syzbot


KMSAN: uninit-value in eth_type_trans (2)

Status: upstream: reported C repro on 2020/01/22 16:47
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+0901d0cc75c3d716a3a3@syzkaller.appspotmail.com
First crash: 1903d, last: 1h08m
Discussions (21)
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[syzbot] Monthly net report (Mar 2025) 0 (1) 2025/03/08 22:17
[syzbot] Monthly net report (Feb 2025) 0 (1) 2025/02/05 12:44
[syzbot] Monthly net report (Jan 2025) 0 (1) 2025/01/06 10:01
[syzbot] Monthly net report (Dec 2024) 0 (1) 2024/12/05 09:04
[syzbot] Monthly net report (Nov 2024) 0 (1) 2024/11/04 08:49
[syzbot] Monthly net report (Oct 2024) 0 (1) 2024/10/03 09:02
[syzbot] Monthly net report (Sep 2024) 0 (1) 2024/09/02 08:21
[syzbot] Monthly net report (Aug 2024) 0 (1) 2024/08/02 07:26
[syzbot] Monthly net report (May 2024) 0 (1) 2024/05/31 06:48
[syzbot] Monthly net report (Apr 2024) 0 (1) 2024/04/30 07:11
[syzbot] Monthly net report (Mar 2024) 0 (1) 2024/03/29 18:37
[syzbot] Monthly net report (Feb 2024) 0 (1) 2024/02/27 09:32
[syzbot] Monthly net report (Jan 2024) 0 (1) 2024/01/26 21:54
[syzbot] Monthly net report (Dec 2023) 0 (1) 2023/12/27 09:18
[syzbot] Monthly net report (Nov 2023) 5 (6) 2023/11/28 15:05
[syzbot] Monthly net report (Jul 2023) 0 (1) 2023/08/01 12:53
[syzbot] Monthly net report (Jun 2023) 0 (1) 2023/06/29 12:38
[syzbot] Monthly net report (May 2023) 0 (1) 2023/05/30 10:56
[syzbot] Monthly net report (Apr 2023) 0 (1) 2023/04/27 10:45
[syzbot] Monthly net report 0 (1) 2023/03/27 11:04
KMSAN: uninit-value in eth_type_trans (2) 0 (1) 2020/01/22 16:47
Similar bugs (23)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in eth_type_trans net 2 2473d 2477d 0/28 closed as invalid on 2018/07/20 10:58
upstream KMSAN: uninit-value in native_apic_mem_write (2) kernel syz 148 766d 779d 0/28 auto-obsoleted due to no activity on 2023/05/13 00:04
upstream KMSAN: uninit-value in erspan_build_header net 40 807d 897d 0/28 auto-obsoleted due to no activity on 2023/05/10 10:26
upstream KMSAN: uninit-value in bpf_prog_run_generic_xdp net C 1384 1d16h 860d 0/28 upstream: reported C repro on 2022/11/18 11:39
upstream KMSAN: uninit-value in ip_tunnel_xmit (3) net C 1516 903d 1590d 0/28 closed as invalid on 2022/10/12 18:48
upstream KMSAN: kernel-infoleak in _copy_to_iter (7) net C 138977 762d 1114d 22/28 fixed on 2023/02/24 13:50
upstream KMSAN: uninit-value in IP6_ECN_decapsulate net C 981 464d 2380d 25/28 fixed on 2023/12/21 03:45
upstream KMSAN: uninit-value in br_dev_xmit bridge C 537 802d 1858d 0/28 auto-obsoleted due to no activity on 2023/05/15 13:28
upstream KMSAN: uninit-value in batadv_get_vid batman C 1947 754d 1858d 0/28 auto-obsoleted due to no activity on 2023/07/23 05:56
upstream KMSAN: uninit-value in skb_release_data (3) net C 10 981d 1660d 0/28 auto-obsoleted due to no activity on 2022/11/17 07:20
upstream KMSAN: uninit-value in hsr_register_frame_in net C 197 615d 2236d 0/28 auto-obsoleted due to no activity on 2024/02/18 18:09
upstream KMSAN: kernel-infoleak in copyout (2) net C 6723 659d 1827d 22/28 fixed on 2023/06/08 14:41
upstream KMSAN: uninit-value in ipv6_find_tlv net C 271 700d 2053d 22/28 fixed on 2023/06/08 14:41
upstream KMSAN: uninit-value in ax25cmp (2) hams C 51 918d 1179d 0/28 closed as invalid on 2022/11/18 11:50
upstream KMSAN: uninit-value in virtqueue_add (3) virt 13 875d 1167d 0/28 auto-obsoleted due to no activity on 2023/02/12 03:53
upstream KMSAN: kernel-infoleak in __skb_datagram_iter net 68 548d 653d 23/28 fixed on 2023/09/28 17:51
upstream KMSAN: uninit-value in can_send can C 630 857d 875d 22/28 fixed on 2023/02/24 13:50
upstream KMSAN: uninit-value in inet_frag_find (2) net 2 1171d 1179d 0/28 auto-closed as invalid on 2022/04/11 17:13
upstream KMSAN: kernel-infoleak in _copy_to_iter (6) net C 748 1115d 1204d 20/28 fixed on 2022/03/08 16:11
upstream KMSAN: uninit-value in hsr_fill_frame_info (2) net C 65 614d 897d 0/28 auto-obsoleted due to no activity on 2023/10/30 13:38
upstream KMSAN: uninit-value in nf_nat_setup_info (2) netfilter C 764 1095d 1175d 0/28 auto-obsoleted due to no activity on 2022/09/28 07:28
upstream KMSAN: kernel-infoleak in move_addr_to_user (6) tipc C 4 1155d 1193d 20/28 fixed on 2022/03/08 16:11
upstream KMSAN: uninit-value in sctp_inq_pop (2) sctp C 3827 13h03m 1174d 0/28 upstream: reported C repro on 2022/01/08 08:00
Last patch testing requests (12)
Created Duration User Patch Repo Result
