audit: type=1400 audit(1567429156.168:36): avc: denied { map } for pid=6867 comm="syz-executor924" path="/root/syz-executor924321400" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 6867 Comm: syz-executor924 Not tainted 4.14.141 #37 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a6342600 task.stack: ffff88809ef60000 RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:95 [inline] RIP: 0010:scatterwalk_copychunks+0x4d6/0x6b0 crypto/scatterwalk.c:55 RSP: 0018:ffff88809ef67648 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000001000 RCX: ffff88808f2431f4 RDX: 0000000000000002 RSI: ffff8880a890c000 RDI: ffff88808f2431e8 RBP: ffff88809ef676b8 R08: ffffed1010d7a36a R09: 0000000000000002 R10: ffffed1010d7a369 R11: ffff888086bd1b4c R12: 0000000000001000 R13: 0000000000000000 R14: ffff88809ef67710 R15: 0000000000003000 FS: 0000000000f3a880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe8d453ab0 CR3: 000000008fc78000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: scatterwalk_map_and_copy crypto/scatterwalk.c:72 [inline] scatterwalk_map_and_copy+0x12f/0x1d0 crypto/scatterwalk.c:60 gcmaes_encrypt.constprop.0+0x1d2/0xb90 arch/x86/crypto/aesni-intel_glue.c:778 generic_gcmaes_encrypt+0xf4/0x130 arch/x86/crypto/aesni-intel_glue.c:1111 crypto_aead_encrypt include/crypto/aead.h:330 [inline] gcmaes_wrapper_encrypt+0xef/0x150 arch/x86/crypto/aesni-intel_glue.c:945 crypto_aead_encrypt include/crypto/aead.h:330 [inline] tls_do_encryption net/tls/tls_sw.c:234 [inline] tls_push_record+0x906/0x1210 net/tls/tls_sw.c:270 tls_sw_sendpage+0x434/0xb50 net/tls/tls_sw.c:617 inet_sendpage+0x157/0x580 net/ipv4/af_inet.c:779 kernel_sendpage+0x92/0xf0 net/socket.c:3406 sock_sendpage+0x8b/0xc0 net/socket.c:871 pipe_to_sendpage+0x242/0x340 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x348/0x780 fs/splice.c:626 splice_from_pipe+0xf0/0x150 fs/splice.c:661 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0xd92/0x1430 fs/splice.c:1382 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x440379 RSP: 002b:00007ffc91aa9098 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000100000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c00 R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000 Code: 00 00 fc ff df 80 3c 02 00 0f 85 37 01 00 00 49 8d 45 10 4d 89 2e 48 89 c2 48 89 45 c0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 7d 01 00 00 48 b8 00 00 00 RIP: scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RSP: ffff88809ef67648 RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RSP: ffff88809ef67648 RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:95 [inline] RSP: ffff88809ef67648 RIP: scatterwalk_copychunks+0x4d6/0x6b0 crypto/scatterwalk.c:55 RSP: ffff88809ef67648 ---[ end trace 0503b9ef08c715bc ]---