* [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data
@ 2025-01-14 14:48 syzbot
2025-01-14 14:56 ` Stefano Garzarella
2025-02-11 1:30 ` syzbot
0 siblings, 2 replies; 5+ messages in thread
From: syzbot @ 2025-01-14 14:48 UTC (permalink / raw)
To: bobby.eshleman, davem, edumazet, horms, kuba, linux-kernel,
netdev, pabeni, sgarzare, syzkaller-bugs, virtualization,
virtualization
Hello,
syzbot found the following issue on:
HEAD commit: 25cc469d6d34 net: phy: micrel: use helper phy_disable_eee
git tree: net-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=15faeef8580000
kernel config: https://syzkaller.appspot.com/x/.config?x=d50f1d63eac02308
dashboard link: https://syzkaller.appspot.com/bug?extid=71613b464c8ef17ab718
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e374b0580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1778d3c4580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1a1fa1071012/disk-25cc469d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3fcf28733f5e/vmlinux-25cc469d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ed476a847c4e/bzImage-25cc469d.xz
The issue was bisected to:
commit 71dc9ec9ac7d3eee785cdc986c3daeb821381e20
Author: Bobby Eshleman <bobby.eshleman@bytedance.com>
Date: Fri Jan 13 22:21:37 2023 +0000
virtio/vsock: replace virtio_vsock_pkt with sk_buff
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=102b1ef8580000
final oops: https://syzkaller.appspot.com/x/report.txt?x=122b1ef8580000
console output: https://syzkaller.appspot.com/x/log.txt?x=142b1ef8580000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+71613b464c8ef17ab718@syzkaller.appspotmail.com
Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.13.0-rc6-syzkaller-00898-g25cc469d6d34 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: vsock-loopback vsock_loopback_work
RIP: 0010:vsock_stream_has_data+0x46/0x70 net/vmw_vsock/af_vsock.c:873
Code: 8d 9e 50 05 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 82 5c f6 48 8b 1b 48 83 c3 60 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 3b 82 5c f6 4c 8b 1b 4c 89 f7 5b
RSP: 0018:ffffc900000d7748 EFLAGS: 00010206
RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff88801cac5a00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888077bf08c0
RBP: ffff888077bf08c0 R08: ffff888077bf0927 R09: 1ffff1100ef7e124
R10: dffffc0000000000 R11: ffffed100ef7e125 R12: dffffc0000000000
R13: ffffffff8ffeb820 R14: ffff888077bf08c0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffca709b000 CR3: 000000007b69c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
virtio_transport_do_close+0x64/0x3d0 net/vmw_vsock/virtio_transport_common.c:1214
virtio_transport_recv_disconnecting net/vmw_vsock/virtio_transport_common.c:1452 [inline]
virtio_transport_recv_pkt+0x1755/0x2b10 net/vmw_vsock/virtio_transport_common.c:1661
vsock_loopback_work+0x3e9/0x530 net/vmw_vsock/vsock_loopback.c:133
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vsock_stream_has_data+0x46/0x70 net/vmw_vsock/af_vsock.c:873
Code: 8d 9e 50 05 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 82 5c f6 48 8b 1b 48 83 c3 60 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 3b 82 5c f6 4c 8b 1b 4c 89 f7 5b
RSP: 0018:ffffc900000d7748 EFLAGS: 00010206
RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff88801cac5a00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888077bf08c0
RBP: ffff888077bf08c0 R08: ffff888077bf0927 R09: 1ffff1100ef7e124
R10: dffffc0000000000 R11: ffffed100ef7e125 R12: dffffc0000000000
