general protection fault in vxlan_fdb_destroy
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syzbot
Apr 6, 2020, 5:46:13 PM4/6/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: dda0e292 Linux 4.19.114
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1269a257e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=f32ac7e5b2d5c341
dashboard link: https://syzkaller.appspot.com/bug?extid=4c8b77cc62b32548e0a8
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+4c8b77...@syzkaller.appspotmail.com
Unknown ioctl -2108641626
ptrace attach of "/root/syz-executor.3"[28240] was attempted by "/root/syz-executor.3"[28243]
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: 28247 Comm: syz-executor.5 Not tainted 4.19.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RSP: 0018:ffff88821358ed20 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff888085b50280 RCX: ffffc90010716000
RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8880446d8180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff888085b50288 R14: ffff88821358ee40 R15: ffff88808df92180
FS: 00007fe26159a700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020fff000 CR3: 000000021ae59000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__vxlan_dev_create+0x48d/0x840 drivers/net/vxlan.c:3268
vxlan_newlink+0xc0/0x120 drivers/net/vxlan.c:3495
rtnl_newlink+0xf03/0x1440 net/core/rtnetlink.c:3141
rtnetlink_rcv_msg+0x453/0xaf0 net/core/rtnetlink.c:4777
netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x80b/0xcd0 net/netlink/af_netlink.c:1909
sock_sendmsg_nosec net/socket.c:622 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:632
sock_no_sendpage+0xf8/0x140 net/core/sock.c:2645
kernel_sendpage+0x82/0xd0 net/socket.c:3378
sock_sendpage+0x84/0xa0 net/socket.c:847
pipe_to_sendpage+0x263/0x320 fs/splice.c:452
splice_from_pipe_feed fs/splice.c:503 [inline]
__splice_from_pipe+0x38f/0x7a0 fs/splice.c:627
splice_from_pipe+0xd9/0x140 fs/splice.c:662
do_splice_from fs/splice.c:852 [inline]
do_splice+0x5ea/0x1250 fs/splice.c:1154
__do_sys_splice fs/splice.c:1428 [inline]
__se_sys_splice fs/splice.c:1408 [inline]
__x64_sys_splice+0x2b5/0x320 fs/splice.c:1408
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c879
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:00007fe261599c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007fe26159a6d4 RCX: 000000000045c879
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000076bfa0 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000ba2 R14: 00000000004ce6aa R15: 000000000076bfac
Modules linked in:
---[ end trace 5e1dfbc993a866a6 ]---
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RSP: 0018:ffff88821358ed20 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff888085b50280 RCX: ffffc90010716000
RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8880446d8180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff888085b50288 R14: ffff88821358ee40 R15: ffff88808df92180
FS: 00007fe26159a700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9d0c6ecdb8 CR3: 000000021ae59000 CR4: 00000000001426e0
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.
syzbot found the following crash on:
HEAD commit: dda0e292 Linux 4.19.114
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1269a257e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=f32ac7e5b2d5c341
dashboard link: https://syzkaller.appspot.com/bug?extid=4c8b77cc62b32548e0a8
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+4c8b77...@syzkaller.appspotmail.com
Unknown ioctl -2108641626
ptrace attach of "/root/syz-executor.3"[28240] was attempted by "/root/syz-executor.3"[28243]
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: 28247 Comm: syz-executor.5 Not tainted 4.19.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RSP: 0018:ffff88821358ed20 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff888085b50280 RCX: ffffc90010716000
RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8880446d8180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff888085b50288 R14: ffff88821358ee40 R15: ffff88808df92180
FS: 00007fe26159a700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020fff000 CR3: 000000021ae59000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__vxlan_dev_create+0x48d/0x840 drivers/net/vxlan.c:3268
vxlan_newlink+0xc0/0x120 drivers/net/vxlan.c:3495
rtnl_newlink+0xf03/0x1440 net/core/rtnetlink.c:3141
rtnetlink_rcv_msg+0x453/0xaf0 net/core/rtnetlink.c:4777
netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x80b/0xcd0 net/netlink/af_netlink.c:1909
