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panic: runtime error: floating point error (2)

Status: upstream: reported syz repro on 2023/07/25 08:02
Reported-by: syzbot+a76d93c00034a9fd23f5@syzkaller.appspotmail.com
First crash: 711d, last: 3d04h
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] panic: runtime error: floating point error (2) 0 (1) 2023/07/25 08:02
▶ ▼ Similar bugs (10)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 panic: runtime error: floating point error syz 6 42d 887d 0/2 upstream: reported syz repro on 2023/01/26 18:24
android-5-10 panic: runtime error: floating point error 1 1043d 1043d 0/2 auto-obsoleted due to no activity on 2022/11/21 00:58
android-5-15 panic: runtime error: floating point error (2) origin:upstream syz 2 28d 173d 0/2 premoderation: reported syz repro on 2025/01/09 05:12
linux-5.15 panic: runtime error: floating point error origin:lts-only syz inconclusive 2 10d 141d 0/3 upstream: reported syz repro on 2025/02/10 09:25
android-5-15 panic: runtime error: floating point error 3 896d 943d 0/2 auto-obsoleted due to no activity on 2023/04/24 18:55
android-5-10 panic: runtime error: floating point error (2) syz error error 11 14d 896d 0/2 premoderation: reported syz repro on 2023/01/17 08:13
linux-6.1 panic: runtime error: floating point error origin:upstream syz 1 17d 17d 0/3 upstream: reported syz repro on 2025/06/14 16:04
android-6-1 panic: runtime error: floating point error (2) origin:lts missing-backport syz error 11 11d 551d 0/2 premoderation: reported syz repro on 2023/12/27 20:43
android-6-1 panic: runtime error: floating point error 1 682d 682d 0/2 auto-obsoleted due to no activity on 2023/11/17 15:39
upstream panic: runtime error: floating point error kernel 2 870d 1148d 22/29 fixed on 2023/02/24 13:50
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/05/21 18:49 13m retest repro upstream log
2025/05/21 18:19 33m retest repro bpf-next report log
2025/05/21 18:29 14m retest repro upstream report log
2025/05/12 23:28 23m retest repro upstream report log
2025/05/12 23:28 25m retest repro bpf-next log
2025/04/11 14:33 20m retest repro bpf-next report log
2025/04/11 14:33 19m retest repro bpf-next log
2025/04/11 14:33 21m retest repro bpf log
2025/04/11 14:33 22m retest repro bpf report log
2025/04/11 14:33 23m retest repro bpf-next log
▶ ▼ Fix bisection attempts (5)
Created Duration User Patch Repo Result
2025/02/26 14:53 2h46m bisect fix bpf-next OK (0) job log log
2024/09/15 20:41 2h02m bisect fix net-next OK (0) job log log
2024/08/10 00:40 1h37m bisect fix bpf-next OK (0) job log log
2023/12/09 09:14 2h31m bisect fix upstream OK (0) job log log
2023/11/04 22:09 2h33m bisect fix upstream OK (0) job log log

Sample crash report:
panic: runtime error: floating point error
[signal SIGFPE: floating-point exception code=0x80 addr=0x0 pc=0xf11fe6]