2024/07/04 01:53 22m retest repro upstream error
2024/07/04 01:53 22m retest repro upstream error
2024/07/03 14:40 22m retest repro upstream error
2024/07/03 14:40 23m retest repro upstream error
2024/07/03 14:40 23m retest repro upstream error
2024/07/03 14:40 22m retest repro upstream error
2024/07/03 14:40 22m retest repro upstream error
2024/06/30 14:34 4h28m retest repro upstream error
2024/06/30 14:34 22m retest repro upstream error
2024/06/30 14:34 22m retest repro upstream error
2021/06/14 08:55 23m mail@anirudhrb.com https://github.com/google/kmsan.git master OK
2021/06/13 18:44 22m mail@anirudhrb.com patch https://github.com/google/kmsan.git master OK

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in eth_type_trans+0x632/0x990 net/ethernet/eth.c:176
 eth_type_trans+0x632/0x990 net/ethernet/eth.c:176
 __dev_forward_skb2+0x3cc/0x900 net/core/dev.c:2190
 dev_forward_skb_nomtu+0x3c/0xe0 net/core/dev.c:2229
 __bpf_rx_skb net/core/filter.c:2104 [inline]
 __bpf_redirect_common net/core/filter.c:2179 [inline]
 __bpf_redirect+0x13a6/0x1690 net/core/filter.c:2186
 ____bpf_clone_redirect net/core/filter.c:2460 [inline]
 bpf_clone_redirect+0x37e/0x500 net/core/filter.c:2430
 ___bpf_prog_run+0x13fe/0xe0f0 kernel/bpf/core.c:2015
 __bpf_prog_run512+0xc5/0xf0 kernel/bpf/core.c:2258
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 bpf_test_run+0x546/0xd20 net/bpf/test_run.c:434
 bpf_prog_test_run_skb+0x18c4/0x2570 net/bpf/test_run.c:1095
 bpf_prog_test_run+0x5e5/0xa30 kernel/bpf/syscall.c:4402
 __sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5808
 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5895 [inline]
 __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5895
 x64_sys_call+0x329c/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4125 [inline]
 slab_alloc_node mm/slub.c:4168 [inline]
 kmem_cache_alloc_node_noprof+0x907/0xe00 mm/slub.c:4220
 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587
 pskb_expand_head+0x226/0x1a60 net/core/skbuff.c:2275
 skb_ensure_writable+0x496/0x520 net/core/skbuff.c:6214
 __bpf_try_make_writable net/core/filter.c:1665 [inline]
 bpf_try_make_writable net/core/filter.c:1671 [inline]
 bpf_try_make_head_writable net/core/filter.c:1679 [inline]
 ____bpf_clone_redirect net/core/filter.c:2454 [inline]
 bpf_clone_redirect+0x1c5/0x500 net/core/filter.c:2430
 ___bpf_prog_run+0x13fe/0xe0f0 kernel/bpf/core.c:2015
 __bpf_prog_run512+0xc5/0xf0 kernel/bpf/core.c:2258
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 bpf_test_run+0x546/0xd20 net/bpf/test_run.c:434
 bpf_prog_test_run_skb+0x18c4/0x2570 net/bpf/test_run.c:1095
 bpf_prog_test_run+0x5e5/0xa30 kernel/bpf/syscall.c:4402
 __sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5808
 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5895 [inline]
 __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5895
 x64_sys_call+0x329c/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 5810 Comm: syz-executor378 Not tainted 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================

Crashes (6841):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/27 12:23 upstream d6ef8b40d075 d3ccff63 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2024/06/06 13:22 upstream 614da38e2f7a 121701b6 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2020/08/18 09:02 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/18 07:54 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/18 05:56 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/16 09:18 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/16 08:26 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/16 05:50 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/16 04:31 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/16 03:27 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/16 02:24 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/15 23:14 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz C ci-upstream-kmsan-gce-386
2020/05/08 10:31 https://github.com/google/kmsan.git master 21c44613a2fe 6c70a1c2 .config console log report syz C ci-upstream-kmsan-gce-386
2023/11/17 21:49 upstream 6bc40e44f1dd cb976f63 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in eth_type_trans
2023/04/29 05:11 https://github.com/google/kmsan.git master 81af97bdef5e 62df2017 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in eth_type_trans
2020/01/18 14:49 https://github.com/google/kmsan.git master 686a4f77cb0c 3de7aabb .config console log report syz C ci-upstream-kmsan-gce
