Hello,
When using Healer to fuzz the latest Linux kernel, the following crash
was triggered.
HEAD commit: 9e9fb7655ed58 Merge tag 'net-next-5.15'
git tree: upstream
console output:
https://drive.google.com/file/d/1AXEQDnn7SPgFAMjqbL03_24-X_8YHoAq/view?usp=sharing
kernel config: https://drive.google.com/file/d/1zgxbwaYkrM26KEmJ-5sUZX57gfXtRrwA/view?usp=sharing
C reproducer: https://drive.google.com/file/d/1qa4FVNoO-EsJGuDMtGlTxtHW0li-vMSP/view?usp=sharing
Syzlang reproducer:
https://drive.google.com/file/d/1pL6atNID5ZGzH4GceqyBCOC5IjFfiaVN/view?usp=sharing
If you fix this issue, please add the following tag to the commit:
Reported-by: Hao Sun <[email protected]>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 10229 at net/core/stream.c:207
sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
Modules linked in:
CPU: 1 PID: 10229 Comm: syz-executor Not tainted 5.14.0+ #12
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
Code: 41 5c e9 21 3b ce fd e8 1c 3b ce fd 89 de 48 89 ef e8 62 68 fe
ff e8 0d 3b ce fd 8b 95 68 02 00 00 85 d2 74 ca e8 fe 3a ce fd <0f> 0b
e8 f7 3a ce fd 8b 85 20 02 00 00 85 c0 74 c3 e8 e8 3a ce fd
RSP: 0018:ffffc900080b7c98 EFLAGS: 00010202
RAX: 000000000002a750 RBX: 0000000000000180 RCX: ffffc90002c0d000
RDX: 0000000000040000 RSI: ffffffff836939f2 RDI: ffff8881031f0b40
RBP: ffff8881031f0b40 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000d R11: 000000000004f380 R12: ffff8881031f0c90
R13: ffff8881031f0bc0 R14: ffff8881031f0cf0 R15: 0000000000000000
FS: 00007f311adcb700(0000) GS:ffff88813dc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000732190 CR3: 000000010ab01000 CR4: 0000000000752ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
inet_csk_destroy_sock+0x6f/0x1a0 net/ipv4/inet_connection_sock.c:1012
__tcp_close+0x512/0x610 net/ipv4/tcp.c:2869
tcp_close+0x29/0xa0 net/ipv4/tcp.c:2881
inet_release+0x58/0xb0 net/ipv4/af_inet.c:431
__sock_release+0x47/0xf0 net/socket.c:649
sock_close+0x18/0x20 net/socket.c:1314
__fput+0xdf/0x380 fs/file_table.c:280
task_work_run+0x86/0xd0 kernel/task_work.c:164
get_signal+0xde6/0x10b0 kernel/signal.c:2596
arch_do_signal_or_restart+0xa9/0x860 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0xf2/0x280 kernel/entry/common.c:209
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
do_syscall_64+0x40/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x46a9a9
Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f311adcac58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: 0000000000069340 RBX: 000000000078c0a0 RCX: 000000000046a9a9
RDX: 0000000000088012 RSI: 0000000020000380 RDI: 0000000000000004
RBP: 00000000004e4042 R08: 0000000000000000 R09: 0000000000000027
R10: 000000000020c49a R11: 0000000000000246 R12: 000000000078c0a0
R13: 0000000000000000 R14: 000000000078c0a0 R15: 00007ffe75b47830
On 9/3/21 12:54 AM, Hao Sun wrote:
> Hello,
>
> When using Healer to fuzz the latest Linux kernel, the following crash
> was triggered.
>
> HEAD commit: 9e9fb7655ed58 Merge tag 'net-next-5.15'
> git tree: upstream
> console output:
> https://drive.google.com/file/d/1AXEQDnn7SPgFAMjqbL03_24-X_8YHoAq/view?usp=sharing
> kernel config: https://drive.google.com/file/d/1zgxbwaYkrM26KEmJ-5sUZX57gfXtRrwA/view?usp=sharing
> C reproducer: https://drive.google.com/file/d/1qa4FVNoO-EsJGuDMtGlTxtHW0li-vMSP/view?usp=sharing
> Syzlang reproducer:
> https://drive.google.com/file/d/1pL6atNID5ZGzH4GceqyBCOC5IjFfiaVN/view?usp=sharing
>
> If you fix this issue, please add the following tag to the commit:
> Reported-by: Hao Sun <[email protected]>
This is probably a dup, causes skb_expand_head() changes,
CC Vasily Averin <[email protected]> is currently working on a fix.
