LVS
lvs-devel
[Top] [All Lists]
Google
 
Web LinuxVirtualServer.org
<prev [Date] next> <prev [Thread] next>

memory leak in start_sync_thread

from [syzbot] [Permanent Link]
To: coreteam@xxxxxxxxxxxxx, davem@xxxxxxxxxxxxx, fw@xxxxxxxxx, horms@xxxxxxxxxxxx, ja@xxxxxx, kadlec@xxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, lvs-devel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, pablo@xxxxxxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx, wensong@xxxxxxxxxxxx
Subject: memory leak in start_sync_thread
From: syzbot <syzbot+7e2e50c8adfccd2e5041@xxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 28 May 2019 11:28:05 -0700 
Hello,

syzbot found the following crash on:

HEAD commit:    cd6c84d8 Linux 5.2-rc2
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=132bd44aa00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=64479170dcaf0e11
dashboard link: https://syzkaller.appspot.com/bug?extid=7e2e50c8adfccd2e5041
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=114b1354a00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14b7ad26a00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7e2e50c8adfccd2e5041@xxxxxxxxxxxxxxxxxxxxxxxxx

d started: state = MASTER, mcast_ifn = syz_tun, syncid = 0, id = 0
BUG: memory leak
unreferenced object 0xffff8881206bf700 (size 32):
  comm "syz-executor761", pid 7268, jiffies 4294943441 (age 20.470s)
  hex dump (first 32 bytes):
    00 40 7c 09 81 88 ff ff 80 45 b8 21 81 88 ff ff  .@|......E.!....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
[<0000000057619e23>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] 
    [<0000000057619e23>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<0000000057619e23>] slab_alloc mm/slab.c:3326 [inline]
    [<0000000057619e23>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000086ce5479>] kmalloc include/linux/slab.h:547 [inline]
[<0000000086ce5479>] start_sync_thread+0x5d2/0xe10 net/netfilter/ipvs/ip_vs_sync.c:1862 [<000000001a9229cc>] do_ip_vs_set_ctl+0x4c5/0x780 net/netfilter/ipvs/ip_vs_ctl.c:2402 
    [<00000000ece457c8>] nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
[<00000000ece457c8>] nf_setsockopt+0x4c/0x80 net/netfilter/nf_sockopt.c:115 
    [<00000000942f62d4>] ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline]
    [<00000000942f62d4>] ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1238
    [<00000000a56a8ffd>] udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2616
[<00000000fa895401>] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3130 
    [<0000000095eef4cf>] __sys_setsockopt+0x98/0x120 net/socket.c:2078
    [<000000009747cf88>] __do_sys_setsockopt net/socket.c:2089 [inline]
    [<000000009747cf88>] __se_sys_setsockopt net/socket.c:2086 [inline]
    [<000000009747cf88>] __x64_sys_setsockopt+0x26/0x30 net/socket.c:2086
[<00000000ded8ba80>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 
    [<00000000893b4ac8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881206bf700 (size 32):
  comm "syz-executor761", pid 7268, jiffies 4294943441 (age 21.530s)
  hex dump (first 32 bytes):
    00 40 7c 09 81 88 ff ff 80 45 b8 21 81 88 ff ff  .@|......E.!....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
[<0000000057619e23>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] 
    [<0000000057619e23>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<0000000057619e23>] slab_alloc mm/slab.c:3326 [inline]
    [<0000000057619e23>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000086ce5479>] kmalloc include/linux/slab.h:547 [inline]
[<0000000086ce5479>] start_sync_thread+0x5d2/0xe10 net/netfilter/ipvs/ip_vs_sync.c:1862 [<000000001a9229cc>] do_ip_vs_set_ctl+0x4c5/0x780 net/netfilter/ipvs/ip_vs_ctl.c:2402 
    [<00000000ece457c8>] nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
[<00000000ece457c8>] nf_setsockopt+0x4c/0x80 net/netfilter/nf_sockopt.c:115 
    [<00000000942f62d4>] ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline]
    [<00000000942f62d4>] ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1238
    [<00000000a56a8ffd>] udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2616
[<00000000fa895401>] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3130 
    [<0000000095eef4cf>] __sys_setsockopt+0x98/0x120 net/socket.c:2078
    [<000000009747cf88>] __do_sys_setsockopt net/socket.c:2089 [inline]
    [<000000009747cf88>] __se_sys_setsockopt net/socket.c:2086 [inline]
    [<000000009747cf88>] __x64_sys_setsockopt+0x26/0x30 net/socket.c:2086
