general protection fault in ip_set_comment_free
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syzbot
Jan 26, 2020, 1:57:12 PM1/26/20
to core...@netfilter.org, da...@davemloft.net, florent...@wifirst.fr, f...@strlen.de, jer...@azazel.net, johann...@intel.com, kad...@blackhole.kfki.hu, kad...@netfilter.org, linux-...@vger.kernel.org, net...@vger.kernel.org, netfilt...@vger.kernel.org, pa...@netfilter.org, syzkall...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: d5d359b0 Merge branch 'for-linus' of git://git.kernel.org/..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1366c611e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=cf8e288883e40aba
dashboard link: https://syzkaller.appspot.com/bug?extid=6a86565c74ebe30aea18
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12df0376e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14d225c9e00000
The bug was bisected to:
commit 23c42a403a9cfdbad6004a556c927be7dd61a8ee
Author: Jozsef Kadlecsik <kad...@blackhole.kfki.hu>
Date: Sat Oct 27 13:07:40 2018 +0000
netfilter: ipset: Introduction of new commands and protocol version 7
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12508376e00000
final crash: https://syzkaller.appspot.com/x/report.txt?x=11508376e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=16508376e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+6a8656...@syzkaller.appspotmail.com
Fixes: 23c42a403a9c ("netfilter: ipset: Introduction of new commands and protocol version 7")
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9800 Comm: syz-executor125 Not tainted 5.5.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527
Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24
RSP: 0018:ffffc90001fa6e90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff88808f875f18 RCX: 1ffffffff14f6ffe
RDX: 0000000000000042 RSI: ffffffff8673d9a1 RDI: 0000000000000214
RBP: ffffc90001fa6ea8 R08: ffff8880870de500 R09: ffffed1011f0ebe3
R10: ffffed1011f0ebe2 R11: ffff88808f875f17 R12: 0000000000000214
R13: 0000000000000204 R14: ffff8880a5508200 R15: ffff88808f875f00
FS: 00000000014a2880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a9778000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
strlen include/linux/string.h:302 [inline]
ip_set_comment_free+0x69/0xe0 net/netfilter/ipset/ip_set_core.c:402
ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:275 [inline]
ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:267 [inline]
hash_net4_add+0x1b9a/0x2200 net/netfilter/ipset/ip_set_hash_gen.h:766
hash_net4_uadt+0x596/0x940 net/netfilter/ipset/ip_set_hash_net.c:195
call_ad+0x1a0/0x5a0 net/netfilter/ipset/ip_set_core.c:1716
ip_set_ad.isra.0+0x572/0xb20 net/netfilter/ipset/ip_set_core.c:1804
ip_set_uadd+0x37/0x50 net/netfilter/ipset/ip_set_core.c:1829
nfnetlink_rcv_msg+0xcf2/0xfb0 net/netfilter/nfnetlink.c:229
netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
nfnetlink_rcv+0x1ba/0x460 net/netfilter/nfnetlink.c:563
netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328
netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:639 [inline]
sock_sendmsg+0xd7/0x130 net/socket.c:659
____sys_sendmsg+0x753/0x880 net/socket.c:2330
___sys_sendmsg+0x100/0x170 net/socket.c:2384
__sys_sendmsg+0x105/0x1d0 net/socket.c:2417
__do_sys_sendmsg net/socket.c:2426 [inline]
__se_sys_sendmsg net/socket.c:2424 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440379
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffcfb990398 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379
RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401c00
R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace a6760a9ec122842d ]---
RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527
Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24