>
> ------------[ cut here ]------------
> WARNING: CPU: 1 PID: 10229 at net/core/stream.c:207
> sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
> Modules linked in:
> CPU: 1 PID: 10229 Comm: syz-executor Not tainted 5.14.0+ #12
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
> rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
> RIP: 0010:sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
> Code: 41 5c e9 21 3b ce fd e8 1c 3b ce fd 89 de 48 89 ef e8 62 68 fe
> ff e8 0d 3b ce fd 8b 95 68 02 00 00 85 d2 74 ca e8 fe 3a ce fd <0f> 0b
> e8 f7 3a ce fd 8b 85 20 02 00 00 85 c0 74 c3 e8 e8 3a ce fd
> RSP: 0018:ffffc900080b7c98 EFLAGS: 00010202
> RAX: 000000000002a750 RBX: 0000000000000180 RCX: ffffc90002c0d000
> RDX: 0000000000040000 RSI: ffffffff836939f2 RDI: ffff8881031f0b40
> RBP: ffff8881031f0b40 R08: 0000000000000000 R09: 0000000000000000
> R10: 000000000000000d R11: 000000000004f380 R12: ffff8881031f0c90
> R13: ffff8881031f0bc0 R14: ffff8881031f0cf0 R15: 0000000000000000
> FS: 00007f311adcb700(0000) GS:ffff88813dc00000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000000732190 CR3: 000000010ab01000 CR4: 0000000000752ee0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> PKRU: 55555554
> Call Trace:
> inet_csk_destroy_sock+0x6f/0x1a0 net/ipv4/inet_connection_sock.c:1012
> __tcp_close+0x512/0x610 net/ipv4/tcp.c:2869
> tcp_close+0x29/0xa0 net/ipv4/tcp.c:2881
> inet_release+0x58/0xb0 net/ipv4/af_inet.c:431
> __sock_release+0x47/0xf0 net/socket.c:649
> sock_close+0x18/0x20 net/socket.c:1314
> __fput+0xdf/0x380 fs/file_table.c:280
> task_work_run+0x86/0xd0 kernel/task_work.c:164
> get_signal+0xde6/0x10b0 kernel/signal.c:2596
> arch_do_signal_or_restart+0xa9/0x860 arch/x86/kernel/signal.c:865
> handle_signal_work kernel/entry/common.c:148 [inline]
> exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
> exit_to_user_mode_prepare+0xf2/0x280 kernel/entry/common.c:209
> __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
> syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
> do_syscall_64+0x40/0xb0 arch/x86/entry/common.c:86
> entry_SYSCALL_64_after_hwframe+0x44/0xae
> RIP: 0033:0x46a9a9
> Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
> RSP: 002b:00007f311adcac58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
> RAX: 0000000000069340 RBX: 000000000078c0a0 RCX: 000000000046a9a9
> RDX: 0000000000088012 RSI: 0000000020000380 RDI: 0000000000000004
> RBP: 00000000004e4042 R08: 0000000000000000 R09: 0000000000000027
> R10: 000000000020c49a R11: 0000000000000246 R12: 000000000078c0a0
> R13: 0000000000000000 R14: 000000000078c0a0 R15: 00007ffe75b47830
>
On 9/3/21 7:56 PM, Eric Dumazet wrote:
> On 9/3/21 12:54 AM, Hao Sun wrote:
>> Hello,
>>
>> When using Healer to fuzz the latest Linux kernel, the following crash
>> was triggered.
>>
>> HEAD commit: 9e9fb7655ed58 Merge tag 'net-next-5.15'
>> git tree: upstream
>> console output:
>> https://drive.google.com/file/d/1AXEQDnn7SPgFAMjqbL03_24-X_8YHoAq/view?usp=sharing
>> kernel config: https://drive.google.com/file/d/1zgxbwaYkrM26KEmJ-5sUZX57gfXtRrwA/view?usp=sharing
>> C reproducer: https://drive.google.com/file/d/1qa4FVNoO-EsJGuDMtGlTxtHW0li-vMSP/view?usp=sharing
>> Syzlang reproducer:
>> https://drive.google.com/file/d/1pL6atNID5ZGzH4GceqyBCOC5IjFfiaVN/view?usp=sharing
>> If you fix this issue, please add the following tag to the commit:
>> Reported-by: Hao Sun <[email protected]>
>
> This is probably a dup, causes skb_expand_head() changes,
> CC Vasily Averin <[email protected]> is currently working on a fix.
