Yuri Lipnesh yuri.lipnesh@gmail.com wrote:
Linux system crashed
[ 0.000000] Linux version 5.4.0-54-generic (buildd@lcy01-amd64-008) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #60~18.04.1-Ubuntu SMP Fri Nov 6 17:25:16 UTC 2020 (Ubuntu 5.4.0-54.60~18.04.1-generic 5.4.65) [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-54-generic root=UUID=11885fd3-b840-4c9b-a500-532c73ac952a ro find_preseed=/preseed.cfg auto noprompt priority=critical locale=en_US quiet crashkernel=512M-:192M
… [ 156.321147] TCP: eth0: Driver has suspect GRO implementation, TCP performance may be compromised. [ 177.519159] general protection fault: 0000 [#1] SMP PTI [ 177.519737] CPU: 5 PID: 18484 Comm: worker-1 Kdump: loaded Not tainted 5.4.0-54-generic #60~18.04.1-Ubuntu [ 177.519742] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 02/27/2020 [ 177.519814] RIP: 0010:dev_hard_start_xmit+0x38/0x200 [ 177.519827] Code: 55 41 54 53 48 83 ec 20 48 85 ff 48 89 55 c8 48 89 4d b8 0f 84 c1 01 00 00 48 8d 86 90 00 00 00 48 89 fb 49 89 f4 48 89 45 c0 <4c> 8b 2b 48 c7 c0 d0 f2 04 8f 48 c7 03 00 00 00 00 48 8b 00 4d 85 [ 177.519829] RSP: 0018:ffffbc6d0609b5e8 EFLAGS: 00010286 [ 177.519833] RAX: 0000000000000000 RBX: dead000000000100 RCX: ffff95cf4bcfe800 [ 177.519835] RDX: 0000000000000000 RSI: ffff95cf4bcfe800 RDI: 0000000000000286 [ 177.519837] RBP: ffffbc6d0609b630 R08: ffff95cf6a190ec8 R09: ffff95cf4a2f7438 [ 177.519839] R10: ffffbc6d0609b6d0 R11: ffff95cf49d4d180 R12: ffff95cf51a5f000 [ 177.519841] R13: dead000000000100 R14: 000000000000009c R15: ffff95d02996b400 [ 177.519844] FS: 00007ff394cdfb20(0000) GS:ffff95d035d40000(0000) knlGS:0000000000000000 [ 177.519846] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 177.519848] CR2: 00007fb4a9c2d000 CR3: 00000001049fa004 CR4: 00000000003606e0 [ 177.519908] Call Trace: [ 177.519917] __dev_queue_xmit+0x719/0x920 [ 177.519930] ? ctnetlink_conntrack_event+0x8c/0x5e0 [nf_conntrack_netlink]
Can you reproduce this on 5.7 or later, or with following patches backported to 5.4.y?
dd3cc111f2e3220ddc9c4ab17f13dc97759b5163 119e52e664c57d5f7c0174dc2b3a296b1e40591d af370ab36fcd19f04e3408c402608e7e56e6f188 28f715b9e6dd7cbf07c2aea913fea7c87a56a3b5
The series fixed nfqueue reference counting.