SYZFAIL: handshake read failed

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Apr 30, 2026, 10:15:29 PMApr 30
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Hello,

syzbot found the following issue on:

HEAD commit: 2117c4c4e299 disable GuC submission for Raptor Lake-S
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1307cece580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=350a5ea5c51098902cea

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/36f53b96ed56/disk-2117c4c4.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/d613383e5a0e/bsd-2117c4c4.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bda92f3568bc/kernel-2117c4c4.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+350a5e...@syzkaller.appspotmail.com

SYZFAIL: handshake read failed
read=18446744073709551615 (errno 4: Interrupted system call)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: tun_id out of range
tun_id=8 (errno 1: Operation not permitted)
SYZFAIL: repeatedly failed to execute the program
proc=8 req=189 state=1 status=67 (errno 4: Interrupted system call)
uvn_flush: obj=0xfffffd806e8b1be8, offset=0x3ff000. error during pageout.
uvn_flush: WARNING: changes to page may be lost!

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

login: trace
Password:
Login incorrect
login: show proc
Password:
Login incorrect
login: show all locks
Password:
Login incorrect
login:


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