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
CPU: 1 PID: 18786 Comm: syz-executor.3 Not tainted 5.0.0+ #116
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RSP: 0018:ffff8880a4667b98 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8880a4667ca8 RCX: 1ffff1100cf6bd96
RDX: 000000000000000f RSI: ffff888067b5ec90 RDI: 0000000000000078
RBP: ffff8880a4667cd0 R08: ffff888067b5e3c0 R09: ffff888067b5ecb0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888069d0cd00
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808f453d40
FS:  00007fb4357ed700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30124000 CR3: 0000000096ffc000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smc_splice_read+0x2b3/0x450 net/smc/af_smc.c:1886
 sock_splice_read+0xc6/0x140 net/socket.c:881
 do_splice_to+0x12a/0x190 fs/splice.c:880
 do_splice+0x10a0/0x1490 fs/splice.c:1187
 __do_sys_splice fs/splice.c:1428 [inline]
 __se_sys_splice fs/splice.c:1408 [inline]
 __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457f29
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb4357ecc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457f29
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 000000000073bf00 R08: 0000000000000a0e R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb4357ed6d4
R13: 00000000004c6d75 R14: 00000000004db970 R15: 00000000ffffffff
Modules linked in:
kobject: 'loop1' (000000007db53c5a): kobject_uevent_env
kobject: 'loop1' (000000007db53c5a): fill_kobj_path: path = '/devices/virtual/block/loop1'
---[ end trace a5b708588a67a2c7 ]---
kobject: 'loop2' (0000000019ec48a0): kobject_uevent_env
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
kobject: 'loop2' (0000000019ec48a0): fill_kobj_path: path = '/devices/virtual/block/loop2'
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RSP: 0018:ffff8880a4667b98 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8880a4667ca8 RCX: 1ffff1100cf6bd96
kobject: 'loop5' (00000000fc18d62f): kobject_uevent_env
RDX: 000000000000000f RSI: ffff888067b5ec90 RDI: 0000000000000078
RBP: ffff8880a4667cd0 R08: ffff888067b5e3c0 R09: ffff888067b5ecb0
kobject: 'loop5' (00000000fc18d62f): fill_kobj_path: path = '/devices/virtual/block/loop5'
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888069d0cd00
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88808f453d40
kobject: 'loop0' (0000000001ca8250): kobject_uevent_env
FS:  00007fb4357ed700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff41f77cd8 CR3: 0000000096ffc000 CR4: 00000000001406e0
kobject: 'loop0' (0000000001ca8250): fill_kobj_path: path = '/devices/virtual/block/loop0'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400