------------[ cut here ]------------ WARNING: CPU: 0 PID: 18649 at lib/iov_iter.c:1162 iov_iter_pipe+0x25b/0x2f0 lib/iov_iter.c:1162 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 18649 Comm: syz-executor.4 Not tainted 5.4.0-rc8-next-20191120-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:iov_iter_pipe+0x25b/0x2f0 lib/iov_iter.c:1162 Code: 83 c0 03 38 d0 7c 04 84 d2 75 33 44 89 63 24 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 bc 2a 2e fe 0f 0b e8 b5 2a 2e fe <0f> 0b e9 53 fe ff ff 4c 89 f7 e8 36 b2 6a fe e9 f5 fd ff ff e8 cc RSP: 0018:ffff88805601f988 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff88805601fa18 RCX: ffffc9000e7c1000 RDX: 000000000003cc51 RSI: ffffffff8345d08b RDI: 0000000000000004 RBP: ffff88805601f9c0 R08: ffff888057834080 R09: 0000000000000000 R10: fffffbfff13916b0 R11: ffffffff89c8b587 R12: ffff888092440c00 R13: 0000000000000010 R14: ffff888092440cc8 R15: ffff888092440cd0 generic_file_splice_read+0xa7/0x800 fs/splice.c:303 do_splice_to+0x127/0x180 fs/splice.c:877 splice_direct_to_actor+0x2d3/0x970 fs/splice.c:955 do_splice_direct+0x1da/0x2a0 fs/splice.c:1064 do_sendfile+0x597/0xd00 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1525 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1511 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: ad 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7ed6f91c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a639 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 000000007fffffff R11: 0000000000000246 R12: 00007f7ed6f926d4 R13: 00000000004c83bf R14: 00000000004de7f0 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..