R13: ffffffff8ffeb820 R14: ffff888077bf08c0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffca709b000 CR3: 00000000334b6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 8d 9e 50 05 00 00 lea 0x550(%rsi),%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 58 82 5c f6 call 0xf65c8274
1c: 48 8b 1b mov (%rbx),%rbx
1f: 48 83 c3 60 add $0x60,%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 3b 82 5c f6 call 0xf65c8274
39: 4c 8b 1b mov (%rbx),%r11
3c: 4c 89 f7 mov %r14,%rdi
3f: 5b pop %rbx
---
This report 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@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data
2025-01-14 14:48 [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data syzbot
@ 2025-01-14 14:56 ` Stefano Garzarella
2025-01-14 15:40 ` syzbot
2025-02-11 1:30 ` syzbot
1 sibling, 1 reply; 5+ messages in thread
From: Stefano Garzarella @ 2025-01-14 14:56 UTC (permalink / raw)
To: syzbot
Cc: bobby.eshleman, davem, edumazet, horms, kuba, linux-kernel,
netdev, pabeni, syzkaller-bugs, virtualization, virtualization
On Tue, Jan 14, 2025 at 06:48:23AM -0800, syzbot wrote:
>Hello,
>
>syzbot found the following issue on:
>
>HEAD commit: 25cc469d6d34 net: phy: micrel: use helper phy_disable_eee
>git tree: net-next
>console+strace: https://syzkaller.appspot.com/x/log.txt?x=15faeef8580000
>kernel config: https://syzkaller.appspot.com/x/.config?x=d50f1d63eac02308
>dashboard link: https://syzkaller.appspot.com/bug?extid=71613b464c8ef17ab718
>compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
>syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e374b0580000
>C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1778d3c4580000
>
>Downloadable assets:
>disk image: https://storage.googleapis.com/syzbot-assets/1a1fa1071012/disk-25cc469d.raw.xz
>vmlinux: https://storage.googleapis.com/syzbot-assets/3fcf28733f5e/vmlinux-25cc469d.xz
>kernel image: https://storage.googleapis.com/syzbot-assets/ed476a847c4e/bzImage-25cc469d.xz
>
>The issue was bisected to:
>
>commit 71dc9ec9ac7d3eee785cdc986c3daeb821381e20
>Author: Bobby Eshleman <bobby.eshleman@bytedance.com>
>Date: Fri Jan 13 22:21:37 2023 +0000
>
> virtio/vsock: replace virtio_vsock_pkt with sk_buff
>
>bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=102b1ef8580000
>final oops: https://syzkaller.appspot.com/x/report.txt?x=122b1ef8580000
>console output: https://syzkaller.appspot.com/x/log.txt?x=142b1ef8580000
>
>IMPORTANT: if you fix the issue, please add the following tag to the commit:
>Reported-by: syzbot+71613b464c8ef17ab718@syzkaller.appspotmail.com
>Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
>
>Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN PTI
>KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
>CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.13.0-rc6-syzkaller-00898-g25cc469d6d34 #0
>Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
>Workqueue: vsock-loopback vsock_loopback_work
>RIP: 0010:vsock_stream_has_data+0x46/0x70 net/vmw_vsock/af_vsock.c:873
This seems really related to the same issues we tried to fix with the
series [1] we just merged in the net tree [2], so let's try to test if
that series fixes also this report:
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 665bcfc982deef247016a9ff679cdf45ae37162c
[1] https://lore.kernel.org/all/20250110083511.30419-1-sgarzare@redhat.com/
[2] https://lore.kernel.org/all/173685543253.4153435.8360593210112873590.git-patchwork-notify@kernel.org/
