general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 3553 Comm: kworker/u4:4 Not tainted 5.15.107-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Workqueue: pencrypt_parallel padata_parallel_worker RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:68 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:88 [inline] RIP: 0010:scatterwalk_copychunks+0x3c1/0x5a0 crypto/scatterwalk.c:50 Code: 3c 10 00 4c 8b 7c 24 10 74 12 4c 89 ff e8 d7 70 f9 fd 48 ba 00 00 00 00 00 fc ff df 49 89 2f 48 83 c5 08 48 89 e8 48 c1 e8 03 <0f> b6 04 10 84 c0 4c 8b 2c 24 0f 85 5a 01 00 00 8b 5d 00 48 8b 44 RSP: 0018:ffffc9000385f530 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff88801a77ba00 RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000008 R08: ffffffff8403348e R09: fffffbfff1f76e62 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc9000385f9b0 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020006b40 CR3: 00000000279d6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skcipher_next_slow+0x39d/0x470 crypto/skcipher.c:278 skcipher_walk_next+0x630/0xba0 crypto/skcipher.c:363 skcipher_walk_first crypto/skcipher.c:446 [inline] skcipher_walk_aead_common+0x898/0xef0 crypto/skcipher.c:539 gcmaes_crypt_by_sg+0x460/0xa30 arch/x86/crypto/aesni-intel_glue.c:658 gcmaes_encrypt arch/x86/crypto/aesni-intel_glue.c:722 [inline] generic_gcmaes_encrypt+0x1cd/0x380 arch/x86/crypto/aesni-intel_glue.c:1076 pcrypt_aead_enc+0x13/0x70 crypto/pcrypt.c:83 padata_parallel_worker+0x5a/0x1a0 kernel/padata.c:144 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2306 worker_thread+0xaca/0x1280 kernel/workqueue.c:2453 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Modules linked in: ---[ end trace d6093865241c1584 ]--- RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:68 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:88 [inline] RIP: 0010:scatterwalk_copychunks+0x3c1/0x5a0 crypto/scatterwalk.c:50 Code: 3c 10 00 4c 8b 7c 24 10 74 12 4c 89 ff e8 d7 70 f9 fd 48 ba 00 00 00 00 00 fc ff df 49 89 2f 48 83 c5 08 48 89 e8 48 c1 e8 03 <0f> b6 04 10 84 c0 4c 8b 2c 24 0f 85 5a 01 00 00 8b 5d 00 48 8b 44 RSP: 0018:ffffc9000385f530 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff88801a77ba00 RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000008 R08: ffffffff8403348e R09: fffffbfff1f76e62 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc9000385f9b0 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020006b40 CR3: 00000000279d6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3c 10 cmp $0x10,%al 2: 00 4c 8b 7c add %cl,0x7c(%rbx,%rcx,4) 6: 24 10 and $0x10,%al 8: 74 12 je 0x1c a: 4c 89 ff mov %r15,%rdi d: e8 d7 70 f9 fd callq 0xfdf970e9 12: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 19: fc ff df 1c: 49 89 2f mov %rbp,(%r15) 1f: 48 83 c5 08 add $0x8,%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 4c 8b 2c 24 mov (%rsp),%r13 34: 0f 85 5a 01 00 00 jne 0x194 3a: 8b 5d 00 mov 0x0(%rbp),%ebx 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 44 rex.R