Unable to handle kernel paging request at virtual address dfff800000000004
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
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
[dfff800000000004] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7577 Comm: bch-reclaim/loo Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #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 : crypto_skcipher_alg include/crypto/skcipher.h:375 [inline]
pc : crypto_skcipher_encrypt+0x48/0x124 crypto/skcipher.c:637
lr : crypto_skcipher_encrypt+0x24/0x124 crypto/skcipher.c:635
sp : ffff8000a56a6cd0
x29: ffff8000a56a6cd0 x28: efce4bdf00003000 x27: 2000000b9aa2895a
x26: 0000000000000000 x25: ffff700014ad4db8 x24: ffff8000a56a7260
x23: ffff8000a56a7470 x22: 0000000000000008 x21: dfff800000000000
x20: 0000000000000008 x19: ffff8000a56a7260 x18: ffff0000f3201db0
x17: ffff8000829e4e4c x16: ffff80008b5fea08 x15: 0000000000000002
x14: 1ffff00014ad4e52 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700014ad4e54 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000004 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000020
Call trace:
 crypto_skcipher_alg include/crypto/skcipher.h:375 [inline] (P)
 crypto_skcipher_encrypt+0x48/0x124 crypto/skcipher.c:637 (P)
 do_encrypt_sg fs/bcachefs/checksum.c:108 [inline]
 do_encrypt+0x750/0xa80 fs/bcachefs/checksum.c:124
 bch2_encrypt+0x8c/0xb0 fs/bcachefs/checksum.c:255
 bset_encrypt fs/bcachefs/btree_io.h:118 [inline]
 __bch2_btree_node_write+0x1fdc/0x352c fs/bcachefs/btree_io.c:2138
 bch2_btree_node_write+0x6c/0x1a0 fs/bcachefs/btree_io.c:2284
 btree_node_write_if_need fs/bcachefs/btree_io.h:151 [inline]
 __btree_node_flush+0x250/0x2e8 fs/bcachefs/btree_trans_commit.c:252
 bch2_btree_node_flush0+0x38/0x50 fs/bcachefs/btree_trans_commit.c:261
 journal_flush_pins+0x524/0xa10 fs/bcachefs/journal_reclaim.c:565
 __bch2_journal_reclaim+0x728/0xfb0 fs/bcachefs/journal_reclaim.c:698
 bch2_journal_reclaim_thread+0x154/0x4b8 fs/bcachefs/journal_reclaim.c:740
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
Code: 97742104 f9400294 91006280 d343fc08 (38756908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97742104 	bl	0xfffffffffdd08410
   4:	f9400294 	ldr	x20, [x20]
   8:	91006280 	add	x0, x20, #0x18
   c:	d343fc08 	lsr	x8, x0, #3
* 10:	38756908 	ldrb	w8, [x8, x21] <-- trapping instruction