Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in copy_from_kernel_nofault

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To: Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
Subject: Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in copy_from_kernel_nofault
From: "Guilherme G. Piccoli" <gpiccoli@xxxxxxxxxx>
Date: Sun, 25 Feb 2024 16:03:44 -0300
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, John Fastabend <john.fastabend@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, bpf <bpf@xxxxxxxxxxxxxxx>, "netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, "dave.hansen@xxxxxxxxxxxxxxx" <dave.hansen@xxxxxxxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, linux-mm <linux-mm@xxxxxxxxx>, "luto@xxxxxxxxxx" <luto@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>
In-reply-to: <CAADnVQKYu5RXGwq3rCJfzGq5AA-msdgBu4gA0tY0ASGXnXu0Hg@mail.gmail.com>
References: <87r0jwquhv.ffs@tglx> <c4c422ac-d017-9944-7d03-76ad416b19a4@igalia.com> <CAADnVQ+9vTBj9GgxotLF0_oV7cNFRebmcq_DNUm+cRJHQXCz1Q@mail.gmail.com> <85cdc364-e19f-625a-16e4-4efc6451fc7d@igalia.com> <CAADnVQKYu5RXGwq3rCJfzGq5AA-msdgBu4gA0tY0ASGXnXu0Hg@mail.gmail.com>
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On 22/02/2024 22:11, Alexei Starovoitov wrote:
> [...]
> 
> Correct.
> Please double check with your two syzbot tests.

Thanks for confirming!

Tested the fixes both for 5.15.y and 6.1.y - working fine =)
Cheers,


Guilherme

References:
- Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in copy_from_kernel_nofault
  - From: Thomas Gleixner
- Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in copy_from_kernel_nofault
  - From: Guilherme G. Piccoli
- Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in copy_from_kernel_nofault
  - From: Alexei Starovoitov
- Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in copy_from_kernel_nofault
  - From: Guilherme G. Piccoli
- Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in copy_from_kernel_nofault
  - From: Alexei Starovoitov

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