syzbot


WARNING in kmalloc_slab (4)

Status: fixed on 2018/03/23 18:14
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+6a7e7ed886bde43469c4@syzkaller.appspotmail.com
Fix commit: d97ca5d714a5 xfrm_user: uncoditionally validate esn replay attribute struct
First crash: 2231d, last: 2231d
Discussions (1)
Title Replies (including bot) Last reply
Re: WARNING in kmalloc_slab (4) 2 (2) 2018/03/13 08:04
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in kmalloc_slab net C 22353 2369d 2442d 3/26 fixed on 2017/10/24 06:54
upstream WARNING in kmalloc_slab (3) net C 1901 2245d 2329d 4/26 fixed on 2018/02/26 20:04
upstream WARNING in kmalloc_slab (5) bfs 2 2207d 2208d 0/26 closed as invalid on 2018/04/09 12:26
upstream WARNING in kmalloc_slab (2) block trace C 2478 2352d 2369d 3/26 fixed on 2017/11/11 01:37

Sample crash report:
WARNING: CPU: 1 PID: 27333 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70 mm/slab_common.c:1012
Kernel panic - not syncing: panic_on_warn set ...

syz-executor0: vmalloc: allocation failure: 17045651456 bytes, mode:0x14080c0(GFP_KERNEL|__GFP_ZERO), nodemask=(null)
CPU: 1 PID: 27333 Comm: syz-executor2 Not tainted 4.16.0-rc4+ #260
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+0x194/0x24d lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
syz-executor0 cpuset=
 __warn+0x1dc/0x200 kernel/panic.c:547
/
 mems_allowed=0
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986
RIP: 0010:kmalloc_slab+0x5d/0x70 mm/slab_common.c:1012
RSP: 0018:ffff8801ccfc72f0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000010000018 RCX: ffffffff84ec4fc8
RDX: 0000000000000ba7 RSI: 0000000000000000 RDI: 0000000010000018
RBP: ffff8801ccfc72f0 R08: 0000000000000000 R09: 1ffff100399f8e21
R10: ffff8801ccfc7040 R11: 0000000000000001 R12: 0000000000000018
R13: ffff8801ccfc7598 R14: 00000000014080c0 R15: ffff8801aebaad80
 __do_kmalloc mm/slab.c:3700 [inline]
 __kmalloc+0x25/0x760 mm/slab.c:3714
 kmalloc include/linux/slab.h:517 [inline]
 kzalloc include/linux/slab.h:701 [inline]
 xfrm_alloc_replay_state_esn net/xfrm/xfrm_user.c:442 [inline]
 xfrm_state_construct net/xfrm/xfrm_user.c:601 [inline]
 xfrm_add_sa+0x1b15/0x3440 net/xfrm/xfrm_user.c:647
 xfrm_user_rcv_msg+0x41c/0x860 net/xfrm/xfrm_user.c:2595
 netlink_rcv_skb+0x14b/0x380 net/netlink/af_netlink.c:2444
 xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2603
 netlink_unicast_kernel net/netlink/af_netlink.c:1308 [inline]
 netlink_unicast+0x4c4/0x6b0 net/netlink/af_netlink.c:1334
 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1897
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:639
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2047
 __sys_sendmsg+0xe5/0x210 net/socket.c:2081
 SYSC_sendmsg net/socket.c:2092 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2088
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x453e69
RSP: 002b:00007f1cbcfbfc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1cbcfc06d4 RCX: 0000000000453e69
RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004c7 R14: 00000000006f7348 R15: 0000000000000000
CPU: 0 PID: 27337 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #260
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+0x194/0x24d lib/dump_stack.c:53
 warn_alloc+0x19a/0x2b0 mm/page_alloc.c:3310
 __vmalloc_node_range+0x4f0/0x650 mm/vmalloc.c:1775
 __vmalloc_node mm/vmalloc.c:1804 [inline]
 __vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1826
 kvmalloc_node+0x82/0xd0 mm/util.c:428
 kvmalloc include/linux/mm.h:541 [inline]
 kvmalloc_array include/linux/mm.h:557 [inline]
 xt_alloc_entry_offsets+0x21/0x30 net/netfilter/x_tables.c:778
 translate_table+0x235/0x1690 net/ipv6/netfilter/ip6_tables.c:703
 do_replace net/ipv6/netfilter/ip6_tables.c:1164 [inline]
 do_ip6t_set_ctl+0x370/0x5f0 net/ipv6/netfilter/ip6_tables.c:1690
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
 ipv6_setsockopt+0x10b/0x130 net/ipv6/ipv6_sockglue.c:927
 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2878
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2980
 SYSC_setsockopt net/socket.c:1850 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1829
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x453e69
RSP: 002b:00007f2fec3b0c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f2fec3b16d4 RCX: 0000000000453e69
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020001fde R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000520 R14: 00000000006f7ba0 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/03/12 01:46 net-next-old f44b1886a5f8 36d1c454 .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.