syzbot


SYZFAIL: SIGILL

Status: upstream: reported syz repro on 2026/01/14 07:31
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+ad310297c550fbff9482@syzkaller.appspotmail.com
First crash: 4d23h, last: 4d23h
Bug presence (1)
Date Name Commit Repro Result
2026/01/16 upstream (ToT) 983d014aafb1 syz [report] lost connection to test machine
Similar bugs (10)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 SYZFAIL: SIGILL (3) -1 1 30d 30d 0/2 premoderation: reported on 2025/12/20 03:30
android-6-1 SYZFAIL: SIGILL (4) origin:upstream -1 syz 9 11d 57d 0/2 premoderation: reported syz repro on 2025/11/22 17:00
android-6-1 SYZFAIL: SIGILL (3) -1 4 168d 252d 0/2 auto-obsoleted due to no activity on 2025/11/01 21:09
linux-6.1 SYZFAIL: SIGILL (2) origin:upstream -1 syz 3 3d01h 42d 0/3 upstream: reported syz repro on 2025/12/08 03:30
android-5-15 SYZFAIL: SIGILL -1 1 550d 550d 0/2 auto-obsoleted due to no activity on 2024/10/15 20:58
linux-6.1 SYZFAIL: SIGILL -1 1 272d 272d 0/3 auto-obsoleted due to no activity on 2025/07/30 15:44
android-5-10 SYZFAIL: SIGILL -1 9 3d03h 339d 0/2 premoderation: reported on 2025/02/14 06:19
android-6-1 SYZFAIL: SIGILL (2) -1 1 414d 414d 0/2 auto-obsoleted due to no activity on 2025/02/28 17:25
android-5-15 SYZFAIL: SIGILL (2) -1 1 260d 260d 0/2 auto-obsoleted due to no activity on 2025/08/01 23:52
android-6-1 SYZFAIL: SIGILL -1 3 550d 550d 0/2 auto-obsoleted due to no activity on 2024/10/15 20:47

Sample crash report:
SYZFAIL: SIGILL
pc-offset:0xffffffffffebf9d4 pc:0x7f668858f50c addr:(nil) code=128 (errno 9: Bad file descriptor)
SIGILL: illegal instruction
PC=0x47fad7 m=1 sigcode=128
instruction bytes: 0x48 0x83 0xc4 0x10 0x5d 0xc3 0xcc 0xcc 0xcc 0xb8 0xba 0x0 0x0 0x0 0xf 0x5

goroutine 0 gp=0xc000002700 m=1 mp=0xc00007c008 [idle]:
runtime.usleep(0x14)
	/usr/local/go/src/runtime/sys_linux_amd64.s:135 +0x37 fp=0xc00005df38 sp=0xc00005df18 pc=0x47fad7
runtime.sysmon()
	/usr/local/go/src/runtime/proc.go:6111 +0xa5 fp=0xc00005dfa0 sp=0xc00005df38 pc=0x44fda5
runtime.mstart1()
	/usr/local/go/src/runtime/proc.go:1855 +0x93 fp=0xc00005dfc8 sp=0xc00005dfa0 pc=0x4466b3
runtime.mstart0()
	/usr/local/go/src/runtime/proc.go:1808 +0x75 fp=0xc00005dff8 sp=0xc00005dfc8 pc=0x4465f5
runtime.mstart()
	/usr/local/go/src/runtime/asm_amd64.s:395 +0x5 fp=0xc00005e000 sp=0xc00005dff8 pc=0x47c345

goroutine 1 gp=0xc000002380 m=nil [sync.WaitGroup.Wait]:
runtime.gopark(0xc000111c98?, 0x419274?, 0x60?, 0x92?, 0x7f9a2ad5fb20?)
	/usr/local/go/src/runtime/proc.go:435 +0xce fp=0xc003474c38 sp=0xc003474c18 pc=0x47666e
runtime.goparkunlock(...)
	/usr/local/go/src/runtime/proc.go:441
runtime.semacquire1(0xc001ed0190, 0x0, 0x1, 0x0, 0x18)
	/usr/local/go/src/runtime/sema.go:188 +0x21d fp=0xc003474ca0 sp=0xc003474c38 pc=0x4567fd
sync.runtime_SemacquireWaitGroup(0xc00000eac8?)
	/usr/local/go/src/runtime/sema.go:110 +0x25 fp=0xc003474cd8 sp=0xc003474ca0 pc=0x477c05
sync.(*WaitGroup).Wait(0x15a1b20?)
	/usr/local/go/src/sync/waitgroup.go:118 +0x48 fp=0xc003474d00 sp=0xc003474cd8 pc=0x489bc8
golang.org/x/sync/errgroup.(*Group).Wait(0xc001ed0180)
	/syzkaller/gopath/pkg/mod/golang.org/x/sync@v0.17.0/errgroup/errgroup.go:56 +0x1e fp=0xc003474d20 sp=0xc003474d00 pc=0xfae5de
github.com/google/syzkaller/pkg/rpcserver.RunLocal({0x235ffb0?, 0xc00261a5f0?}, 0x2330568?)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/local.go:54 +0x192 fp=0xc003474da8 sp=0xc003474d20 pc=0x12725d2
main.main()
	/syzkaller/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:187 +0x93e fp=0xc003474f50 sp=0xc003474da8 pc=0x127f3fe
runtime.main()
	/usr/local/go/src/runtime/proc.go:283 +0x28b fp=0xc003474fe0 sp=0xc003474f50 pc=0x44310b
runtime.goexit({})
	/usr/local/go/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc003474fe8 sp=0xc003474fe0 pc=0x47e281

goroutine 17 gp=0xc0000a0000 m=nil [force gc (idle)]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
Connection to 10.128.1.69 closed by remote host.

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/14 07:31 linux-6.6.y c596736dadab d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan SYZFAIL: SIGILL
* Struck through repros no longer work on HEAD.