panic: wait failed: the process NUM:LINE exited: 1f (err <nil>) (4)

panic: wait failed: the process NUM:LINE exited: 1f (err <nil>) (4)

Status: fixed on 2020/02/27 08:57
Reported-by: syzbot+17e6a91da5c54479ab5a@syzkaller.appspotmail.com
Fix commit: 17c18241cdeb platform/syscall: use syscall + int3 to execute a system call in a stub process
First crash: 1798d, last: 1797d

▶ ▼ Similar bugs (2)

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
gvisor	panic: wait failed: the process NUM:LINE exited: 1f (err <nil>) (3)				1	1805d	1805d	26/26	closed as dup on 2019/12/19 22:54
gvisor	panic: wait failed: the process NUM:LINE exited: 1f (err <nil>)				1	1895d	1895d	0/26	closed as invalid on 2019/09/19 17:18

Sample crash report:

panic: wait failed: the process 56678:2099 exited: 1f (err <nil>)
Registers:
	R15	 = 000000000000a8a2
	R14	 = 000000c000112f00
	R13	 = 0000000001ac33a0
	R12	 = 000000c0002c1cf0
	Rbp	 = 000000c0002c1e90
	Rbx	 = 0000000000000001
	R11	 = 0000000000000206
	R10	 = 0000000000000011
	R9	 = 0000000011915000
	R8	 = 000000000000000b
	Rax	 = 0000000000000009
	Rcx	 = 00007fffffff0053
	Rdx	 = 0000000000000001
	Rsi	 = 0000000000200000
	Rdi	 = 0000000000730000
	Orig_rax = 000000000000003e
	Rip	 = 00007fffffff0051
	Cs	 = 0000000000000033
	Eflags	 = 0000000000000206
	Rsp	 = 000000c0002c1cf0
	Ss	 = 000000000000002b
	Fs_base	 = 0000000002812880
	Gs_base	 = 0000000000000000
	Ds	 = 0000000000000000
	Es	 = 0000000000000000
	Fs	 = 0000000000000000
	Gs	 = 0000000000000000
stubStart	 = 00007fffffff0000

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2019/12/26 13:07	https://gvisor.googlesource.com/gvisor master	e013c48c78c9	8b967267	.config	console log	report					ci-gvisor-ptrace-direct-overlay-host-race
2019/12/25 11:30	https://gvisor.googlesource.com/gvisor master	e013c48c78c9	8b967267	.config	console log	report					ci-gvisor-main

* ~~Struck through~~ repros no longer work on HEAD.