[<00000000ded8ba80>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 
    [<00000000893b4ac8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881206bf700 (size 32):
  comm "syz-executor761", pid 7268, jiffies 4294943441 (age 22.630s)
  hex dump (first 32 bytes):
    00 40 7c 09 81 88 ff ff 80 45 b8 21 81 88 ff ff  .@|......E.!....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
[<0000000057619e23>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] 
    [<0000000057619e23>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<0000000057619e23>] slab_alloc mm/slab.c:3326 [inline]
    [<0000000057619e23>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000086ce5479>] kmalloc include/linux/slab.h:547 [inline]
[<0000000086ce5479>] start_sync_thread+0x5d2/0xe10 net/netfilter/ipvs/ip_vs_sync.c:1862 [<000000001a9229cc>] do_ip_vs_set_ctl+0x4c5/0x780 net/netfilter/ipvs/ip_vs_ctl.c:2402 
    [<00000000ece457c8>] nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
[<00000000ece457c8>] nf_setsockopt+0x4c/0x80 net/netfilter/nf_sockopt.c:115 
    [<00000000942f62d4>] ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline]
    [<00000000942f62d4>] ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1238
    [<00000000a56a8ffd>] udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2616
[<00000000fa895401>] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3130 
    [<0000000095eef4cf>] __sys_setsockopt+0x98/0x120 net/socket.c:2078
    [<000000009747cf88>] __do_sys_setsockopt net/socket.c:2089 [inline]
    [<000000009747cf88>] __se_sys_setsockopt net/socket.c:2086 [inline]
    [<000000009747cf88>] __x64_sys_setsockopt+0x26/0x30 net/socket.c:2086
[<00000000ded8ba80>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 
    [<00000000893b4ac8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881206bf700 (size 32):
  comm "syz-executor761", pid 7268, jiffies 4294943441 (age 23.720s)
  hex dump (first 32 bytes):
    00 40 7c 09 81 88 ff ff 80 45 b8 21 81 88 ff ff  .@|......E.!....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
[<0000000057619e23>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] 
    [<0000000057619e23>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<0000000057619e23>] slab_alloc mm/slab.c:3326 [inline]
    [<0000000057619e23>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000086ce5479>] kmalloc include/linux/slab.h:547 [inline]
[<0000000086ce5479>] start_sync_thread+0x5d2/0xe10 net/netfilter/ipvs/ip_vs_sync.c:1862 [<000000001a9229cc>] do_ip_vs_set_ctl+0x4c5/0x780 net/netfilter/ipvs/ip_vs_ctl.c:2402 
    [<00000000ece457c8>] nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
[<00000000ece457c8>] nf_setsockopt+0x4c/0x80 net/netfilter/nf_sockopt.c:115 
    [<00000000942f62d4>] ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline]
    [<00000000942f62d4>] ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1238
    [<00000000a56a8ffd>] udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2616
[<00000000fa895401>] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3130 
    [<0000000095eef4cf>] __sys_setsockopt+0x98/0x120 net/socket.c:2078
    [<000000009747cf88>] __do_sys_setsockopt net/socket.c:2089 [inline]
    [<000000009747cf88>] __se_sys_setsockopt net/socket.c:2086 [inline]
    [<000000009747cf88>] __x64_sys_setsockopt+0x26/0x30 net/socket.c:2086
[<00000000ded8ba80>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 
    [<00000000893b4ac8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881206bf700 (size 32):
  comm "syz-executor761", pid 7268, jiffies 4294943441 (age 25.770s)
  hex dump (first 32 bytes):
    00 40 7c 09 81 88 ff ff 80 45 b8 21 81 88 ff ff  .@|......E.!....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
[<0000000057619e23>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] 
    [<0000000057619e23>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<0000000057619e23>] slab_alloc mm/slab.c:3326 [inline]
    [<0000000057619e23>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000086ce5479>] kmalloc include/linux/slab.h:547 [inline]
[<0000000086ce5479>] start_sync_thread+0x5d2/0xe10 net/netfilter/ipvs/ip_vs_sync.c:1862 [<000000001a9229cc>] do_ip_vs_set_ctl+0x4c5/0x780 net/netfilter/ipvs/ip_vs_ctl.c:2402 
    [<00000000ece457c8>] nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
[<00000000ece457c8>] nf_setsockopt+0x4c/0x80 net/netfilter/nf_sockopt.c:115 
    [<00000000942f62d4>] ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline]
