IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
kasan: CONFIG_KASAN_INLINE enabled
IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12149 Comm: syz-executor4 Not tainted 4.20.0+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tcp_splice_read+0x1eb/0xf20 net/ipv4/tcp.c:799
kobject: 'loop5' (00000000916c4b95): kobject_uevent_env
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8a 0c 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 c7 0a 00 00 8b 5b 78 31 ff 45
kobject: 'loop5' (00000000916c4b95): fill_kobj_path: path = '/devices/virtual/block/loop5'
RSP: 0018:ffff888068c57aa0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101275e9de
RDX: 000000000000000f RSI: 0000000000000000 RDI: 0000000000000078
RBP: ffff888068c57c20 R08: 0000000000000006 R09: ffff888093af4ef0
R10: ffff888093af4600 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000003 R14: ffff888068c57bf8 R15: ffff88806013ad40
FS:  00007f5ee63e8700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop2' (00000000b659a252): kobject_uevent_env
CR2: 00000000004efe78 CR3: 0000000090b09000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'loop2' (00000000b659a252): fill_kobj_path: path = '/devices/virtual/block/loop2'
 smc_splice_read+0x26c/0x390 net/smc/af_smc.c:1853
 sock_splice_read+0xc6/0x140 net/socket.c:858
 do_splice_to+0x12a/0x190 fs/splice.c:880
 do_splice+0xff7/0x1410 fs/splice.c:1178
 __do_sys_splice fs/splice.c:1419 [inline]
 __se_sys_splice fs/splice.c:1399 [inline]
 __x64_sys_splice+0x2c6/0x330 fs/splice.c:1399
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5ee63e7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457ec9
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005
kobject: 'loop0' (000000004e5fe11a): kobject_uevent_env
RBP: 000000000073bfa0 R08: 0000000000010005 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ee63e86d4
R13: 00000000004c6b03 R14: 00000000004db2a8 R15: 00000000ffffffff
Modules linked in:
kobject: 'loop0' (000000004e5fe11a): fill_kobj_path: path = '/devices/virtual/block/loop0'
---[ end trace f8a9524aa782d677 ]---
kobject: 'loop3' (000000001e9b8ab0): kobject_uevent_env
RIP: 0010:tcp_splice_read+0x1eb/0xf20 net/ipv4/tcp.c:799
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8a 0c 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 c7 0a 00 00 8b 5b 78 31 ff 45
kobject: 'loop3' (000000001e9b8ab0): fill_kobj_path: path = '/devices/virtual/block/loop3'
RSP: 0018:ffff888068c57aa0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101275e9de
RDX: 000000000000000f RSI: 0000000000000000 RDI: 0000000000000078
RBP: ffff888068c57c20 R08: 0000000000000006 R09: ffff888093af4ef0
R10: ffff888093af4600 R11: 0000000000000000 R12: 0000000000000000
kobject: 'loop1' (000000001f29c6b1): kobject_uevent_env
kobject: 'loop1' (000000001f29c6b1): fill_kobj_path: path = '/devices/virtual/block/loop1'
R13: 0000000000000003 R14: ffff888068c57bf8 R15: ffff88806013ad40
FS:  00007f5ee63e8700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop5' (00000000916c4b95): kobject_uevent_env
CR2: 00000000004efe78 CR3: 0000000090b09000 CR4: 00000000001406e0
kobject: 'loop5' (00000000916c4b95): fill_kobj_path: path = '/devices/virtual/block/loop5'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop0' (000000004e5fe11a): kobject_uevent_env
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'loop0' (000000004e5fe11a): fill_kobj_path: path = '/devices/virtual/block/loop0'