2023/08/07 17:02 upstream 52a93d39b17d 0ef3dfda .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in eth_type_trans
2025/03/28 05:26 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/27 10:25 upstream 1e1ba8d23dae 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/26 08:54 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/25 14:14 upstream 327ecdbc0fda 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/25 13:07 upstream 327ecdbc0fda 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/25 11:56 upstream 327ecdbc0fda 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/23 18:40 upstream 586de92313fc 4e8d3850 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/23 12:10 upstream 586de92313fc 4e8d3850 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/22 12:32 upstream 88d324e69ea9 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/21 15:49 upstream b3ee1e460951 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/21 07:47 upstream 5fc319360819 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/21 05:47 upstream 5fc319360819 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/21 03:18 upstream 5fc319360819 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/19 07:01 upstream 81e4f8d68c66 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/18 17:02 upstream 76b6905c11fd 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/18 08:14 upstream fc444ada1310 ce3352cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/18 01:40 upstream 4701f33a1070 ce3352cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/15 20:58 upstream 3571e8b091f4 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/15 07:32 upstream a29967be967e e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/14 04:32 upstream 4003c9e78778 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/14 03:29 upstream 4003c9e78778 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/13 00:29 upstream 0fed89a961ea 1a5d9317 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/12 09:12 upstream 0fed89a961ea ee70e6db .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/12 00:54 upstream 0b46b049d6ec f2eee6b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/12 00:54 upstream 0b46b049d6ec f2eee6b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/10 11:21 upstream 80e54e84911a 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/10 08:02 upstream 80e54e84911a 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2025/03/09 05:05 upstream b7c90e3e717a 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in eth_type_trans
2023/12/19 00:05 upstream 2cf4f94d8e86 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in eth_type_trans
2025/03/27 13:45 upstream 1e1ba8d23dae 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/26 14:33 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/25 16:16 upstream 327ecdbc0fda 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/23 16:01 upstream 586de92313fc 4e8d3850 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/23 15:05 upstream 586de92313fc 4e8d3850 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/22 16:40 upstream 88d324e69ea9 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/19 17:27 upstream 81e4f8d68c66 8d0a2921 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/18 22:21 upstream 76b6905c11fd 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/18 20:05 upstream 76b6905c11fd 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/16 00:37 upstream 3571e8b091f4 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/15 10:27 upstream a29967be967e e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/15 01:20 upstream 695caca9345a e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/14 07:43 upstream 4003c9e78778 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/12 12:29 upstream 0fed89a961ea ee70e6db .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2025/03/09 08:09 upstream b7c90e3e717a 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in eth_type_trans
2023/12/18 21:38 upstream ceb6a6f023fd 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in eth_type_trans
2020/01/10 21:11 https://github.com/google/kmsan.git master 178db004661b 4de4e9f0 .config console log report ci-upstream-kmsan-gce
2021/01/16 21:49 https://github.com/google/kmsan.git master 73d62e81b476 65a7a854 .config console log report info ci-upstream-kmsan-gce-386
* Struck through repros no longer work on HEAD.