sock_sendmsg_nosec net/socket.c:622 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:632
sock_no_sendpage+0xf8/0x140 net/core/sock.c:2645
kernel_sendpage+0x82/0xd0 net/socket.c:3378
sock_sendpage+0x84/0xa0 net/socket.c:847
pipe_to_sendpage+0x263/0x320 fs/splice.c:452
splice_from_pipe_feed fs/splice.c:503 [inline]
__splice_from_pipe+0x38f/0x7a0 fs/splice.c:627
splice_from_pipe+0xd9/0x140 fs/splice.c:662
do_splice_from fs/splice.c:852 [inline]
do_splice+0x5ea/0x1250 fs/splice.c:1154
__do_sys_splice fs/splice.c:1428 [inline]
__se_sys_splice fs/splice.c:1408 [inline]
__x64_sys_splice+0x2b5/0x320 fs/splice.c:1408
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c879
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:00007fe261599c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007fe26159a6d4 RCX: 000000000045c879
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000076bfa0 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000ba2 R14: 00000000004ce6aa R15: 000000000076bfac
Modules linked in:
---[ end trace 5e1dfbc993a866a6 ]---
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RSP: 0018:ffff88821358ed20 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff888085b50280 RCX: ffffc90010716000
RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8880446d8180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff888085b50288 R14: ffff88821358ee40 R15: ffff88808df92180
FS: 00007fe26159a700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9d0c6ecdb8 CR3: 000000021ae59000 CR4: 00000000001426e0
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.
syzbot
Apr 6, 2020, 5:46:14 PM4/6/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 4520f06b Linux 4.14.175
syzbot found the following crash on:
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=142a05cde00000
kernel config: https://syzkaller.appspot.com/x/.config?x=93cf891381c0c347
dashboard link: https://syzkaller.appspot.com/bug?extid=3b14afbee93c0aad6e10
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+3b14af...@syzkaller.appspotmail.com
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26367 comm=syz-executor.2
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 26391 Comm: syz-executor.0 Not tainted 4.14.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88808a8a0000 task.stack: ffff888036ca8000
RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:427 [inline]
RIP: 0010:vxlan_fdb_destroy+0xa3/0x1b0 drivers/net/vxlan.c:787
RSP: 0018:ffff888036caf128 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff888035ed4580 RCX: ffffc90005c71000
RDX: 1bd5a00000000040 RSI: ffffffff83dd30b1 RDI: ffff88804f80d1c0
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff888035ed4588 R14: ffff888036caf228 R15: ffff88804f80d080
FS: 00007f9a38b78700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30c25000 CR3: 0000000034242000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
__vxlan_dev_create+0x3bc/0x710 drivers/net/vxlan.c:3272
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26367 comm=syz-executor.2
vxlan_newlink+0xa3/0xe0 drivers/net/vxlan.c:3493
rtnl_newlink+0xecb/0x1720 net/core/rtnetlink.c:2728
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26367 comm=syz-executor.2
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26367 comm=syz-executor.2
rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4315
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26367 comm=syz-executor.2
netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26367 comm=syz-executor.2
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xc5/0x100 net/socket.c:656
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26367 comm=syz-executor.2
sock_no_sendpage+0xe5/0x110 net/core/sock.c:2572
kernel_sendpage+0x82/0xd0 net/socket.c:3407
sock_sendpage+0x84/0xa0 net/socket.c:871
pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451
splice_from_pipe_feed fs/splice.c:502 [inline]
__splice_from_pipe+0x332/0x740 fs/splice.c:626
splice_from_pipe+0xc6/0x120 fs/splice.c:661
do_splice_from fs/splice.c:851 [inline]
do_splice fs/splice.c:1147 [inline]
SYSC_splice fs/splice.c:1402 [inline]
SyS_splice+0xca0/0x1230 fs/splice.c:1382
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c879
RSP: 002b:00007f9a38b77c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007f9a38b786d4 RCX: 000000000045c879
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000076bfa0 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000ba2 R14: 00000000004ce6aa R15: 000000000076bfac
