SYZFAIL: dup2(NUM, kInPipeFd) failed (4)

Status: upstream: reported on 2026/07/07 06:04
Reported-by: syzbot+53fe12343a25d05ed61c@syzkaller.appspotmail.com
First crash: 45d, last: 45d
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd SYZFAIL: dup2(NUM, kInPipeFd) failed (3) -1 155 192d 317d 0/4 auto-obsoleted due to no activity on 2026/04/01 07:23
openbsd SYZFAIL: dup2(NUM, kInPipeFd) failed -1 syz 4 1700d 1718d 0/4 closed as invalid on 2021/12/26 09:22
openbsd SYZFAIL: dup2(NUM, kInPipeFd) failed (2) -1 2 444d 466d 0/4 auto-obsoleted due to no activity on 2025/09/01 02:07

Sample crash report:
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: dup2(0, kInPipeFd) failed
 (errno 9: Bad file descriptor)
SYZFAIL: repeatedly failed to execute the program
proc=8 req=110 state=1 status=67 (errno 4: Interrupted system call)
login: 

OpenBSD/amd64 (ci-openbsd-main-3.us-central1-b.c.syzkaller.internal) (tty00)

login: uvn_flush: obj=0xffffef006f4f9c88, offset=0x3ff000.  error during pageout.
uvn_flush: WARNING: changes to page may be lost!
set $lines = 0
Password:
Login incorrect
login: show panic
Password:
Login incorrect
login: show registers
Password:
Login incorrect
login: ps
Password:
Login incorrect
show malloc
login: Password:
Login incorrect
machine ddbcpu 0
login: Password:
Login incorrect
machine ddbcpu 1
login: Password:
Login incorrect
login:

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/07 06:03 openbsd 228829a254a6 fcece630 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main SYZFAIL: dup2(NUM, kInPipeFd) failed
* Struck through repros no longer work on HEAD.