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: 23096 Comm: syz-executor.1 Not tainted 4.14.198-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a8e3a080 task.stack: ffff8880564b8000 RIP: 0010:tcp_splice_read+0x123/0x950 net/ipv4/tcp.c:779 RSP: 0018:ffff8880564bfc40 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110151c752f RDX: 000000000000000f RSI: ffff8880a8e3a958 RDI: 0000000000000078 RBP: ffff88805146f500 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880564bfea8 R13: 0000000000000000 R14: ffff8880a0080cc0 R15: 0000000000000000 FS: 00007fdd55762700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff78f90b00 CR3: 0000000050a1a000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smc_splice_read+0x16c/0x1c0 net/smc/af_smc.c:1304 sock_splice_read+0xa6/0xe0 net/socket.c:883 do_splice_to+0xfb/0x140 fs/splice.c:880 do_splice fs/splice.c:1173 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x104a/0x1380 fs/splice.c:1382 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45dd99 RSP: 002b:00007fdd55761c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00000000000350c0 RCX: 000000000045dd99 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 000000000118bf78 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007fffd02bf39f R14: 00007fdd557629c0 R15: 000000000118bf2c Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c9 07 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 18 48 8d 7b 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e db 06 00 00 45 31 e4 f6 43 RIP: tcp_splice_read+0x123/0x950 net/ipv4/tcp.c:779 RSP: ffff8880564bfc40 ---[ end trace bd0b752dc9b2337d ]---