Code: 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 85
RBP: 000000000076bfa0 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000ba2 R14: 00000000004ce6aa R15: 000000000076bfac
RIP: __write_once_size include/linux/compiler.h:210 [inline] RSP: ffff888036caf128
RIP: __hlist_del include/linux/list.h:679 [inline] RSP: ffff888036caf128
RIP: hlist_del_rcu include/linux/rculist.h:427 [inline] RSP: ffff888036caf128
RIP: vxlan_fdb_destroy+0xa3/0x1b0 drivers/net/vxlan.c:787 RSP: ffff888036caf128
---[ end trace 61f0f70238168ac0 ]---
syzbot
Apr 8, 2020, 1:04:15 AM4/8/20
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: dda0e292 Linux 4.19.114
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=138fa9b3e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13dfda9fe00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+4c8b77...@syzkaller.appspotmail.com
RAX: dffffc0000000000 RBX: ffff8880a5249500 RCX: ffffffff8454780d
FS: 00007fe360518700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
RIP: 0033:0x44a319
Code: 7d d6 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 4b d6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe360517cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 000000000044a319
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000006dbc50 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc5c
R13: 00007fff8cc6cd6f R14: 00007fe3605189c0 R15: 20c49ba5e353f7cf
Modules linked in:
---[ end trace abe2eae1c21c0ee4 ]---
RAX: dffffc0000000000 RBX: ffff8880a5249500 RCX: ffffffff8454780d
FS: 00007fe360518700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
HEAD commit: dda0e292 Linux 4.19.114
git tree: linux-4.19.y
kernel config: https://syzkaller.appspot.com/x/.config?x=f32ac7e5b2d5c341
dashboard link: https://syzkaller.appspot.com/bug?extid=4c8b77cc62b32548e0a8
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17be252be00000
dashboard link: https://syzkaller.appspot.com/bug?extid=4c8b77cc62b32548e0a8
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13dfda9fe00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+4c8b77...@syzkaller.appspotmail.com
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: 1 PID: 6463 Comm: syz-executor966 Not tainted 4.19.114-syzkaller #0
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:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RSP: 0018:ffff888085566d20 EFLAGS: 00010a02
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RAX: dffffc0000000000 RBX: ffff8880a5249500 RCX: ffffffff8454780d
RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8880a4ed4380 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff8880a5249508 R14: ffff888085566e40 R15: ffff88809670a480
FS: 00007fe360518700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ca82aee920 CR3: 0000000090b4e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Code: 7d d6 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 4b d6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe360517cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 000000000044a319
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000006dbc50 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc5c
R13: 00007fff8cc6cd6f R14: 00007fe3605189c0 R15: 20c49ba5e353f7cf
Modules linked in:
---[ end trace abe2eae1c21c0ee4 ]---
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RSP: 0018:ffff888085566d20 EFLAGS: 00010a02
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:457 [inline]
RIP: 0010:vxlan_fdb_destroy+0xad/0x1c0 drivers/net/vxlan.c:788
Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 eb 2b
RAX: dffffc0000000000 RBX: ffff8880a5249500 RCX: ffffffff8454780d
RDX: 1bd5a00000000040 RSI: ffffffff8454781b RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff8880a4ed4380 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff8880a5249508 R14: ffff888085566e40 R15: ffff88809670a480
FS: 00007fe360518700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe360517db8 CR3: 0000000090b4e000 CR4: 00000000001406f0
syzbot
Apr 11, 2020, 10:34:16 PM4/11/20
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: 4520f06b Linux 4.14.175
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12caabb3e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12ab2407e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+3b14af...@syzkaller.appspotmail.com
RAX: dffffc0000000000 RBX: ffff88809d9f5600 RCX: 1ffff11013075e1b
RDX: 1bd5a00000000040 RSI: ffff88809d9f5600 RDI: ffff8880863492c0