RSP: 0018:ffffc90001fa6e90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff88808f875f18 RCX: 1ffffffff14f6ffe
RDX: 0000000000000042 RSI: ffffffff8673d9a1 RDI: 0000000000000214
RBP: ffffc90001fa6ea8 R08: ffff8880870de500 R09: ffffed1011f0ebe3
R10: ffffed1011f0ebe2 R11: ffff88808f875f17 R12: 0000000000000214
R13: 0000000000000204 R14: ffff8880a5508200 R15: ffff88808f875f00
FS: 00000000014a2880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a9778000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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 syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
syzbot found the following crash on:
HEAD commit: d5d359b0 Merge branch 'for-linus' of git://git.kernel.org/..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1366c611e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=cf8e288883e40aba
dashboard link: https://syzkaller.appspot.com/bug?extid=6a86565c74ebe30aea18
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12df0376e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14d225c9e00000
The bug was bisected to:
commit 23c42a403a9cfdbad6004a556c927be7dd61a8ee
Author: Jozsef Kadlecsik <kad...@blackhole.kfki.hu>
Date: Sat Oct 27 13:07:40 2018 +0000
netfilter: ipset: Introduction of new commands and protocol version 7
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12508376e00000
final crash: https://syzkaller.appspot.com/x/report.txt?x=11508376e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=16508376e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+6a8656...@syzkaller.appspotmail.com
Fixes: 23c42a403a9c ("netfilter: ipset: Introduction of new commands and protocol version 7")
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9800 Comm: syz-executor125 Not tainted 5.5.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527
Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24
RSP: 0018:ffffc90001fa6e90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff88808f875f18 RCX: 1ffffffff14f6ffe
RDX: 0000000000000042 RSI: ffffffff8673d9a1 RDI: 0000000000000214
RBP: ffffc90001fa6ea8 R08: ffff8880870de500 R09: ffffed1011f0ebe3
R10: ffffed1011f0ebe2 R11: ffff88808f875f17 R12: 0000000000000214
R13: 0000000000000204 R14: ffff8880a5508200 R15: ffff88808f875f00
FS: 00000000014a2880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a9778000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
strlen include/linux/string.h:302 [inline]
ip_set_comment_free+0x69/0xe0 net/netfilter/ipset/ip_set_core.c:402
ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:275 [inline]
ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:267 [inline]
hash_net4_add+0x1b9a/0x2200 net/netfilter/ipset/ip_set_hash_gen.h:766
hash_net4_uadt+0x596/0x940 net/netfilter/ipset/ip_set_hash_net.c:195
call_ad+0x1a0/0x5a0 net/netfilter/ipset/ip_set_core.c:1716
ip_set_ad.isra.0+0x572/0xb20 net/netfilter/ipset/ip_set_core.c:1804
ip_set_uadd+0x37/0x50 net/netfilter/ipset/ip_set_core.c:1829
nfnetlink_rcv_msg+0xcf2/0xfb0 net/netfilter/nfnetlink.c:229
netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
nfnetlink_rcv+0x1ba/0x460 net/netfilter/nfnetlink.c:563
netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328
netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:639 [inline]
sock_sendmsg+0xd7/0x130 net/socket.c:659
____sys_sendmsg+0x753/0x880 net/socket.c:2330
___sys_sendmsg+0x100/0x170 net/socket.c:2384
__sys_sendmsg+0x105/0x1d0 net/socket.c:2417
__do_sys_sendmsg net/socket.c:2426 [inline]
__se_sys_sendmsg net/socket.c:2424 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440379
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffcfb990398 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379
RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401c00
