general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 1 PID: 5425 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:crypto_shash_alg include/crypto/hash.h:827 [inline] RIP: 0010:crypto_shash_update crypto/shash.c:124 [inline] RIP: 0010:shash_ahash_update crypto/shash.c:306 [inline] RIP: 0010:shash_async_update+0xe2/0x1f0 crypto/shash.c:314 Code: e8 83 d5 ff ff 85 c0 89 c2 7e 75 41 80 3c 24 00 48 8b 74 24 40 0f 85 a8 00 00 00 4c 8b 7d 50 49 8d 7f 20 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 c6 00 00 00 4d 8b 7f 20 49 8d 7f 2c 48 89 f8 48 RSP: 0018:ffffc900048df970 EFLAGS: 00010202 RAX: 0000000000000004 RBX: dffffc0000000000 RCX: dffffc0000000000 RDX: 0000000000000dc0 RSI: ffff88807100c240 RDI: 0000000000000020 RBP: ffff88801ee932a8 R08: ffff88801ee932a8 R09: 000000000000fdc0 R10: 7fffffffffff023f R11: ffffed1003dd2601 R12: ffffed1003dd265f R13: ffff88801ee932f8 R14: 1ffff9200091bf30 R15: 0000000000000000 FS: 00007fb2a1d18700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000100 CR3: 0000000025ffe000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: crypto_ahash_update include/crypto/hash.h:608 [inline] hash_sendmsg+0x314/0xc60 crypto/algif_hash.c:139 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0xc0/0x150 net/socket.c:747 ____sys_sendmsg+0x5e5/0x880 net/socket.c:2505 ___sys_sendmsg+0xdb/0x160 net/socket.c:2559 __sys_sendmsg+0xc7/0x160 net/socket.c:2588 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb2a108c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb2a1d18168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb2a11abf80 RCX: 00007fb2a108c169 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000004 RBP: 00007fb2a10e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffecd1b062f R14: 00007fb2a1d18300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:crypto_shash_alg include/crypto/hash.h:827 [inline] RIP: 0010:crypto_shash_update crypto/shash.c:124 [inline] RIP: 0010:shash_ahash_update crypto/shash.c:306 [inline] RIP: 0010:shash_async_update+0xe2/0x1f0 crypto/shash.c:314 Code: e8 83 d5 ff ff 85 c0 89 c2 7e 75 41 80 3c 24 00 48 8b 74 24 40 0f 85 a8 00 00 00 4c 8b 7d 50 49 8d 7f 20 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 c6 00 00 00 4d 8b 7f 20 49 8d 7f 2c 48 89 f8 48 RSP: 0018:ffffc900048df970 EFLAGS: 00010202 RAX: 0000000000000004 RBX: dffffc0000000000 RCX: dffffc0000000000 RDX: 0000000000000dc0 RSI: ffff88807100c240 RDI: 0000000000000020 RBP: ffff88801ee932a8 R08: ffff88801ee932a8 R09: 000000000000fdc0 R10: 7fffffffffff023f R11: ffffed1003dd2601 R12: ffffed1003dd265f R13: ffff88801ee932f8 R14: 1ffff9200091bf30 R15: 0000000000000000 FS: 00007fb2a1d18700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563070b13131 CR3: 0000000025ffe000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 83 d5 ff ff callq 0xffffd588 5: 85 c0 test %eax,%eax 7: 89 c2 mov %eax,%edx 9: 7e 75 jle 0x80 b: 41 80 3c 24 00 cmpb $0x0,(%r12) 10: 48 8b 74 24 40 mov 0x40(%rsp),%rsi 15: 0f 85 a8 00 00 00 jne 0xc3 1b: 4c 8b 7d 50 mov 0x50(%rbp),%r15 1f: 49 8d 7f 20 lea 0x20(%r15),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction 2e: 0f 85 c6 00 00 00 jne 0xfa 34: 4d 8b 7f 20 mov 0x20(%r15),%r15 38: 49 8d 7f 2c lea 0x2c(%r15),%rdi 3c: 48 89 f8 mov %rdi,%rax 3f: 48 rex.W