* [syzbot] general protection fault in vhost_iotlb_itree_first
@ 2022-02-19 9:18 syzbot
2022-02-21 13:12 ` Stefano Garzarella
0 siblings, 1 reply; 4+ messages in thread
From: syzbot @ 2022-02-19 9:18 UTC (permalink / raw)
To: jasowang, kvm, linux-kernel, mst, netdev, syzkaller-bugs, virtualization
Hello,
syzbot found the following issue on:
HEAD commit: 359303076163 tty: n_tty: do not look ahead for EOL charact..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16b34b54700000
kernel config: https://syzkaller.appspot.com/x/.config?x=da674567f7b6043d
dashboard link: https://syzkaller.appspot.com/bug?extid=bbb030fc51d6f3c5d067
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bbb030fc51d6f3c5d067@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 17981 Comm: vhost-17980 Not tainted 5.17.0-rc4-syzkaller-00052-g359303076163 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d46121901 CR3: 000000001d652000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
translate_desc+0x11e/0x3e0 drivers/vhost/vhost.c:2054
vhost_get_vq_desc+0x662/0x22c0 drivers/vhost/vhost.c:2300
vhost_vsock_handle_tx_kick+0x277/0xa20 drivers/vhost/vsock.c:522
vhost_worker+0x23d/0x3d0 drivers/vhost/vhost.c:372
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d449f6718 CR3: 000000001d652000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 41 57 add %al,0x57(%rcx)
3: 41 56 push %r14
5: 41 55 push %r13
7: 49 89 d5 mov %rdx,%r13
a: 41 54 push %r12
c: 55 push %rbp
d: 48 89 fd mov %rdi,%rbp
10: 53 push %rbx
11: 48 89 f3 mov %rsi,%rbx
14: e8 e8 eb a0 fa callq 0xfaa0ec01
19: 48 89 ea mov %rbp,%rdx
1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
23: fc ff df
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 e8 01 00 00 jne 0x21c
34: 4c 8b 65 00 mov 0x0(%rbp),%r12
38: 4d 85 e4 test %r12,%r12
3b: 0f .byte 0xf
3c: 84 .byte 0x84
3d: b3 01 mov $0x1,%bl
---
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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] general protection fault in vhost_iotlb_itree_first
2022-02-19 9:18 [syzbot] general protection fault in vhost_iotlb_itree_first syzbot
@ 2022-02-21 13:12 ` Stefano Garzarella
0 siblings, 0 replies; 4+ messages in thread
From: Stefano Garzarella @ 2022-02-21 13:12 UTC (permalink / raw)
To: syzbot
Cc: jasowang, kvm, linux-kernel, mst, netdev, syzkaller-bugs, virtualization
#syz test: https://github.com/stefano-garzarella/linux.git vsock-fix-stop
On Sat, Feb 19, 2022 at 01:18:24AM -0800, syzbot wrote:
>Hello,
>
>syzbot found the following issue on:
>
>HEAD commit: 359303076163 tty: n_tty: do not look ahead for EOL charact..
>git tree: upstream
>console output: https://syzkaller.appspot.com/x/log.txt?x=16b34b54700000
>kernel config: https://syzkaller.appspot.com/x/.config?x=da674567f7b6043d
>dashboard link: https://syzkaller.appspot.com/bug?extid=bbb030fc51d6f3c5d067
>compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
>
>Unfortunately, I don't have any reproducer for this issue yet.
>
>IMPORTANT: if you fix the issue, please add the following tag to the commit:
>Reported-by: syzbot+bbb030fc51d6f3c5d067@syzkaller.appspotmail.com
>
>general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
>KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
>CPU: 1 PID: 17981 Comm: vhost-17980 Not tainted 5.17.0-rc4-syzkaller-00052-g359303076163 #0
>Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
>RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
>RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
>Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
>RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
>RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
>RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
>RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
>R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
>R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
>FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>CR2: 00007f2d46121901 CR3: 000000001d652000 CR4: 00000000003506e0
>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>Call Trace:
> <TASK>
> translate_desc+0x11e/0x3e0 drivers/vhost/vhost.c:2054
> vhost_get_vq_desc+0x662/0x22c0 drivers/vhost/vhost.c:2300
> vhost_vsock_handle_tx_kick+0x277/0xa20 drivers/vhost/vsock.c:522
> vhost_worker+0x23d/0x3d0 drivers/vhost/vhost.c:372
> kthread+0x2e9/0x3a0 kernel/kthread.c:377
> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
> </TASK>
>Modules linked in:
>---[ end trace 0000000000000000 ]---
>RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
>RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
>Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
>RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
>RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
>RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
>RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
>R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
>R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
>FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>CR2: 00007f2d449f6718 CR3: 000000001d652000 CR4: 00000000003506e0
>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>----------------
>Code disassembly (best guess):
> 0: 00 41 57 add %al,0x57(%rcx)
> 3: 41 56 push %r14
> 5: 41 55 push %r13
> 7: 49 89 d5 mov %rdx,%r13
> a: 41 54 push %r12
> c: 55 push %rbp
> d: 48 89 fd mov %rdi,%rbp
> 10: 53 push %rbx
> 11: 48 89 f3 mov %rsi,%rbx
> 14: e8 e8 eb a0 fa callq 0xfaa0ec01
> 19: 48 89 ea mov %rbp,%rdx
> 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
> 23: fc ff df
> 26: 48 c1 ea 03 shr $0x3,%rdx
>* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
> 2e: 0f 85 e8 01 00 00 jne 0x21c
> 34: 4c 8b 65 00 mov 0x0(%rbp),%r12
> 38: 4d 85 e4 test %r12,%r12
> 3b: 0f .byte 0xf
> 3c: 84 .byte 0x84
> 3d: b3 01 mov $0x1,%bl
>
>
>---
>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.
