syzbot


general protection fault in virtnet_poll

Status: auto-closed as invalid on 2021/06/21 23:01
Subsystems: net virt
[Documentation on labels]
First crash: 1104d, last: 1104d

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffde01ffffd44: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00000f00ffffea20-0x00000f00ffffea27]
CPU: 0 PID: 8466 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210422-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:virtnet_poll+0xb9/0x10b0 drivers/net/virtio_net.c:1512
Code: e8 03 80 3c 18 00 0f 85 37 0e 00 00 48 8b 44 24 10 48 8b 68 f8 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e9 0d 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0000:ffffc90000f1fc00 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000100
RDX: 000001e01ffffd44 RSI: ffffffff84c2dfda RDI: 00000f00ffffea20
RBP: 00000f00ffffea00 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff870b141e R11: 0000000000000000 R12: ffff88801cf30000
R13: 0000000000000001 R14: ffff88801cf30008 R15: ffffc90000f1fe08
FS:  000000c00002e490(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561dbcc88538 CR3: 000000001a679000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __napi_poll+0xaf/0x440 net/core/dev.c:6962
 napi_poll net/core/dev.c:7029 [inline]
 net_rx_action+0x801/0xb40 net/core/dev.c:7116
 __do_softirq+0x29b/0x9fe kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 common_interrupt+0x51/0xd0 arch/x86/kernel/irq.c:240
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x6324af
Code: c1 e8 09 23 82 20 08 00 00 48 39 c8 0f 83 ce 00 00 00 8b 1c 83 41 89 d9 83 e3 0f 48 39 df 73 0a 48 89 5c 24 38 e9 d2 fe ff ff <48> 85 db 75 76 44 89 46 18 48 89 7e 20 48 8b 46 10 48 89 04 24 e8
RSP: 002b:000000c0001f7a98 EFLAGS: 00000212
RAX: 000000000000c17b RBX: 0000000000000009 RCX: 0000000000000008
RDX: 000000c0003ca028 RSI: 000000c0003ca000 RDI: 0000000000000010
RBP: 000000c0001f7ae0 R08: 000000000000c17b R09: 0000000000000779
R10: 000000000000762c R11: 0000000000007245 R12: 0000000000007628
R13: 0000000000000100 R14: 0000000000000040 R15: 0000000000000004
Modules linked in:
---[ end trace 7a1e1193cf5b8af2 ]---
RIP: 0010:virtnet_poll+0xb9/0x10b0 drivers/net/virtio_net.c:1512
Code: e8 03 80 3c 18 00 0f 85 37 0e 00 00 48 8b 44 24 10 48 8b 68 f8 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e9 0d 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0000:ffffc90000f1fc00 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000100
RDX: 000001e01ffffd44 RSI: ffffffff84c2dfda RDI: 00000f00ffffea20
RBP: 00000f00ffffea00 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff870b141e R11: 0000000000000000 R12: ffff88801cf30000
R13: 0000000000000001 R14: ffff88801cf30008 R15: ffffc90000f1fe08
FS:  000000c00002e490(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561dbcc88538 CR3: 000000001a679000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/04/22 22:52 linux-next c457d9676496 590921a5 .config console log report info ci-upstream-linux-next-kasan-gce-root general protection fault in virtnet_poll
* Struck through repros no longer work on HEAD.