syzbot


KMSAN: uninit-value in sctp_inq_pop (2)

Status: upstream: reported C repro on 2022/01/08 08:00
Labels: sctp (incorrect?)
Reported-by: syzbot+70a42f45e76bede082be@syzkaller.appspotmail.com
First crash: 557d, last: 11h19m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] KMSAN: uninit-value in sctp_inq_pop (2) 0 (1) 2022/01/08 08:00
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in sctp_inq_pop 3 702d 742d 0/24 auto-closed as invalid on 2021/10/24 08:36
upstream KMSAN: kernel-infoleak in copyout (2) net C 6703 17h43m 1159d 23/24 upstream: reported C repro on 2020/03/26 17:19
upstream KMSAN: uninit-value in nf_nat_setup_info (2) C 764 427d 507d 0/24 auto-obsoleted due to no activity on 2022/09/28 07:28
upstream KMSAN: uninit-value in eth_type_trans (2) net C 3665 15h16m 1223d 0/24 upstream: reported C repro on 2020/01/22 16:47
upstream KMSAN: kernel-infoleak in move_addr_to_user (6) tipc C 4 487d 525d 22/24 fixed on 2022/03/08 16:11
Last patch testing requests (2)
Created Duration User Patch Repo Result
2022/05/11 02:41 20m k.kahurani@gmail.com patch https://github.com/google/kmsan.git master OK
2022/05/08 15:20 12m (78) k.kahurani@gmail.com patch https://github.com/google/kmsan.git master report log

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in sctp_inq_pop+0x159f/0x1910 net/sctp/inqueue.c:205
 sctp_inq_pop+0x159f/0x1910 net/sctp/inqueue.c:205
 sctp_assoc_bh_rcv+0x1a3/0xc40 net/sctp/associola.c:999
 sctp_inq_push+0x238/0x2b0 net/sctp/inqueue.c:80
 sctp_backlog_rcv+0x3f1/0xe40 net/sctp/input.c:346
 sk_backlog_rcv include/net/sock.h:1047 [inline]
 __release_sock+0x1ff/0x560 net/core/sock.c:2849
 release_sock+0x67/0x1d0 net/core/sock.c:3404
 sctp_wait_for_connect+0x4a0/0x860 net/sctp/socket.c:9314
 sctp_sendmsg_to_asoc+0x179c/0x19e0 net/sctp/socket.c:1881
 sctp_sendmsg+0x3836/0x4ce0 net/sctp/socket.c:2027
 inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x7ea/0xa60 net/socket.c:2119
 __do_sys_sendto net/socket.c:2131 [inline]
 __se_sys_sendto net/socket.c:2127 [inline]
 __x64_sys_sendto+0x121/0x1c0 net/socket.c:2127
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at:
 sctp_inq_pop+0x1522/0x1910 net/sctp/inqueue.c:201
 sctp_assoc_bh_rcv+0x1a3/0xc40 net/sctp/associola.c:999
 sctp_inq_push+0x238/0x2b0 net/sctp/inqueue.c:80
 sctp_backlog_rcv+0x3f1/0xe40 net/sctp/input.c:346
 sk_backlog_rcv include/net/sock.h:1047 [inline]
 __release_sock+0x1ff/0x560 net/core/sock.c:2849
 release_sock+0x67/0x1d0 net/core/sock.c:3404
 sctp_wait_for_connect+0x4a0/0x860 net/sctp/socket.c:9314
 sctp_sendmsg_to_asoc+0x179c/0x19e0 net/sctp/socket.c:1881
 sctp_sendmsg+0x3836/0x4ce0 net/sctp/socket.c:2027
 inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x7ea/0xa60 net/socket.c:2119
 __do_sys_sendto net/socket.c:2131 [inline]
 __se_sys_sendto net/socket.c:2127 [inline]
 __x64_sys_sendto+0x121/0x1c0 net/socket.c:2127
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:755 [inline]
 slab_alloc_node mm/slub.c:3258 [inline]
 __kmalloc_node_track_caller+0x86c/0x1230 mm/slub.c:4994
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0x34a/0xd70 net/core/skbuff.c:426
 alloc_skb include/linux/skbuff.h:1426 [inline]
 sctp_packet_pack net/sctp/output.c:472 [inline]
 sctp_packet_transmit+0x16e4/0x4080 net/sctp/output.c:621
 sctp_outq_flush_transports net/sctp/outqueue.c:1170 [inline]
 sctp_outq_flush+0x19a1/0x6090 net/sctp/outqueue.c:1218
 sctp_outq_uncork+0x96/0xb0 net/sctp/outqueue.c:761
 sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
 sctp_do_sm+0x9503/0x9b90 net/sctp/sm_sideeffect.c:1170
 sctp_assoc_bh_rcv+0x8f8/0xc40 net/sctp/associola.c:1053
 sctp_inq_push+0x238/0x2b0 net/sctp/inqueue.c:80
 sctp_backlog_rcv+0x3f1/0xe40 net/sctp/input.c:346
 sk_backlog_rcv include/net/sock.h:1047 [inline]
 __release_sock+0x1ff/0x560 net/core/sock.c:2849
 release_sock+0x67/0x1d0 net/core/sock.c:3404
 sctp_wait_for_connect+0x4a0/0x860 net/sctp/socket.c:9314
 sctp_sendmsg_to_asoc+0x179c/0x19e0 net/sctp/socket.c:1881
 sctp_sendmsg+0x3836/0x4ce0 net/sctp/socket.c:2027
 inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x7ea/0xa60 net/socket.c:2119
 __do_sys_sendto net/socket.c:2131 [inline]
 __se_sys_sendto net/socket.c:2127 [inline]
 __x64_sys_sendto+0x121/0x1c0 net/socket.c:2127
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