>Code: 8d 9e 50 05 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 82 5c f6 48 8b 1b 48 83 c3 60 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 3b 82 5c f6 4c 8b 1b 4c 89 f7 5b
>RSP: 0018:ffffc900000d7748 EFLAGS: 00010206
>RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff88801cac5a00
>RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888077bf08c0
>RBP: ffff888077bf08c0 R08: ffff888077bf0927 R09: 1ffff1100ef7e124
>R10: dffffc0000000000 R11: ffffed100ef7e125 R12: dffffc0000000000
>R13: ffffffff8ffeb820 R14: ffff888077bf08c0 R15: dffffc0000000000
>FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>CR2: 00007ffca709b000 CR3: 000000007b69c000 CR4: 00000000003526f0
>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>Call Trace:
> <TASK>
> virtio_transport_do_close+0x64/0x3d0 net/vmw_vsock/virtio_transport_common.c:1214
> virtio_transport_recv_disconnecting net/vmw_vsock/virtio_transport_common.c:1452 [inline]
> virtio_transport_recv_pkt+0x1755/0x2b10 net/vmw_vsock/virtio_transport_common.c:1661
> vsock_loopback_work+0x3e9/0x530 net/vmw_vsock/vsock_loopback.c:133
> process_one_work kernel/workqueue.c:3229 [inline]
> process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
> worker_thread+0x870/0xd30 kernel/workqueue.c:3391
> kthread+0x2f0/0x390 kernel/kthread.c:389
> ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
> ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
> </TASK>
>Modules linked in:
>---[ end trace 0000000000000000 ]---
>RIP: 0010:vsock_stream_has_data+0x46/0x70 net/vmw_vsock/af_vsock.c:873
>Code: 8d 9e 50 05 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 58 82 5c f6 48 8b 1b 48 83 c3 60 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 3b 82 5c f6 4c 8b 1b 4c 89 f7 5b
>RSP: 0018:ffffc900000d7748 EFLAGS: 00010206
>RAX: 000000000000000c RBX: 0000000000000060 RCX: ffff88801cac5a00
>RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888077bf08c0
>RBP: ffff888077bf08c0 R08: ffff888077bf0927 R09: 1ffff1100ef7e124
>R10: dffffc0000000000 R11: ffffed100ef7e125 R12: dffffc0000000000
>R13: ffffffff8ffeb820 R14: ffff888077bf08c0 R15: dffffc0000000000
>FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>CR2: 00007ffca709b000 CR3: 00000000334b6000 CR4: 00000000003526f0
>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>----------------
>Code disassembly (best guess):
> 0: 8d 9e 50 05 00 00 lea 0x550(%rsi),%ebx
> 6: 48 89 d8 mov %rbx,%rax
> 9: 48 c1 e8 03 shr $0x3,%rax
> d: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
> 12: 74 08 je 0x1c
> 14: 48 89 df mov %rbx,%rdi
> 17: e8 58 82 5c f6 call 0xf65c8274
> 1c: 48 8b 1b mov (%rbx),%rbx
> 1f: 48 83 c3 60 add $0x60,%rbx
> 23: 48 89 d8 mov %rbx,%rax
> 26: 48 c1 e8 03 shr $0x3,%rax
>* 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction
> 2f: 74 08 je 0x39
> 31: 48 89 df mov %rbx,%rdi
> 34: e8 3b 82 5c f6 call 0xf65c8274
> 39: 4c 8b 1b mov (%rbx),%r11
> 3c: 4c 89 f7 mov %r14,%rdi
> 3f: 5b pop %rbx
>
>
>---
>This report 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@googlegroups.com.
>
>syzbot will keep track of this issue. See:
>https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
>For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
>If the report is already addressed, let syzbot know by replying with:
>#syz fix: exact-commit-title
>
>If you want syzbot to run the reproducer, reply with:
>#syz test: git://repo/address.git branch-or-commit-hash
>If you attach or paste a git patch, syzbot will apply it before testing.
