kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9936 Comm: syz-executor.2 Not tainted 4.19.134-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tcp_splice_read+0x140/0xb30 net/ipv4/tcp.c:807
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a8 09 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 a6 08 00 00 8b 5b 78 31 ff 45
RSP: 0018:ffff88804aad7c10 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101250bdaf
RDX: 000000000000000f RSI: ffff88809285ed58 RDI: 0000000000000078
RBP: ffff88808c904c40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88804aad7eb0
R13: 0000000000000000 R14: ffff8880a6618a40 R15: 0000000000000000
FS:  00007f6cd77bd700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000b90004 CR3: 00000000930bb000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smc_splice_read+0x1d1/0x2c0 net/smc/af_smc.c:1855
 sock_splice_read+0xa6/0xe0 net/socket.c:859
 do_splice_to+0x10e/0x160 fs/splice.c:881
 do_splice fs/splice.c:1186 [inline]
 __do_sys_splice fs/splice.c:1428 [inline]
 __se_sys_splice+0x135f/0x16d0 fs/splice.c:1408
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c369
Code: 8d b6 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 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6cd77bcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000032240 RCX: 000000000045c369
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 000000000078bff8 R08: 000000000000000b R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bfac
R13: 00007ffe82779f6f R14: 00007f6cd77bd9c0 R15: 000000000078bfac
Modules linked in:
---[ end trace da45c14300724aa8 ]---
RIP: 0010:tcp_splice_read+0x140/0xb30 net/ipv4/tcp.c:807
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a8 09 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 a6 08 00 00 8b 5b 78 31 ff 45
RSP: 0018:ffff88804aad7c10 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101250bdaf
RDX: 000000000000000f RSI: ffff88809285ed58 RDI: 0000000000000078
RBP: ffff88808c904c40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88804aad7eb0
R13: 0000000000000000 R14: ffff8880a6618a40 R15: 0000000000000000
FS:  00007f6cd77bd700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe85327c30 CR3: 00000000930bb000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400