FS: 00007fead4448700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
RSP: 002b:00007fead4447d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 0000000000445ac9
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 0000000000000000 R14: 0000000000000000 R15: 0705001000000048
RIP: __hlist_del include/linux/list.h:679 [inline] RSP: ffff8880983af128
RIP: hlist_del_rcu include/linux/rculist.h:427 [inline] RSP: ffff8880983af128
RIP: vxlan_fdb_destroy+0xa3/0x1b0 drivers/net/vxlan.c:787 RSP: ffff8880983af128
---[ end trace 1f333a461c6edc6b ]---
HEAD commit: 4520f06b Linux 4.14.175
git tree: linux-4.14.y
kernel config: https://syzkaller.appspot.com/x/.config?x=93cf891381c0c347
dashboard link: https://syzkaller.appspot.com/bug?extid=3b14afbee93c0aad6e10
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1592edafe00000
dashboard link: https://syzkaller.appspot.com/bug?extid=3b14afbee93c0aad6e10
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12ab2407e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+3b14af...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 6347 Comm: syz-executor362 Not tainted 4.14.175-syzkaller #0
Modules linked in:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888097ddc2c0 task.stack: ffff8880983a8000
RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline]
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:427 [inline]
RIP: 0010:vxlan_fdb_destroy+0xa3/0x1b0 drivers/net/vxlan.c:787
RSP: 0018:ffff8880983af128 EFLAGS: 00010a02
RIP: 0010:__hlist_del include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:427 [inline]
RIP: 0010:vxlan_fdb_destroy+0xa3/0x1b0 drivers/net/vxlan.c:787
RAX: dffffc0000000000 RBX: ffff88809d9f5600 RCX: 1ffff11013075e1b
RDX: 1bd5a00000000040 RSI: ffff88809d9f5600 RDI: ffff8880863492c0
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: ffff88809d9f5608 R14: ffff8880983af228 R15: ffff888086349180
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
FS: 00007fead4448700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f0290df920 CR3: 00000000a90df000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__vxlan_dev_create+0x3bc/0x710 drivers/net/vxlan.c:3272
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__vxlan_dev_create+0x3bc/0x710 drivers/net/vxlan.c:3272
vxlan_newlink+0xa3/0xe0 drivers/net/vxlan.c:3493
rtnl_newlink+0xecb/0x1720 net/core/rtnetlink.c:2728
rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4315
rtnl_newlink+0xecb/0x1720 net/core/rtnetlink.c:2728
netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xc5/0x100 net/socket.c:656
sock_sendmsg+0xc5/0x100 net/socket.c:656
sock_no_sendpage+0xe5/0x110 net/core/sock.c:2572
kernel_sendpage+0x82/0xd0 net/socket.c:3407
sock_sendpage+0x84/0xa0 net/socket.c:871
pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451
splice_from_pipe_feed fs/splice.c:502 [inline]
__splice_from_pipe+0x332/0x740 fs/splice.c:626
splice_from_pipe+0xc6/0x120 fs/splice.c:661
do_splice_from fs/splice.c:851 [inline]
do_splice fs/splice.c:1147 [inline]
SYSC_splice fs/splice.c:1402 [inline]
SyS_splice+0xca0/0x1230 fs/splice.c:1382
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x445ac9
kernel_sendpage+0x82/0xd0 net/socket.c:3407
sock_sendpage+0x84/0xa0 net/socket.c:871
pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451
splice_from_pipe_feed fs/splice.c:502 [inline]
__splice_from_pipe+0x332/0x740 fs/splice.c:626
splice_from_pipe+0xc6/0x120 fs/splice.c:661
do_splice_from fs/splice.c:851 [inline]
do_splice fs/splice.c:1147 [inline]
SYSC_splice fs/splice.c:1402 [inline]
SyS_splice+0xca0/0x1230 fs/splice.c:1382
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RSP: 002b:00007fead4447d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 0000000000445ac9
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000006dac50 R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 0000000000000000 R14: 0000000000000000 R15: 0705001000000048
Code: 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 fe 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 00 00 00 48 85 ed 49 89 2c 24 74 28 e8 85
RIP: __write_once_size include/linux/compiler.h:210 [inline] RSP: ffff8880983af128
RIP: __hlist_del include/linux/list.h:679 [inline] RSP: ffff8880983af128
RIP: hlist_del_rcu include/linux/rculist.h:427 [inline] RSP: ffff8880983af128
RIP: vxlan_fdb_destroy+0xa3/0x1b0 drivers/net/vxlan.c:787 RSP: ffff8880983af128
---[ end trace 1f333a461c6edc6b ]---
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