R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace a6760a9ec122842d ]---
RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527
Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24
RSP: 0018:ffffc90001fa6e90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff88808f875f18 RCX: 1ffffffff14f6ffe
RDX: 0000000000000042 RSI: ffffffff8673d9a1 RDI: 0000000000000214
RBP: ffffc90001fa6ea8 R08: ffff8880870de500 R09: ffffed1011f0ebe3
R10: ffffed1011f0ebe2 R11: ffff88808f875f17 R12: 0000000000000214
R13: 0000000000000204 R14: ffff8880a5508200 R15: ffff88808f875f00
FS: 00000000014a2880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a9778000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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 syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
syzbot
Jan 26, 2020, 6:28:03 PM1/26/20
to kad...@blackhole.kfki.hu, syzkall...@googlegroups.com
Hello,
syzbot has tested the proposed patch but the reproducer still triggered crash:
general protection fault in ip_set_comment_free
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8790 Comm: syz-executor.2 Not tainted 5.5.0-rc5-syzkaller #0
Code: 00 00 00 55 48 89 e5 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df 48 89 fb 0f 1f 80 00 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 0b 80 3b 00 48 8d 5b 01 75 e7 eb 13 89 d9
RSP: 0018:ffffc900029070b8 EFLAGS: 00010207
RAX: 0000000000000082 RBX: 0000000000000414 RCX: ffff888090f2a040
RDX: 0000000000000000 RSI: ffff88807b026018 RDI: 0000000000000414
RBP: ffffc900029070d0 R08: ffffffff86ad725d R09: ffffed100f604c03
R10: ffffed100f604c03 R11: 0000000000000000 R12: ffff8880a0368200
R13: ffff88807b026018 R14: 0000000000000414 R15: dffffc0000000000
FS: 00007f002a750700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:275 [inline]
hash_net4_add+0x11cb/0x2c90 net/netfilter/ipset/ip_set_hash_gen.h:766
hash_net4_uadt+0x72e/0x990 net/netfilter/ipset/ip_set_hash_net.c:195
call_ad+0x10a/0x5b0 net/netfilter/ipset/ip_set_core.c:1716
ip_set_ad+0x6a9/0x860 net/netfilter/ipset/ip_set_core.c:1804
ip_set_uadd+0x37/0x50 net/netfilter/ipset/ip_set_core.c:1829
nfnetlink_rcv_msg+0x9ae/0xcd0 net/netfilter/nfnetlink.c:229
netlink_rcv_skb+0x19e/0x3e0 net/netlink/af_netlink.c:2477
nfnetlink_rcv+0x1e0/0x1e50 net/netfilter/nfnetlink.c:563
netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
netlink_unicast+0x767/0x920 net/netlink/af_netlink.c:1328
netlink_sendmsg+0xa2c/0xd50 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:639 [inline]
sock_sendmsg net/socket.c:659 [inline]
____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2330
___sys_sendmsg net/socket.c:2384 [inline]
__sys_sendmsg+0x1ed/0x290 net/socket.c:2417
do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b349
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f002a74fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f002a7506d4 RCX: 000000000045b349
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000900 R14: 00000000004ca4cd R15: 000000000075bf2c
Modules linked in:
---[ end trace 48e31d53bbc21cf6 ]---
RIP: 0010:strlen+0x27/0x60 lib/string.c:527
Code: 00 00 00 55 48 89 e5 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df 48 89 fb 0f 1f 80 00 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 0b 80 3b 00 48 8d 5b 01 75 e7 eb 13 89 d9
RSP: 0018:ffffc900029070b8 EFLAGS: 00010207
RAX: 0000000000000082 RBX: 0000000000000414 RCX: ffff888090f2a040
RDX: 0000000000000000 RSI: ffff88807b026018 RDI: 0000000000000414
RBP: ffffc900029070d0 R08: ffffffff86ad725d R09: ffffed100f604c03
R10: ffffed100f604c03 R11: 0000000000000000 R12: ffff8880a0368200
R13: ffff88807b026018 R14: 0000000000000414 R15: dffffc0000000000
FS: 00007f002a750700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
commit: d949ae9b netfilter: ipset: fix general protection fault in..