    [<00000000942f62d4>] ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1238
    [<00000000a56a8ffd>] udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2616
[<00000000fa895401>] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3130 
    [<0000000095eef4cf>] __sys_setsockopt+0x98/0x120 net/socket.c:2078
    [<000000009747cf88>] __do_sys_setsockopt net/socket.c:2089 [inline]
    [<000000009747cf88>] __se_sys_setsockopt net/socket.c:2086 [inline]
    [<000000009747cf88>] __x64_sys_setsockopt+0x26/0x30 net/socket.c:2086
[<00000000ded8ba80>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 
    [<00000000893b4ac8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881206bf700 (size 32):
  comm "syz-executor761", pid 7268, jiffies 4294943441 (age 26.850s)
  hex dump (first 32 bytes):
    00 40 7c 09 81 88 ff ff 80 45 b8 21 81 88 ff ff  .@|......E.!....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
[<0000000057619e23>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] 
    [<0000000057619e23>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<0000000057619e23>] slab_alloc mm/slab.c:3326 [inline]
    [<0000000057619e23>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000086ce5479>] kmalloc include/linux/slab.h:547 [inline]
[<0000000086ce5479>] start_sync_thread+0x5d2/0xe10 net/netfilter/ipvs/ip_vs_sync.c:1862 [<000000001a9229cc>] do_ip_vs_set_ctl+0x4c5/0x780 net/netfilter/ipvs/ip_vs_ctl.c:2402 
    [<00000000ece457c8>] nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
[<00000000ece457c8>] nf_setsockopt+0x4c/0x80 net/netfilter/nf_sockopt.c:115 
    [<00000000942f62d4>] ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline]
    [<00000000942f62d4>] ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1238
    [<00000000a56a8ffd>] udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2616
[<00000000fa895401>] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3130 
    [<0000000095eef4cf>] __sys_setsockopt+0x98/0x120 net/socket.c:2078
    [<000000009747cf88>] __do_sys_setsockopt net/socket.c:2089 [inline]
    [<000000009747cf88>] __se_sys_setsockopt net/socket.c:2086 [inline]
    [<000000009747cf88>] __x64_sys_setsockopt+0x26/0x30 net/socket.c:2086
[<00000000ded8ba80>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 
    [<00000000893b4ac8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881206bf700 (size 32):
  comm "syz-executor761", pid 7268, jiffies 4294943441 (age 27.940s)
  hex dump (first 32 bytes):
    00 40 7c 09 81 88 ff ff 80 45 b8 21 81 88 ff ff  .@|......E.!....
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
[<0000000057619e23>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] 
    [<0000000057619e23>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<0000000057619e23>] slab_alloc mm/slab.c:3326 [inline]
    [<0000000057619e23>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000086ce5479>] kmalloc include/linux/slab.h:547 [inline]
[<0000000086ce5479>] start_sync_thread+0x5d2/0xe10 net/netfilter/ipvs/ip_vs_sync.c:1862 [<000000001a9229cc>] do_ip_vs_set_ctl+0x4c5/0x780 net/netfilter/ipvs/ip_vs_ctl.c:2402 
    [<00000000ece457c8>] nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
[<00000000ece457c8>] nf_setsockopt+0x4c/0x80 net/netfilter/nf_sockopt.c:115 
    [<00000000942f62d4>] ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline]
    [<00000000942f62d4>] ip_setsockopt+0x9b/0xb0 net/ipv4/ip_sockglue.c:1238
    [<00000000a56a8ffd>] udp_setsockopt+0x4e/0x90 net/ipv4/udp.c:2616
[<00000000fa895401>] sock_common_setsockopt+0x38/0x50 net/core/sock.c:3130 
    [<0000000095eef4cf>] __sys_setsockopt+0x98/0x120 net/socket.c:2078
    [<000000009747cf88>] __do_sys_setsockopt net/socket.c:2089 [inline]
    [<000000009747cf88>] __se_sys_setsockopt net/socket.c:2086 [inline]
    [<000000009747cf88>] __x64_sys_setsockopt+0x26/0x30 net/socket.c:2086
[<00000000ded8ba80>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 
    [<00000000893b4ac8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

executing program


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
[More with this subject...]
<Prev in Thread] Current Thread [Next in Thread>
  • memory leak in start_sync_thread, syzbot <=
Previous by Date:  Purchase_rfq, aishatu
Next by Date:  Re: [PATCH v2] ipvs: add checksum support for gue encapsulation, Julian Anastasov
Previous by Thread:  Purchase_rfq, aishatu
Next by Thread:  [PATCH v3] ipvs: add checksum support for gue encapsulation, Jacky Hu
Indexes:  [Date] [Thread] [Top] [All Lists]