bcachefs (loop1): mounting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,nojournal_transaction_names
bcachefs (loop1): recovering from clean shutdown, journal seq 8
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 0 PID: 7123 Comm: syz-executor.1 Not tainted 6.10.0-rc2-syzkaller-00064-g71d7b52cc33b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:crypto_skcipher_alg include/crypto/skcipher.h:375 [inline]
RIP: 0010:crypto_skcipher_encrypt+0x45/0x130 crypto/skcipher.c:637
Code: 2a fd 49 8d 5e 40 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 19 0c 8d fd 48 8b 1b 48 8d 7b 18 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 ff 0b 8d fd 4c 8b 7b 18 48 83 c3 04 48 89
RSP: 0000:ffffc900095a5dd8 EFLAGS: 00010202
RAX: 0000000000000004 RBX: 0000000000000008 RCX: 0000000000040000
RDX: ffffc9000f2f7000 RSI: 000000000003ffff RDI: 0000000000000020
RBP: ffffc900095a6370 R08: ffffc900095a5edf R09: 0000000000000000
R10: ffffc900095a5ed0 R11: fffff520012b4bdc R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffc900095a5ea0 R15: 1ffff920012b4bcc
FS:  00007f9c020066c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00b2320000 CR3: 000000006995c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_encrypt_sg fs/bcachefs/checksum.c:108 [inline]
 do_encrypt+0x66b/0x7d0 fs/bcachefs/checksum.c:150
 gen_poly_key fs/bcachefs/checksum.c:191 [inline]
 bch2_checksum+0x1fc/0x770 fs/bcachefs/checksum.c:227
 bch2_btree_node_read_done+0x13de/0x6750 fs/bcachefs/btree_io.c:1115
 btree_node_read_work+0x68b/0x1260 fs/bcachefs/btree_io.c:1345
 bch2_btree_node_read+0x2433/0x2a10
 __bch2_btree_root_read fs/bcachefs/btree_io.c:1769 [inline]
 bch2_btree_root_read+0x61e/0x970 fs/bcachefs/btree_io.c:1793
 read_btree_roots+0x22d/0x7b0 fs/bcachefs/recovery.c:475
 bch2_fs_recovery+0x2346/0x3720 fs/bcachefs/recovery.c:803
----------------
Code disassembly (best guess):
   0:	2a fd                	sub    %ch,%bh
   2:	49 8d 5e 40          	lea    0x40(%r14),%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 19 0c 8d fd       	call   0xfd8d0c35
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 8d 7b 18          	lea    0x18(%rbx),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 ff 0b 8d fd       	call   0xfd8d0c35
  36:	4c 8b 7b 18          	mov    0x18(%rbx),%r15
  3a:	48 83 c3 04          	add    $0x4,%rbx
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89