RAX: ffffffffffffffda RBX: 00007fc41c7b06d4 RCX: 0000000000455e29 RDX: 00000000200000c0 RSI: 0000000000000015 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000016 R13: 00000000004c1113 R14: 00000000004d1540 R15: 0000000000000009 BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 PGD 800000010de22067 P4D 800000010de22067 PUD 10c195067 PMD 0 Oops: 0000 [#1] SMP PTI CPU: 1 PID: 17673 Comm: syz-executor2 Not tainted 4.18.0-rc4+ #24 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RIP: 0010:scatterwalk_copychunks+0x649/0x810 crypto/scatterwalk.c:55 Code: 00 00 4c 89 23 4d 85 e4 0f 85 6d 01 00 00 48 8b 45 a0 48 89 c3 48 83 c3 08 49 89 45 00 4c 89 65 a8 4d 85 e4 0f 85 6d 01 00 00 <44> 8b 3b 48 89 df e8 1c a7 f3 fd 44 8b 20 8b 02 89 45 cc 4c 89 f7 RSP: 0018:ffff88010de7ee50 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff88010c12efb0 RDX: ffff88010c12efb0 RSI: aaaaaaaaaaaab000 RDI: ffffea0006536f40 RBP: ffff88010de7ef20 R08: ffffffff7fffffff R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff83db4020 R12: 0000000000000000 R13: ffff88010de7efb0 R14: ffff88010de7efb8 R15: ffff88010c12efb0 FS: 00007fc41c7b0700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000104df0000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: scatterwalk_map_and_copy+0x62a/0x6e0 crypto/scatterwalk.c:72 gcm_enc_copy_hash+0x20c/0x2a0 crypto/gcm.c:440 gcm_hash_len_continue crypto/gcm.c:268 [inline] gcm_hash_crypt_remain_continue+0x43f/0x5f0 crypto/gcm.c:289 gcm_hash_assoc_continue crypto/gcm.c:320 [inline] gcm_hash_init_continue crypto/gcm.c:400 [inline] gcm_hash+0x1e56/0x24d0 crypto/gcm.c:430 gcm_encrypt_continue crypto/gcm.c:455 [inline] crypto_gcm_encrypt+0xa18/0xb00 crypto/gcm.c:484 crypto_aead_encrypt include/crypto/aead.h:335 [inline] tls_do_encryption net/tls/tls_sw.c:211 [inline] tls_push_record+0xccc/0x1f60 net/tls/tls_sw.c:247 tls_sw_sendpage+0x1462/0x1a10 net/tls/tls_sw.c:601 inet_sendpage+0x505/0x8f0 net/ipv4/af_inet.c:815 kernel_sendpage net/socket.c:3331 [inline] sock_sendpage+0x1ef/0x2e0 net/socket.c:866 pipe_to_sendpage+0x317/0x440 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x4a5/0xf50 fs/splice.c:627 splice_from_pipe fs/splice.c:662 [inline] generic_splice_sendpage+0x1d9/0x2d0 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x19e/0x200 fs/splice.c:1019 splice_direct_to_actor+0x78a/0x1090 fs/splice.c:974 do_splice_direct+0x351/0x5a0 fs/splice.c:1062 do_sendfile+0x10ab/0x1e80 fs/read_write.c:1440 __do_sys_sendfile64 fs/read_write.c:1495 [inline] __se_sys_sendfile64 fs/read_write.c:1487 [inline] __x64_sys_sendfile64+0x228/0x3b0 fs/read_write.c:1487 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455e29 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc41c7afc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fc41c7b06d4 RCX: 0000000000455e29 RDX: 00000000200000c0 RSI: 0000000000000015 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000016 R13: 00000000004c1113 R14: 00000000004d1540 R15: 0000000000000009 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) CR2: 0000000000000008 ---[ end trace ab073f8b1b260c09 ]--- RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RIP: 0010:scatterwalk_copychunks+0x649/0x810 crypto/scatterwalk.c:55 Code: 00 00 4c 89 23 4d 85 e4 0f 85 6d 01 00 00 48 8b 45 a0 48 89 c3 48 83 c3 08 49 89 45 00 4c 89 65 a8 4d 85 e4 0f 85 6d 01 00 00 <44> 8b 3b 48 89 df e8 1c a7 f3 fd 44 8b 20 8b 02 89 45 cc 4c 89 f7 RSP: 0018:ffff88010de7ee50 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000008 RCX: ffff88010c12efb0 RDX: ffff88010c12efb0 RSI: aaaaaaaaaaaab000 RDI: ffffea0006536f40 RBP: ffff88010de7ef20 R08: ffffffff7fffffff R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff83db4020 R12: 0000000000000000 R13: ffff88010de7efb0 R14: ffff88010de7efb8 R15: ffff88010c12efb0 FS: 00007fc41c7b0700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000104df0000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400