Thank you for this report and especially for C reproducer!
Vasily Averin
>> ------------[ cut here ]------------
>> WARNING: CPU: 1 PID: 10229 at net/core/stream.c:207
>> sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
>> Modules linked in:
>> CPU: 1 PID: 10229 Comm: syz-executor Not tainted 5.14.0+ #12
>> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
>> rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
>> RIP: 0010:sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
>> Code: 41 5c e9 21 3b ce fd e8 1c 3b ce fd 89 de 48 89 ef e8 62 68 fe
>> ff e8 0d 3b ce fd 8b 95 68 02 00 00 85 d2 74 ca e8 fe 3a ce fd <0f> 0b
>> e8 f7 3a ce fd 8b 85 20 02 00 00 85 c0 74 c3 e8 e8 3a ce fd
>> RSP: 0018:ffffc900080b7c98 EFLAGS: 00010202
>> RAX: 000000000002a750 RBX: 0000000000000180 RCX: ffffc90002c0d000
>> RDX: 0000000000040000 RSI: ffffffff836939f2 RDI: ffff8881031f0b40
>> RBP: ffff8881031f0b40 R08: 0000000000000000 R09: 0000000000000000
>> R10: 000000000000000d R11: 000000000004f380 R12: ffff8881031f0c90
>> R13: ffff8881031f0bc0 R14: ffff8881031f0cf0 R15: 0000000000000000
>> FS: 00007f311adcb700(0000) GS:ffff88813dc00000(0000) knlGS:0000000000000000
>> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> CR2: 0000000000732190 CR3: 000000010ab01000 CR4: 0000000000752ee0
>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>> PKRU: 55555554
>> Call Trace:
>> inet_csk_destroy_sock+0x6f/0x1a0 net/ipv4/inet_connection_sock.c:1012
>> __tcp_close+0x512/0x610 net/ipv4/tcp.c:2869
>> tcp_close+0x29/0xa0 net/ipv4/tcp.c:2881
>> inet_release+0x58/0xb0 net/ipv4/af_inet.c:431
>> __sock_release+0x47/0xf0 net/socket.c:649
>> sock_close+0x18/0x20 net/socket.c:1314
>> __fput+0xdf/0x380 fs/file_table.c:280
>> task_work_run+0x86/0xd0 kernel/task_work.c:164
>> get_signal+0xde6/0x10b0 kernel/signal.c:2596
>> arch_do_signal_or_restart+0xa9/0x860 arch/x86/kernel/signal.c:865
>> handle_signal_work kernel/entry/common.c:148 [inline]
>> exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
>> exit_to_user_mode_prepare+0xf2/0x280 kernel/entry/common.c:209
>> __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
>> syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
>> do_syscall_64+0x40/0xb0 arch/x86/entry/common.c:86
>> entry_SYSCALL_64_after_hwframe+0x44/0xae
>> RIP: 0033:0x46a9a9
>> Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
>> RSP: 002b:00007f311adcac58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
>> RAX: 0000000000069340 RBX: 000000000078c0a0 RCX: 000000000046a9a9
>> RDX: 0000000000088012 RSI: 0000000020000380 RDI: 0000000000000004
>> RBP: 00000000004e4042 R08: 0000000000000000 R09: 0000000000000027
>> R10: 000000000020c49a R11: 0000000000000246 R12: 000000000078c0a0
>> R13: 0000000000000000 R14: 000000000078c0a0 R15: 00007ffe75b47830
>>
On 9/3/21 9:10 PM, Vasily Averin wrote:
> On 9/3/21 7:56 PM, Eric Dumazet wrote:
>> On 9/3/21 12:54 AM, Hao Sun wrote:
>>> Hello,
>>>
>>> When using Healer to fuzz the latest Linux kernel, the following crash
>>> was triggered.
