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