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KMSAN: uninit-value in __kmalloc_node

Status: closed as invalid on 2018/09/27 12:03
Subsystems: netfilter
[Documentation on labels]
First crash: 2203d, last: 2036d
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in __kmalloc_node (2) fs 1 1929d 1928d 0/26 auto-closed as invalid on 2019/07/10 07:06

Sample crash report:
RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000003
RBP: 00007ffde5aee620 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020052000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000
==================================================================
BUG: KMSAN: uninit-value in slab_alloc_node mm/slub.c:2722 [inline]
BUG: KMSAN: uninit-value in __kmalloc_node+0x801/0x1190 mm/slub.c:3832
CPU: 1 PID: 4510 Comm: syzkaller711812 Not tainted 4.16.0+ #86
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683
 slab_alloc_node mm/slub.c:2722 [inline]
 __kmalloc_node+0x801/0x1190 mm/slub.c:3832
 kmalloc_node include/linux/slab.h:554 [inline]
 kzalloc_node include/linux/slab.h:712 [inline]
 __get_vm_area_node+0x28e/0x810 mm/vmalloc.c:1402
 __vmalloc_node_range+0x2ad/0x1140 mm/vmalloc.c:1754
 __vmalloc_node mm/vmalloc.c:1804 [inline]
 __vmalloc_node_flags mm/vmalloc.c:1818 [inline]
 vzalloc+0xb2/0xc0 mm/vmalloc.c:1857
 alloc_counters+0x99/0x920 net/ipv6/netfilter/ip6_tables.c:830
 copy_entries_to_user net/ipv4/netfilter/arp_tables.c:686 [inline]
 get_entries net/ipv4/netfilter/arp_tables.c:871 [inline]
 do_arpt_get_ctl+0x7da/0xe60 net/ipv4/netfilter/arp_tables.c:1489
 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
 nf_getsockopt+0x47b/0x4e0 net/netfilter/nf_sockopt.c:122
 ip_getsockopt+0x284/0x3c0 net/ipv4/ip_sockglue.c:1572
 tcp_getsockopt+0x1c1/0x1f0 net/ipv4/tcp.c:3359
 sock_common_getsockopt+0x13a/0x170 net/core/sock.c:2934
 SYSC_getsockopt+0x49b/0x570 net/socket.c:1880
 SyS_getsockopt+0x76/0xa0 net/socket.c:1862
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x4440da
RSP: 002b:00007ffde5aedeb8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004440da
RDX: 0000000000000061 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffde5aedfc0 R08: 00007ffde5aedecc R09: 000000000122a880
R10: 00007ffde5aedfc0 R11: 0000000000000212 R12: 000000000000b0e1
R13: 00000000006ce448 R14: 0000000000000000 R15: 0000000000000000

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
 kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
 __kmalloc+0x23c/0x350 mm/slub.c:3791
 kmalloc include/linux/slab.h:517 [inline]
 sock_alloc_inode+0xb9/0x2b0 net/socket.c:247
 alloc_inode fs/inode.c:209 [inline]
 new_inode_pseudo+0x8a/0x430 fs/inode.c:890
 sock_alloc net/socket.c:565 [inline]
 __sock_create+0x392/0xf60 net/socket.c:1249
 sock_create net/socket.c:1325 [inline]
 SYSC_socket+0x16e/0x620 net/socket.c:1355
 SyS_socket+0x53/0x80 net/socket.c:1335
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
==================================================================