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] general protection fault in vhost_iotlb_itree_first
@ 2022-02-21 13:12 ` Stefano Garzarella
0 siblings, 0 replies; 4+ messages in thread
From: Stefano Garzarella @ 2022-02-21 13:12 UTC (permalink / raw)
To: syzbot; +Cc: kvm, mst, netdev, syzkaller-bugs, linux-kernel, virtualization
#syz test: https://github.com/stefano-garzarella/linux.git vsock-fix-stop
On Sat, Feb 19, 2022 at 01:18:24AM -0800, syzbot wrote:
>Hello,
>
>syzbot found the following issue on:
>
>HEAD commit: 359303076163 tty: n_tty: do not look ahead for EOL charact..
>git tree: upstream
>console output: https://syzkaller.appspot.com/x/log.txt?x=16b34b54700000
>kernel config: https://syzkaller.appspot.com/x/.config?x=da674567f7b6043d
>dashboard link: https://syzkaller.appspot.com/bug?extid=bbb030fc51d6f3c5d067
>compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
>
>Unfortunately, I don't have any reproducer for this issue yet.
>
>IMPORTANT: if you fix the issue, please add the following tag to the commit:
>Reported-by: syzbot+bbb030fc51d6f3c5d067@syzkaller.appspotmail.com
>
>general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
>KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
>CPU: 1 PID: 17981 Comm: vhost-17980 Not tainted 5.17.0-rc4-syzkaller-00052-g359303076163 #0
>Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
>RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
>RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
>Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
>RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
>RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
>RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
>RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
>R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
>R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
>FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>CR2: 00007f2d46121901 CR3: 000000001d652000 CR4: 00000000003506e0
>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>Call Trace:
> <TASK>
> translate_desc+0x11e/0x3e0 drivers/vhost/vhost.c:2054
> vhost_get_vq_desc+0x662/0x22c0 drivers/vhost/vhost.c:2300
> vhost_vsock_handle_tx_kick+0x277/0xa20 drivers/vhost/vsock.c:522
> vhost_worker+0x23d/0x3d0 drivers/vhost/vhost.c:372
> kthread+0x2e9/0x3a0 kernel/kthread.c:377
> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
> </TASK>
>Modules linked in:
>---[ end trace 0000000000000000 ]---
>RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
>RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
>Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
>RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
>RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
>RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
>RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
>R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
>R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
>FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>CR2: 00007f2d449f6718 CR3: 000000001d652000 CR4: 00000000003506e0
>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>----------------
>Code disassembly (best guess):
> 0: 00 41 57 add %al,0x57(%rcx)
> 3: 41 56 push %r14
> 5: 41 55 push %r13
> 7: 49 89 d5 mov %rdx,%r13
> a: 41 54 push %r12
> c: 55 push %rbp
> d: 48 89 fd mov %rdi,%rbp
> 10: 53 push %rbx
> 11: 48 89 f3 mov %rsi,%rbx
> 14: e8 e8 eb a0 fa callq 0xfaa0ec01
> 19: 48 89 ea mov %rbp,%rdx
> 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
> 23: fc ff df
> 26: 48 c1 ea 03 shr $0x3,%rdx
>* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
> 2e: 0f 85 e8 01 00 00 jne 0x21c
> 34: 4c 8b 65 00 mov 0x0(%rbp),%r12
> 38: 4d 85 e4 test %r12,%r12
> 3b: 0f .byte 0xf
> 3c: 84 .byte 0x84
> 3d: b3 01 mov $0x1,%bl
>
>
>---
>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.
>
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] general protection fault in vhost_iotlb_itree_first
2022-02-21 13:12 ` Stefano Garzarella
(?)