git tree: git://blackhole.kfki.hu/nf master
console output: https://syzkaller.appspot.com/x/log.txt?x=172715c9e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=30677149b0194629
dashboard link: https://syzkaller.appspot.com/bug?extid=6a86565c74ebe30aea18
compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
syzbot has tested the proposed patch but the reproducer still triggered crash:
general protection fault in ip_set_comment_free
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:strlen+0x27/0x60 lib/string.c:527
Code: 00 00 00 55 48 89 e5 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df 48 89 fb 0f 1f 80 00 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 0b 80 3b 00 48 8d 5b 01 75 e7 eb 13 89 d9
RSP: 0018:ffffc900029070b8 EFLAGS: 00010207
RAX: 0000000000000082 RBX: 0000000000000414 RCX: ffff888090f2a040
RDX: 0000000000000000 RSI: ffff88807b026018 RDI: 0000000000000414
RBP: ffffc900029070d0 R08: ffffffff86ad725d R09: ffffed100f604c03
R10: ffffed100f604c03 R11: 0000000000000000 R12: ffff8880a0368200
R13: ffff88807b026018 R14: 0000000000000414 R15: dffffc0000000000
FS: 00007f002a750700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001080 CR3: 0000000097dd1000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ip_set_comment_free+0x54/0xd0 net/netfilter/ipset/ip_set_core.c:402
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:275 [inline]
hash_net4_add+0x11cb/0x2c90 net/netfilter/ipset/ip_set_hash_gen.h:766
hash_net4_uadt+0x72e/0x990 net/netfilter/ipset/ip_set_hash_net.c:195
call_ad+0x10a/0x5b0 net/netfilter/ipset/ip_set_core.c:1716
ip_set_ad+0x6a9/0x860 net/netfilter/ipset/ip_set_core.c:1804
ip_set_uadd+0x37/0x50 net/netfilter/ipset/ip_set_core.c:1829
nfnetlink_rcv_msg+0x9ae/0xcd0 net/netfilter/nfnetlink.c:229
netlink_rcv_skb+0x19e/0x3e0 net/netlink/af_netlink.c:2477
nfnetlink_rcv+0x1e0/0x1e50 net/netfilter/nfnetlink.c:563
netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
netlink_unicast+0x767/0x920 net/netlink/af_netlink.c:1328
netlink_sendmsg+0xa2c/0xd50 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:639 [inline]
sock_sendmsg net/socket.c:659 [inline]
____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2330
___sys_sendmsg net/socket.c:2384 [inline]
__sys_sendmsg+0x1ed/0x290 net/socket.c:2417
__do_sys_sendmsg net/socket.c:2426 [inline]
__se_sys_sendmsg net/socket.c:2424 [inline]
__x64_sys_sendmsg+0x7f/0x90 net/socket.c:2424
__se_sys_sendmsg net/socket.c:2424 [inline]
do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b349
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f002a74fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f002a7506d4 RCX: 000000000045b349
RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000900 R14: 00000000004ca4cd R15: 000000000075bf2c
Modules linked in:
---[ end trace 48e31d53bbc21cf6 ]---
RIP: 0010:strlen+0x27/0x60 lib/string.c:527
Code: 00 00 00 55 48 89 e5 41 57 41 56 53 49 89 fe 49 bf 00 00 00 00 00 fc ff df 48 89 fb 0f 1f 80 00 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 0b 80 3b 00 48 8d 5b 01 75 e7 eb 13 89 d9
RSP: 0018:ffffc900029070b8 EFLAGS: 00010207
RAX: 0000000000000082 RBX: 0000000000000414 RCX: ffff888090f2a040
RDX: 0000000000000000 RSI: ffff88807b026018 RDI: 0000000000000414
RBP: ffffc900029070d0 R08: ffffffff86ad725d R09: ffffed100f604c03
R10: ffffed100f604c03 R11: 0000000000000000 R12: ffff8880a0368200
R13: ffff88807b026018 R14: 0000000000000414 R15: dffffc0000000000
FS: 00007f002a750700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001080 CR3: 0000000097dd1000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Tested on:
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
commit: d949ae9b netfilter: ipset: fix general protection fault in..
git tree: git://blackhole.kfki.hu/nf master
console output: https://syzkaller.appspot.com/x/log.txt?x=172715c9e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=30677149b0194629
dashboard link: https://syzkaller.appspot.com/bug?extid=6a86565c74ebe30aea18
compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
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