CPU: 0 PID: 3488 Comm: syz-executor140 Not tainted 5.19.0-syzkaller-32655-g1b070a5d1a2c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
=====================================================

Crashes (1406):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2022/08/22 05:50 https://github.com/google/kmsan.git master 1b070a5d1a2c 26a13b38 .config strace log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2022/05/13 22:16 https://github.com/google/kmsan.git master d6e2c8c7eb40 107f6434 .config strace log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2022/01/04 02:03 https://github.com/google/kmsan.git master 81c325bbf94e 4a3f34f2 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/29 20:35 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/29 19:25 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/29 02:55 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/29 01:04 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/28 21:47 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/28 18:29 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/28 15:25 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/28 09:47 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/28 05:51 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/28 03:00 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/27 02:20 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/26 16:38 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/25 07:35 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/25 06:25 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/24 21:38 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/24 14:40 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/24 11:39 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/24 03:25 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/23 15:58 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/23 14:52 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/23 13:18 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/22 23:51 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/22 12:32 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/22 09:35 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/22 05:35 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/22 01:41 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/21 23:46 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/21 04:42 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/20 23:30 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/20 16:41 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/20 14:16 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/20 10:52 https://github.com/google/kmsan.git master dad188c049f8 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/19 18:50 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/19 17:38 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/19 15:39 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/19 01:19 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/18 19:40 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/18 10:37 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/16 12:48 https://github.com/google/kmsan.git master dad188c049f8 11c89444 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/15 22:46 https://github.com/google/kmsan.git master dad188c049f8 71b00cfb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/15 07:38 https://github.com/google/kmsan.git master 46e8b6e7cfeb 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce KMSAN: uninit-value in sctp_inq_pop
2023/05/26 17:43 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in sctp_inq_pop
2023/05/22 12:35 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in sctp_inq_pop
2023/05/20 00:32 https://github.com/google/kmsan.git master dad188c049f8 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in sctp_inq_pop
2023/05/18 06:00 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in sctp_inq_pop
2023/05/18 04:31 https://github.com/google/kmsan.git master dad188c049f8 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in sctp_inq_pop
2023/05/17 13:22 https://github.com/google/kmsan.git master dad188c049f8 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in sctp_inq_pop
2021/11/19 07:31 https://github.com/google/kmsan.git master 412af9cd936d 31a30fc0 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in sctp_inq_pop
* Struck through repros no longer work on HEAD.