goroutine 14 [running]:
encoding/binary.AppendUvarint(...)
	/syzkaller/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.7.linux-amd64/src/encoding/binary/varint.go:46
encoding/binary.AppendVarint(...)
	/syzkaller/gopath/pkg/mod/golang.org/toolchain@v0.0.1-go1.23.7.linux-amd64/src/encoding/binary/varint.go:96
github.com/google/syzkaller/prog.(*execContext).write(...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:254
github.com/google/syzkaller/prog.(*Prog).SerializeForExec(0xc001ef5100)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:75 +0x146
github.com/google/syzkaller/pkg/rpcserver.(*Runner).sendRequest(0xc0024809c0, 0xc008818840)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/runner.go:297 +0x22e
github.com/google/syzkaller/pkg/rpcserver.(*Runner).ConnectionLoop(0xc0024809c0)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/runner.go:182 +0x545
github.com/google/syzkaller/pkg/rpcserver.(*server).connectionLoop(0xc001812360, {0x21f4660?, 0xc001265b30?}, 0xc0024809c0)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/rpcserver.go:437 +0x196
github.com/google/syzkaller/pkg/rpcserver.(*server).handleRunnerConn(0xc001812360, {0x21f4660, 0xc001265b30}, 0xc0024809c0, 0xc001265b80)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/rpcserver.go:360 +0x56a
github.com/google/syzkaller/pkg/rpcserver.(*server).handleConn(0xc001812360, {0x21f4660, 0xc001265b30}, 0xc001265b80)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/rpcserver.go:322 +0x2ab
github.com/google/syzkaller/pkg/rpcserver.(*server).Serve.func1.1({0x21f4660?, 0xc001265b30?}, 0x10?)
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpcserver/rpcserver.go:242 +0x31
github.com/google/syzkaller/pkg/flatrpc.(*Serv).Serve.func2()
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/flatrpc/conn.go:78 +0x198
golang.org/x/sync/errgroup.(*Group).Go.func1()
	/syzkaller/gopath/pkg/mod/golang.org/x/sync@v0.13.0/errgroup/errgroup.go:79 +0x50
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 9
	/syzkaller/gopath/pkg/mod/golang.org/x/sync@v0.13.0/errgroup/errgroup.go:76 +0x96

Crashes (24):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/28 14:04 upstream 35e261cd95dd fc9d8ee5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root panic: runtime error: floating point error
2025/06/24 05:02 upstream 78f4e737a53e 1a7fb460 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root panic: runtime error: floating point error
2025/04/28 17:33 upstream b4432656b36e c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root panic: runtime error: floating point error
2024/12/09 14:24 upstream fac04efc5c79 9ac0fdc6 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream panic: runtime error: floating point error
2024/11/26 14:22 upstream 7eef7e306d3c e9a9a9f2 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream panic: runtime error: floating point error
2025/06/03 02:24 bpf 5b3beac3c379 b396b4bf .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce panic: runtime error: floating point error
2025/01/13 00:02 bpf ccb98ccef0e5 6dbc6a9b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce panic: runtime error: floating point error
2024/08/16 04:04 bpf 9d5906799f7d e4bacdaf .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce panic: runtime error: floating point error
2024/03/28 16:19 net f99c5f563c17 120789fd .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce panic: runtime error: floating point error
2024/03/17 20:07 net ea80e3ed09ab d615901c .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce panic: runtime error: floating point error
2025/06/13 12:51 bpf-next fa6932577c07 98683f8f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce panic: runtime error: floating point error
2024/12/13 20:15 bpf-next 5506b7d7bbdb 7cbfbb3a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce panic: runtime error: floating point error
2024/10/20 15:36 bpf-next 8ca77b8f6223 cd6fc0a3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce panic: runtime error: floating point error
2024/03/31 10:22 bpf-next 14bb1e8c8d4a 6baf5069 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce panic: runtime error: floating point error
2024/03/17 18:02 bpf-next 4c8644f86c85 d615901c .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce panic: runtime error: floating point error
2024/03/16 10:17 bpf-next 4c8644f86c85 d615901c .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce panic: runtime error: floating point error
2023/09/26 01:00 upstream 6465e260f487 0b6a67ac .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root panic: runtime error: floating point error
2023/09/14 00:36 upstream 3669558bdf35 0b6a67ac .config strace log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root panic: runtime error: floating point error
2023/07/21 07:54 upstream 46670259519f 28847498 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root panic: runtime error: floating point error
2024/03/01 02:35 upstream 805d849d7c3c 352ab904 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root panic: runtime error: floating point error
2024/05/04 23:22 net-next 173e7622ccb3 610f2a54 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce panic: runtime error: floating point error
2024/02/18 10:34 net-next a6e0cb150c51 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce panic: runtime error: floating point error
2023/12/28 01:34 net-next 3fb65f6bc7dc fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce panic: runtime error: floating point error
2023/11/09 09:07 net-next ff269e2cd5ad 4862372a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce panic: runtime error: floating point error
* Struck through repros no longer work on HEAD.