>>>
>>> HEAD commit: 9e9fb7655ed58 Merge tag 'net-next-5.15'
>>> git tree: upstream
>>> console output:
>>> https://drive.google.com/file/d/1AXEQDnn7SPgFAMjqbL03_24-X_8YHoAq/view?usp=sharing
>>> kernel config: https://drive.google.com/file/d/1zgxbwaYkrM26KEmJ-5sUZX57gfXtRrwA/view?usp=sharing
>>> C reproducer: https://drive.google.com/file/d/1qa4FVNoO-EsJGuDMtGlTxtHW0li-vMSP/view?usp=sharing
>>> Syzlang reproducer:
>>> https://drive.google.com/file/d/1pL6atNID5ZGzH4GceqyBCOC5IjFfiaVN/view?usp=sharing
>
>>> If you fix this issue, please add the following tag to the commit:
>>> Reported-by: Hao Sun <[email protected]>
>>
>> This is probably a dup, causes skb_expand_head() changes,
>> CC Vasily Averin <[email protected]> is currently working on a fix.
>
> Thank you for this report and especially for C reproducer!
Eric,
this problem is not related to my patches.
I've reproduced the problem locally on orignal kernel with original config,
then I've applied last version of my patch -- but it did not help, issue was reproduced again,
then I've reverted all my patches, see lest below -- and reproduced the problem once again
Thank you,
Vasily Averin
b8a0bb68ac30 (HEAD -> net-next-5.15) Revert "ipv6: allocate enough headroom in ip6_finish_output2()"
1bc2de674a1b Revert "ipv6: ip6_finish_output2: set sk into newly allocated nskb"
780e2f7d9b93 Revert "skbuff: introduce skb_expand_head()"
782eaeed9de7 Revert "ipv6: use skb_expand_head in ip6_finish_output2"
639e9842fc1f Revert "ipv6: use skb_expand_head in ip6_xmit"
3b16ee164bcd Revert "ipv4: use skb_expand_head in ip_finish_output2"
ab48caf0e632 Revert "vrf: use skb_expand_head in vrf_finish_output"
4da67a72ceef Revert "ax25: use skb_expand_head"
9b113a8a62f0 Revert "bpf: use skb_expand_head in bpf_out_neigh_v4/6"
fc4ab503ce8f Revert "vrf: fix NULL dereference in vrf_finish_output()"
>>> ------------[ cut here ]------------
>>> WARNING: CPU: 1 PID: 10229 at net/core/stream.c:207
>>> sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
>>> Modules linked in:
>>> CPU: 1 PID: 10229 Comm: syz-executor Not tainted 5.14.0+ #12
>>> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
>>> rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
>>> RIP: 0010:sk_stream_kill_queues+0x162/0x190 net/core/stream.c:207
>>> Code: 41 5c e9 21 3b ce fd e8 1c 3b ce fd 89 de 48 89 ef e8 62 68 fe
>>> ff e8 0d 3b ce fd 8b 95 68 02 00 00 85 d2 74 ca e8 fe 3a ce fd <0f> 0b
>>> e8 f7 3a ce fd 8b 85 20 02 00 00 85 c0 74 c3 e8 e8 3a ce fd
>>> RSP: 0018:ffffc900080b7c98 EFLAGS: 00010202
>>> RAX: 000000000002a750 RBX: 0000000000000180 RCX: ffffc90002c0d000
>>> RDX: 0000000000040000 RSI: ffffffff836939f2 RDI: ffff8881031f0b40
>>> RBP: ffff8881031f0b40 R08: 0000000000000000 R09: 0000000000000000
>>> R10: 000000000000000d R11: 000000000004f380 R12: ffff8881031f0c90
>>> R13: ffff8881031f0bc0 R14: ffff8881031f0cf0 R15: 0000000000000000
>>> FS: 00007f311adcb700(0000) GS:ffff88813dc00000(0000) knlGS:0000000000000000
>>> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> CR2: 0000000000732190 CR3: 000000010ab01000 CR4: 0000000000752ee0
>>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>>> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>>> PKRU: 55555554
>>> Call Trace:
>>> inet_csk_destroy_sock+0x6f/0x1a0 net/ipv4/inet_connection_sock.c:1012
>>> __tcp_close+0x512/0x610 net/ipv4/tcp.c:2869
>>> tcp_close+0x29/0xa0 net/ipv4/tcp.c:2881
>>> inet_release+0x58/0xb0 net/ipv4/af_inet.c:431
>>> __sock_release+0x47/0xf0 net/socket.c:649
>>> sock_close+0x18/0x20 net/socket.c:1314
>>> __fput+0xdf/0x380 fs/file_table.c:280
>>> task_work_run+0x86/0xd0 kernel/task_work.c:164
>>> get_signal+0xde6/0x10b0 kernel/signal.c:2596
>>> arch_do_signal_or_restart+0xa9/0x860 arch/x86/kernel/signal.c:865
>>> handle_signal_work kernel/entry/common.c:148 [inline]
>>> exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
>>> exit_to_user_mode_prepare+0xf2/0x280 kernel/entry/common.c:209
>>> __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
>>> syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
>>> do_syscall_64+0x40/0xb0 arch/x86/entry/common.c:86
>>> entry_SYSCALL_64_after_hwframe+0x44/0xae
>>> RIP: 0033:0x46a9a9
>>> Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
>>> RSP: 002b:00007f311adcac58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
>>> RAX: 0000000000069340 RBX: 000000000078c0a0 RCX: 000000000046a9a9
>>> RDX: 0000000000088012 RSI: 0000000020000380 RDI: 0000000000000004
>>> RBP: 00000000004e4042 R08: 0000000000000000 R09: 0000000000000027
>>> R10: 000000000020c49a R11: 0000000000000246 R12: 000000000078c0a0
>>> R13: 0000000000000000 R14: 000000000078c0a0 R15: 00007ffe75b47830
>>>
>
On 9/4/21 7:48 AM, Vasily Averin wrote:
> Eric,
> this problem is not related to my patches.
