Kernel 5.12 causes freezes

My system upgraded to kernet v. 5.12.5-300.fc34.x86_64 and apps (Software, Firefox, …) now won’t start. Also, the system failed to recover the first time I did a reload after upgrading to this 5.12 after 5.11 - I entered my p/w, and saw an infinite load. I cannot report this behavior, as they system says that there is not enough information.
I will use the latest 5.11 for now.
Sorry, if this post is an inadvertent duplicate (not seeing anything similar, anyway)…

After booting with kernel 5.11, do you find any error about the previous boot with kernel 5.12 in journal ?

The backtrace does not contain enough meaningful function frames to be reported. It is annoying but it does not necessarily signalize a problem with your computer. ABRT will not allow you to create a report in a bug tracking system but you can contact kernel maintainers via e-mail.

Reason: kernel BUG at block/bio.c:52!

kernel BUG at block/bio.c:52!
invalid opcode: 0000 [#1] SMP NOPTI
CPU: 7 PID: 2730 Comm: PK-Backend Tainted: G OE 5.12.5-300.fc34.x86_64 #1
Hardware name: Dell Inc. Inspiron 7786/, BIOS 1.6.0 07/19/2019
RIP: 0010:biovec_slab.part.0+0x5/0x10
Code: 00 0f 0b eb d8 0f 0b 41 c7 44 24 08 ff ff ff ff eb cb 0f 0b eb 92 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 <0f> 0b 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 83 7f 40 00 75
RSP: 0018:ffffb2ea84d8f730 EFLAGS: 00010206
RAX: 000000000000017f RBX: ffffb2ea84d8f764 RCX: 00000000000000e8
RDX: 0000000000000800 RSI: ffffb2ea84d8f764 RDI: ffffa0bd4c860118
RBP: 0000000000000800 R08: ffffa0bd4c860118 R09: ffffa0bd496facd8
R10: ffffa0bd4cabd400 R11: 9000000000800000 R12: ffffa0bd4c860118
R13: 0000000000000800 R14: 0000000000000800 R15: ffffa0bd4c8600d0
FS: 00007f454f3d3640(0000) GS:ffffa0c0ad7c0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f45491f9000 CR3: 000000012b552001 CR4: 00000000003706e0
Call Trace:

ABRT is the auto reporting system.

You can goto to search for similar issues, or create a new bug.

As ABRT consider it is kernel related, I consider to save to file the bug against the kernel componet.

When contributors looking into your issue, they might ask you for more details, sometimes with instructions on how to collect them.

1 Like

I’ll take a look at Bugzilla. Thanks @sampsonf !

If anyone has the same problem - 5.12.8-300.fc34.x86_64 is working well on my system.