Crashes (171):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/04/23 02:36 https://github.com/google/kmsan.git master d2d741e5d189 d23fcf6c .config console log report syz C ci-upstream-kmsan-gce
2018/09/25 19:50 https://github.com/google/kmsan.git master eb2e67596de2 b7e11289 .config console log report ci-upstream-kmsan-gce
2018/09/14 10:44 https://github.com/google/kmsan.git master 5815ca49bf07 a343a400 .config console log report ci-upstream-kmsan-gce
2018/09/01 13:00 https://github.com/google/kmsan.git master 28f0ca98eadf a4718693 .config console log report ci-upstream-kmsan-gce
2018/09/01 01:07 https://github.com/google/kmsan.git master 28f0ca98eadf a4718693 .config console log report ci-upstream-kmsan-gce
2018/08/30 21:41 https://github.com/google/kmsan.git master 25114c64b719 938220fd .config console log report ci-upstream-kmsan-gce
2018/08/29 06:08 https://github.com/google/kmsan.git master 2dca2cbde67a 53ff8784 .config console log report ci-upstream-kmsan-gce
2018/08/28 13:20 https://github.com/google/kmsan.git master 72cde92031e1 7ef1de9e .config console log report ci-upstream-kmsan-gce
2018/08/27 23:19 https://github.com/google/kmsan.git master 0cc51dc9a291 7ef1de9e .config console log report ci-upstream-kmsan-gce
2018/08/27 14:15 https://github.com/google/kmsan.git master 0cc51dc9a291 758cd203 .config console log report ci-upstream-kmsan-gce
2018/08/26 12:45 https://github.com/google/kmsan.git master 0cc51dc9a291 758cd203 .config console log report ci-upstream-kmsan-gce
2018/08/26 07:52 https://github.com/google/kmsan.git master 0cc51dc9a291 758cd203 .config console log report ci-upstream-kmsan-gce
2018/08/25 18:38 https://github.com/google/kmsan.git master 0cc51dc9a291 76e7c3df .config console log report ci-upstream-kmsan-gce
2018/08/25 10:43 https://github.com/google/kmsan.git master 0cc51dc9a291 9be5aa1d .config console log report ci-upstream-kmsan-gce
2018/08/25 06:22 https://github.com/google/kmsan.git master 0cc51dc9a291 9be5aa1d .config console log report ci-upstream-kmsan-gce
2018/08/24 20:35 https://github.com/google/kmsan.git master 0cc51dc9a291 9b0f5c75 .config console log report ci-upstream-kmsan-gce
2018/08/24 05:53 https://github.com/google/kmsan.git master 0cc51dc9a291 95b5c82b .config console log report ci-upstream-kmsan-gce
2018/08/24 03:45 https://github.com/google/kmsan.git master 0cc51dc9a291 95b5c82b .config console log report ci-upstream-kmsan-gce
2018/08/22 20:12 https://github.com/google/kmsan.git master 0cc51dc9a291 95b5c82b .config console log report ci-upstream-kmsan-gce
2018/08/21 12:42 https://github.com/google/kmsan.git master 0cc51dc9a291 95b5c82b .config console log report ci-upstream-kmsan-gce
2018/08/17 14:36 https://github.com/google/kmsan.git master 0cc51dc9a291 738da825 .config console log report ci-upstream-kmsan-gce
2018/08/17 09:51 https://github.com/google/kmsan.git master 0cc51dc9a291 9ccc1d45 .config console log report ci-upstream-kmsan-gce
2018/08/16 05:03 https://github.com/google/kmsan.git master 0cc51dc9a291 9ccc1d45 .config console log report ci-upstream-kmsan-gce
2018/08/15 07:42 https://github.com/google/kmsan.git master 0cc51dc9a291 0e6dcb88 .config console log report ci-upstream-kmsan-gce
2018/08/15 02:20 https://github.com/google/kmsan.git master 0cc51dc9a291 0e6dcb88 .config console log report ci-upstream-kmsan-gce
2018/08/13 14:20 https://github.com/google/kmsan.git master 0cc51dc9a291 7a88b141 .config console log report ci-upstream-kmsan-gce
2018/08/13 04:49 https://github.com/google/kmsan.git master 0cc51dc9a291 7a88b141 .config console log report ci-upstream-kmsan-gce
2018/08/12 13:07 https://github.com/google/kmsan.git master 0cc51dc9a291 7a88b141 .config console log report ci-upstream-kmsan-gce
2018/08/12 06:16 https://github.com/google/kmsan.git master 0cc51dc9a291 7a88b141 .config console log report ci-upstream-kmsan-gce
2018/08/11 13:36 https://github.com/google/kmsan.git master 0cc51dc9a291 7a88b141 .config console log report ci-upstream-kmsan-gce
2018/07/24 12:26 https://github.com/google/kmsan.git master d1c2a46a46f6 4969639c .config console log report ci-upstream-kmsan-gce
2018/07/24 08:06 https://github.com/google/kmsan.git master d1c2a46a46f6 912c93d7 .config console log report ci-upstream-kmsan-gce
2018/07/23 20:30 https://github.com/google/kmsan.git master d1c2a46a46f6 912c93d7 .config console log report ci-upstream-kmsan-gce
2018/07/23 17:43 https://github.com/google/kmsan.git master d1c2a46a46f6 f69c5fcd .config console log report ci-upstream-kmsan-gce
2018/07/23 15:38 https://github.com/google/kmsan.git master d1c2a46a46f6 f69c5fcd .config console log report ci-upstream-kmsan-gce
2018/07/23 08:10 https://github.com/google/kmsan.git master d1c2a46a46f6 f69c5fcd .config console log report ci-upstream-kmsan-gce
2018/07/22 21:15 https://github.com/google/kmsan.git master d1c2a46a46f6 8cc079c3 .config console log report ci-upstream-kmsan-gce
2018/07/21 18:14 https://github.com/google/kmsan.git master d1c2a46a46f6 8cc079c3 .config console log report ci-upstream-kmsan-gce
2018/07/21 07:18 https://github.com/google/kmsan.git master d1c2a46a46f6 8cc079c3 .config console log report ci-upstream-kmsan-gce
2018/07/20 18:15 https://github.com/google/kmsan.git master d1c2a46a46f6 49f35839 .config console log report ci-upstream-kmsan-gce
2018/07/20 16:08 https://github.com/google/kmsan.git master cf8cd3cd03e2 49f35839 .config console log report ci-upstream-kmsan-gce
2018/04/11 20:45 https://github.com/google/kmsan.git master 35ff515e4bda 9cd56d71 .config console log report ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.