Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported |
---|---|---|---|---|---|---|
KMSAN: uninit-value in dev_map_lookup_elem bpf net | C | 3 | 26d | 32d |
syzbot |
sign-in | mailing list | source | docs |
🐞 Open [993] ≡ Subsystems 🐞 Fixed [5244] 🐞 Invalid [12515] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
Title | Replies (including bot) | Last reply |
---|---|---|
[syzbot] [bpf?] KMSAN: uninit-value in bstr_printf | 1 (2) | 2024/04/09 05:33 |
Re: [syzbot] [bpf?] KMSAN: uninit-value in bpf_bprintf_prepare | 1 (1) | 2024/02/23 15:48 |
Re: [syzbot] [bpf?] KMSAN: uninit-value in bstr_printf | 1 (1) | 2024/02/23 15:44 |
===================================================== BUG: KMSAN: uninit-value in bstr_printf+0x19df/0x1b50 lib/vsprintf.c:3334 bstr_printf+0x19df/0x1b50 lib/vsprintf.c:3334 ____bpf_snprintf kernel/bpf/helpers.c:1064 [inline] bpf_snprintf+0x1c8/0x360 kernel/bpf/helpers.c:1044 ___bpf_prog_run+0x2180/0xdb80 kernel/bpf/core.c:1986 __bpf_prog_run288+0xb5/0xe0 kernel/bpf/core.c:2226 bpf_dispatcher_nop_func include/linux/bpf.h:1231 [inline] __bpf_prog_run include/linux/filter.h:651 [inline] bpf_prog_run include/linux/filter.h:658 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:675 [inline] bpf_flow_dissect+0x127/0x470 net/core/flow_dissector.c:991 bpf_prog_test_run_flow_dissector+0x6f4/0xa20 net/bpf/test_run.c:1359 bpf_prog_test_run+0x6af/0xac0 kernel/bpf/syscall.c:4107 __sys_bpf+0x649/0xd60 kernel/bpf/syscall.c:5475 __do_sys_bpf kernel/bpf/syscall.c:5561 [inline] __se_sys_bpf kernel/bpf/syscall.c:5559 [inline] __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5559 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was stored to memory at: bpf_bprintf_prepare+0x138d/0x23b0 kernel/bpf/helpers.c:1027 ____bpf_snprintf kernel/bpf/helpers.c:1060 [inline] bpf_snprintf+0x141/0x360 kernel/bpf/helpers.c:1044 ___bpf_prog_run+0x2180/0xdb80 kernel/bpf/core.c:1986 __bpf_prog_run288+0xb5/0xe0 kernel/bpf/core.c:2226 bpf_dispatcher_nop_func include/linux/bpf.h:1231 [inline] __bpf_prog_run include/linux/filter.h:651 [inline] bpf_prog_run include/linux/filter.h:658 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:675 [inline] bpf_flow_dissect+0x127/0x470 net/core/flow_dissector.c:991 bpf_prog_test_run_flow_dissector+0x6f4/0xa20 net/bpf/test_run.c:1359 bpf_prog_test_run+0x6af/0xac0 kernel/bpf/syscall.c:4107 __sys_bpf+0x649/0xd60 kernel/bpf/syscall.c:5475 __do_sys_bpf kernel/bpf/syscall.c:5561 [inline] __se_sys_bpf kernel/bpf/syscall.c:5559 [inline] __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5559 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable stack created at: __bpf_prog_run288+0x45/0xe0 kernel/bpf/core.c:2226 bpf_dispatcher_nop_func include/linux/bpf.h:1231 [inline] __bpf_prog_run include/linux/filter.h:651 [inline] bpf_prog_run include/linux/filter.h:658 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:675 [inline] bpf_flow_dissect+0x127/0x470 net/core/flow_dissector.c:991 CPU: 1 PID: 8904 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-00331-gc1ca10ceffbb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 =====================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/02/17 20:52 | upstream | c1ca10ceffbb | 578f7538 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kmsan-gce-root | KMSAN: uninit-value in bstr_printf |