> I've reproduced the problem locally on orignal kernel with original config,
> then I've applied last version of my patch -- but it did not help, issue was reproduced again,
> then I've reverted all my patches, see lest below -- and reproduced the problem once again
>
> Thank you,
> Vasily Averin
>
> b8a0bb68ac30 (HEAD -> net-next-5.15) Revert "ipv6: allocate enough headroom in ip6_finish_output2()"
> 1bc2de674a1b Revert "ipv6: ip6_finish_output2: set sk into newly allocated nskb"
> 780e2f7d9b93 Revert "skbuff: introduce skb_expand_head()"
> 782eaeed9de7 Revert "ipv6: use skb_expand_head in ip6_finish_output2"
> 639e9842fc1f Revert "ipv6: use skb_expand_head in ip6_xmit"
> 3b16ee164bcd Revert "ipv4: use skb_expand_head in ip_finish_output2"
> ab48caf0e632 Revert "vrf: use skb_expand_head in vrf_finish_output"
> 4da67a72ceef Revert "ax25: use skb_expand_head"
> 9b113a8a62f0 Revert "bpf: use skb_expand_head in bpf_out_neigh_v4/6"
> fc4ab503ce8f Revert "vrf: fix NULL dereference in vrf_finish_output()"
>
OK, thanks for checking.
The repro on my host does not trigger the issue, I can not really investigate/bisect.
On 9/4/21 8:14 PM, Eric Dumazet wrote:
>
>
> On 9/4/21 7:48 AM, Vasily Averin wrote:
>
>> Eric,
>> this problem is not related to my patches.
>> I've reproduced the problem locally on orignal kernel with original config,
>> then I've applied last version of my patch -- but it did not help, issue was reproduced again,
>> then I've reverted all my patches, see lest below -- and reproduced the problem once again
>>
>> Thank you,
>> Vasily Averin
>>
>> b8a0bb68ac30 (HEAD -> net-next-5.15) Revert "ipv6: allocate enough headroom in ip6_finish_output2()"
>> 1bc2de674a1b Revert "ipv6: ip6_finish_output2: set sk into newly allocated nskb"
>> 780e2f7d9b93 Revert "skbuff: introduce skb_expand_head()"
>> 782eaeed9de7 Revert "ipv6: use skb_expand_head in ip6_finish_output2"
>> 639e9842fc1f Revert "ipv6: use skb_expand_head in ip6_xmit"
>> 3b16ee164bcd Revert "ipv4: use skb_expand_head in ip_finish_output2"
>> ab48caf0e632 Revert "vrf: use skb_expand_head in vrf_finish_output"
>> 4da67a72ceef Revert "ax25: use skb_expand_head"
>> 9b113a8a62f0 Revert "bpf: use skb_expand_head in bpf_out_neigh_v4/6"
>> fc4ab503ce8f Revert "vrf: fix NULL dereference in vrf_finish_output()"
>>
>
> OK, thanks for checking.
>
> The repro on my host does not trigger the issue, I can not really investigate/bisect.
I"ve recompiled kernel with original config,
It was booted very slowly, ~10 minutes,
then reproducer worked a quite long time,
node was crashed in 3000-4000 seconds uptime.
Thank you,
Vasily Averin