lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:   Wed, 05 Jun 2019 21:42:05 -0700
From:   syzbot <>
Subject: memory leak in rawv6_sendmsg


syzbot found the following crash on:

HEAD commit:    c50bbf61 Merge tag 'platform-drivers-x86-v5.2-2' of git://..
git tree:       upstream
console output:
kernel config:
dashboard link:
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:
C reproducer:

IMPORTANT: if you fix the bug, please add the following tag to the commit:

ed '' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
BUG: memory leak
unreferenced object 0xffff8881099cc500 (size 224):
   comm "syz-executor618", pid 7230, jiffies 4294944637 (age 13.010s)
   hex dump (first 32 bytes):
     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
     [<00000000dc438dab>] kmemleak_alloc_recursive  
include/linux/kmemleak.h:55 [inline]
     [<00000000dc438dab>] slab_post_alloc_hook mm/slab.h:439 [inline]
     [<00000000dc438dab>] slab_alloc_node mm/slab.c:3269 [inline]
     [<00000000dc438dab>] kmem_cache_alloc_node+0x153/0x2a0 mm/slab.c:3579
     [<00000000fdd6976f>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:198
     [<000000007051ec41>] alloc_skb include/linux/skbuff.h:1058 [inline]
     [<000000007051ec41>] alloc_skb_with_frags+0x5f/0x250  
     [<00000000ff05b767>] sock_alloc_send_pskb+0x269/0x2a0  
     [<0000000007cd012b>] sock_alloc_send_skb+0x32/0x40 net/core/sock.c:2242
     [<00000000e26691f9>] rawv6_send_hdrinc net/ipv6/raw.c:644 [inline]
     [<00000000e26691f9>] rawv6_sendmsg+0x9c9/0x12f0 net/ipv6/raw.c:935
     [<000000003e27012a>] inet_sendmsg+0x64/0x120 net/ipv4/af_inet.c:802
     [<000000005750e5ca>] sock_sendmsg_nosec net/socket.c:652 [inline]
     [<000000005750e5ca>] sock_sendmsg+0x54/0x70 net/socket.c:671
     [<000000002a4faea6>] ___sys_sendmsg+0x393/0x3c0 net/socket.c:2292
     [<00000000aee219ed>] __sys_sendmsg+0x80/0xf0 net/socket.c:2330
     [<00000000d1f2b00e>] __do_sys_sendmsg net/socket.c:2339 [inline]
     [<00000000d1f2b00e>] __se_sys_sendmsg net/socket.c:2337 [inline]
     [<00000000d1f2b00e>] __x64_sys_sendmsg+0x23/0x30 net/socket.c:2337
     [<00000000388062fd>] do_syscall_64+0x76/0x1a0  
     [<000000009c436e23>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

This bug is generated by a bot. It may contain errors.
See for more information about syzbot.
syzbot engineers can be reached at

syzbot will keep track of this bug report. See: for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:

Powered by blists - more mailing lists