general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 15093 Comm: syz-executor0 Not tainted 5.0.0-rc3+ #39 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 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: 'loop1' (0000000070596295): kobject_uevent_env RSP: 0018:ffff88804bf57aa0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11010365d56 RDX: 000000000000000f RSI: 0000000000000000 RDI: 0000000000000078 RBP: ffff88804bf57c20 R08: 0000000000000006 R09: ffff888081b2eab0 R10: ffff888081b2e1c0 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88804bf57bf8 R15: ffff8880a5ff4180 FS: 00007f6663507700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1705c29848 CR3: 00000000994b9000 CR4: 00000000001406e0 kobject: 'loop1' (0000000070596295): fill_kobj_path: path = '/devices/virtual/block/loop1' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'loop2' (00000000be3ec862): kobject_uevent_env smc_splice_read+0x26c/0x390 net/smc/af_smc.c:1855 sock_splice_read+0xc6/0x140 net/socket.c:858 kobject: 'loop2' (00000000be3ec862): fill_kobj_path: path = '/devices/virtual/block/loop2' 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: 0033:0x458099 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:00007f6663506c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000458099 kobject: 'loop5' (000000009e87ae0c): kobject_uevent_env RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 000000000073bf00 R08: 0000000800010012 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f66635076d4 R13: 00000000004c6d9a R14: 00000000004db710 R15: 00000000ffffffff Modules linked in: kobject: 'loop5' (000000009e87ae0c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000000d278b58): kobject_uevent_env kobject: 'loop4' (000000000d278b58): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000001ff04db): kobject_uevent_env ---[ end trace 46e9833a24fdd99b ]--- kobject: 'loop3' (0000000001ff04db): fill_kobj_path: path = '/devices/virtual/block/loop3' RIP: 0010:tcp_splice_read+0x1eb/0xf20 net/ipv4/tcp.c:799 kobject: 'loop1' (0000000070596295): 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: 'loop1' (0000000070596295): fill_kobj_path: path = '/devices/virtual/block/loop1' RSP: 0018:ffff88804bf57aa0 EFLAGS: 00010206 kobject: 'loop2' (00000000be3ec862): kobject_uevent_env RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11010365d56 kobject: 'loop2' (00000000be3ec862): fill_kobj_path: path = '/devices/virtual/block/loop2' RDX: 000000000000000f RSI: 0000000000000000 RDI: 0000000000000078 kobject: 'loop4' (000000000d278b58): kobject_uevent_env RBP: ffff88804bf57c20 R08: 0000000000000006 R09: ffff888081b2eab0 kobject: 'loop4' (000000000d278b58): fill_kobj_path: path = '/devices/virtual/block/loop4' R10: ffff888081b2e1c0 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88804bf57bf8 R15: ffff8880a5ff4180 FS: 00007f6663507700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000822760 CR3: 00000000994b9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400