 fs/bcachefs/btree_io.c:983
 bch2_btree_node_read_done+0x13f8/0x432c fs/bcachefs/btree_io.c:1211
 btree_node_read_work+0x328/0xc1c fs/bcachefs/btree_io.c:1399
 bch2_btree_node_read+0x814/0x23f8 fs/bcachefs/btree_io.c:-1
 bch2_btree_node_fill+0x91c/0xf38 fs/bcachefs/btree_cache.c:994
 bch2_btree_node_get_noiter+0x8b4/0xd80 fs/bcachefs/btree_cache.c:1261
 found_btree_node_is_readable fs/bcachefs/btree_node_scan.c:85 [inline]
 try_read_btree_node fs/bcachefs/btree_node_scan.c:220 [inline]
 read_btree_nodes_worker+0xdf0/0x1734 fs/bcachefs/btree_node_scan.c:269
 kthread+0x5fc/0x75c kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847
Code: 394002b8 51000708 8b284ef4 d343fe88 (387b6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	394002b8 	ldrb	w24, [x21]
   4:	51000708 	sub	w8, w24, #0x1
   8:	8b284ef4 	add	x20, x23, w8, uxtw #3
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	387b6908 	ldrb	w8, [x8, x27] <-- trapping instruction