bcachefs (loop3): initializing new filesystem
bcachefs (loop3): going read-write
bcachefs (loop3): marking superblocks
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: 1 UID: 0 PID: 6672 Comm: syz.3.25 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 60400005 (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 : ffff80009c1c5150
x29: ffff80009c1c5150 x28: 5da6969b00000000 x27: 2000000033a5b6b4
x26: 0000000000000000 x25: ffff700013838a48 x24: ffff80009c1c56e0
x23: ffff80009c1c58f0 x22: 0000000000000008 x21: dfff800000000000
x20: 0000000000000008 x19: ffff80009c1c56e0 x18: ffff80009c1c5040
x17: 00000000000270a5 x16: ffff80008b63c748 x15: 0000000000000002
x14: 1ffff00013838ae2 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a63e1000
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:110 [inline]
 __bch2_btree_node_write+0x202c/0x352c fs/bcachefs/btree_io.c:2138
 bch2_btree_node_write+0x6c/0x1a0 fs/bcachefs/btree_io.c:2284
 btree_split+0x3950/0x4f40 fs/bcachefs/btree_update_interior.c:1711
 bch2_btree_split_leaf+0x144/0x7b0 fs/bcachefs/btree_update_interior.c:1862
 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_trans_mark_metadata_bucket+0x3bc/0x1188 fs/bcachefs/buckets.c:1048
 bch2_trans_mark_metadata_sectors fs/bcachefs/buckets.c:1065 [inline]
 __bch2_trans_mark_dev_sb fs/bcachefs/buckets.c:1105 [inline]
 bch2_trans_mark_dev_sb+0x330/0x6c8 fs/bcachefs/buckets.c:1133
 bch2_trans_mark_dev_sbs_flags+0x754/0x7b4 fs/bcachefs/buckets.c:1143
 bch2_trans_mark_dev_sbs+0x24/0x34 fs/bcachefs/buckets.c:1155
 bch2_fs_initialize+0xa40/0x1d0c fs/bcachefs/recovery.c:1074
 bch2_fs_start+0x2fc/0x53c fs/bcachefs/super.c:1038
 bch2_fs_get_tree+0x938/0x1030 fs/bcachefs/fs.c:2170
 vfs_get_tree+0x90/0x28c fs/super.c:1814
 do_new_mount+0x278/0x900 fs/namespace.c:3511
 path_mount+0x590/0xe04 fs/namespace.c:3838
 do_mount fs/namespace.c:3851 [inline]
 __do_sys_mount fs/namespace.c:4061 [inline]
 __se_sys_mount fs/namespace.c:4038 [inline]
 __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4038
 __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: 97742307 f9400294 91006280 d343fc08 (38756908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97742307 	bl	0xfffffffffdd08c1c
   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