>
>If you want to overwrite report's subsystems, reply with:
>#syz set subsystems: new-subsystem
>(See the list of subsystem names on the web dashboard)
>
>If the report is a duplicate of another one, reply with:
>#syz dup: exact-subject-of-another-report
>
>If you want to undo deduplication, reply with:
>#syz undup
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data
2025-01-14 14:56 ` Stefano Garzarella
@ 2025-01-14 15:40 ` syzbot
0 siblings, 0 replies; 5+ messages in thread
From: syzbot @ 2025-01-14 15:40 UTC (permalink / raw)
To: bobby.eshleman, davem, edumazet, horms, kuba, linux-kernel,
netdev, pabeni, sgarzare, syzkaller-bugs, virtualization,
virtualization
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+71613b464c8ef17ab718@syzkaller.appspotmail.com
Tested-by: syzbot+71613b464c8ef17ab718@syzkaller.appspotmail.com
Tested on:
commit: 665bcfc9 Merge branch 'vsock-some-fixes-due-to-transpo..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git
console output: https://syzkaller.appspot.com/x/log.txt?x=14e95bc4580000
kernel config: https://syzkaller.appspot.com/x/.config?x=4ef22c4fce5135b4
dashboard link: https://syzkaller.appspot.com/bug?extid=71613b464c8ef17ab718
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data
2025-01-14 14:48 [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data syzbot
2025-01-14 14:56 ` Stefano Garzarella
@ 2025-02-11 1:30 ` syzbot
2025-02-11 8:13 ` Stefano Garzarella
1 sibling, 1 reply; 5+ messages in thread
From: syzbot @ 2025-02-11 1:30 UTC (permalink / raw)
To: bobby.eshleman, davem, edumazet, horms, kuba, leonardi,
linux-kernel, netdev, pabeni, sgarzare, syzkaller-bugs, v4bel,
virtualization, virtualization
syzbot suspects this issue was fixed by commit:
commit df137da9d6d166e87e40980e36eb8e0bc90483ef
Author: Stefano Garzarella <sgarzare@redhat.com>
Date: Fri Jan 10 08:35:09 2025 +0000
vsock/virtio: cancel close work in the destructor
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12bb31b0580000
start commit: 25cc469d6d34 net: phy: micrel: use helper phy_disable_eee
git tree: net-next
kernel config: https://syzkaller.appspot.com/x/.config?x=d50f1d63eac02308
dashboard link: https://syzkaller.appspot.com/bug?extid=71613b464c8ef17ab718
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=125a3218580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=147f11df980000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: vsock/virtio: cancel close work in the destructor
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data
2025-02-11 1:30 ` syzbot
@ 2025-02-11 8:13 ` Stefano Garzarella
0 siblings, 0 replies; 5+ messages in thread
From: Stefano Garzarella @ 2025-02-11 8:13 UTC (permalink / raw)
To: syzbot
Cc: bobby.eshleman, davem, edumazet, horms, kuba, leonardi,
linux-kernel, netdev, pabeni, syzkaller-bugs, v4bel,
virtualization, virtualization
#syz fix: vsock/virtio: cancel close work in the destructor
On Mon, Feb 10, 2025 at 05:30:04PM -0800, syzbot wrote:
>syzbot suspects this issue was fixed by commit:
>
>commit df137da9d6d166e87e40980e36eb8e0bc90483ef
>Author: Stefano Garzarella <sgarzare@redhat.com>
>Date: Fri Jan 10 08:35:09 2025 +0000
>
> vsock/virtio: cancel close work in the destructor
>
>bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12bb31b0580000
>start commit: 25cc469d6d34 net: phy: micrel: use helper phy_disable_eee
>git tree: net-next
>kernel config: https://syzkaller.appspot.com/x/.config?x=d50f1d63eac02308
>dashboard link: https://syzkaller.appspot.com/bug?extid=71613b464c8ef17ab718
>syz repro: https://syzkaller.appspot.com/x/repro.syz?x=125a3218580000
>C reproducer: https://syzkaller.appspot.com/x/repro.c?x=147f11df980000
>
>If the result looks correct, please mark the issue as fixed by replying with:
>
>#syz fix: vsock/virtio: cancel close work in the destructor
>
>For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2025-02-11 8:13 UTC | newest]
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2025-01-14 14:48 [syzbot] [net?] [virt?] general protection fault in vsock_stream_has_data syzbot
2025-01-14 14:56 ` Stefano Garzarella
2025-01-14 15:40 ` syzbot
2025-02-11 1:30 ` syzbot
2025-02-11 8:13 ` Stefano Garzarella
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