@ 2022-02-21 13:12 ` syzbot
-1 siblings, 0 replies; 4+ messages in thread
From: syzbot @ 2022-02-21 13:12 UTC (permalink / raw)
To: Stefano Garzarella
Cc: jasowang, kvm, linux-kernel, mst, netdev, sgarzare,
syzkaller-bugs, virtualization
> #syz test: https://github.com/stefano-garzarella/linux.git vsock-fix-stop
This crash does not have a reproducer. I cannot test it.
>
> On Sat, Feb 19, 2022 at 01:18:24AM -0800, syzbot wrote:
>>Hello,
>>
>>syzbot found the following issue on:
>>
>>HEAD commit: 359303076163 tty: n_tty: do not look ahead for EOL charact..
>>git tree: upstream
>>console output: https://syzkaller.appspot.com/x/log.txt?x=16b34b54700000
>>kernel config: https://syzkaller.appspot.com/x/.config?x=da674567f7b6043d
>>dashboard link: https://syzkaller.appspot.com/bug?extid=bbb030fc51d6f3c5d067
>>compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
>>
>>Unfortunately, I don't have any reproducer for this issue yet.
>>
>>IMPORTANT: if you fix the issue, please add the following tag to the commit:
>>Reported-by: syzbot+bbb030fc51d6f3c5d067@syzkaller.appspotmail.com
>>
>>general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
>>KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
>>CPU: 1 PID: 17981 Comm: vhost-17980 Not tainted 5.17.0-rc4-syzkaller-00052-g359303076163 #0
>>Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
>>RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
>>RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
>>Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
>>RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
>>RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
>>RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
>>RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
>>R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
>>R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
>>FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
>>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>CR2: 00007f2d46121901 CR3: 000000001d652000 CR4: 00000000003506e0
>>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>>Call Trace:
>> <TASK>
>> translate_desc+0x11e/0x3e0 drivers/vhost/vhost.c:2054
>> vhost_get_vq_desc+0x662/0x22c0 drivers/vhost/vhost.c:2300
>> vhost_vsock_handle_tx_kick+0x277/0xa20 drivers/vhost/vsock.c:522
>> vhost_worker+0x23d/0x3d0 drivers/vhost/vhost.c:372
>> kthread+0x2e9/0x3a0 kernel/kthread.c:377
>> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
>> </TASK>
>>Modules linked in:
>>---[ end trace 0000000000000000 ]---
>>RIP: 0010:vhost_iotlb_itree_iter_first drivers/vhost/iotlb.c:19 [inline]
>>RIP: 0010:vhost_iotlb_itree_first+0x29/0x280 drivers/vhost/iotlb.c:169
>>Code: 00 41 57 41 56 41 55 49 89 d5 41 54 55 48 89 fd 53 48 89 f3 e8 e8 eb a0 fa 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 4c 8b 65 00 4d 85 e4 0f 84 b3 01 00
>>RSP: 0018:ffffc90004f57ac8 EFLAGS: 00010246
>>RAX: dffffc0000000000 RBX: 30303030320a0028 RCX: ffffc900103dc000
>>RDX: 0000000000000000 RSI: ffffffff86d72738 RDI: 0000000000000000
>>RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
>>R10: ffffffff86d62d88 R11: 0000000000000000 R12: ffff8880260e4d68
>>R13: 303030305f3a3057 R14: dffffc0000000000 R15: 0000000000000000
>>FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
>>CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>CR2: 00007f2d449f6718 CR3: 000000001d652000 CR4: 00000000003506e0
>>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>>DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>>----------------
>>Code disassembly (best guess):
>> 0: 00 41 57 add %al,0x57(%rcx)
>> 3: 41 56 push %r14
>> 5: 41 55 push %r13
>> 7: 49 89 d5 mov %rdx,%r13
>> a: 41 54 push %r12
>> c: 55 push %rbp
>> d: 48 89 fd mov %rdi,%rbp
>> 10: 53 push %rbx
>> 11: 48 89 f3 mov %rsi,%rbx
>> 14: e8 e8 eb a0 fa callq 0xfaa0ec01
>> 19: 48 89 ea mov %rbp,%rdx
>> 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
>> 23: fc ff df
>> 26: 48 c1 ea 03 shr $0x3,%rdx
>>* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
>> 2e: 0f 85 e8 01 00 00 jne 0x21c
>> 34: 4c 8b 65 00 mov 0x0(%rbp),%r12
>> 38: 4d 85 e4 test %r12,%r12
>> 3b: 0f .byte 0xf
>> 3c: 84 .byte 0x84
>> 3d: b3 01 mov $0x1,%bl
>>
>>
>>---
>>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.
>>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-02-21 13:13 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-02-19 9:18 [syzbot] general protection fault in vhost_iotlb_itree_first syzbot
2022-02-21 13:12 ` Stefano Garzarella
2022-02-21 13:12 ` Stefano Garzarella
2022-02-21 13:12 ` syzbot
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