maple-tree@
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Subject: Re: [syzbot] [maple-tree?] BUG: unable to handle kernel paging
request in mas_walk
Reply-To:
In-Reply-To: <[email protected]>
* syzbot <[email protected]> [240604 11:18]:
> Hello,
>
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> BUG: unable to handle kernel paging request in corrupted
>
> Unable to handle kernel paging request at virtual address 007f8000826099b8
> Mem abort info:
> ESR = 0x0000000096000004
> EC = 0x25: DABT (current EL), IL = 32 bits
> SET = 0, FnV = 0
> EA = 0, S1PTW = 0
> FSC = 0x04: level 0 translation fault
> Data abort info:
> ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
> CM = 0, WnR = 0, TnD = 0, TagAccess = 0
> GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
> [007f8000826099b8] address between user and kernel address ranges
>
>
> Tested on:
>
> commit: 63ab6007 maple_tree: Check dead node in mas_walk() whe..
> git tree: git://git.infradead.org/users/jedix/linux-maple.git syz_20240603
> console output: https://syzkaller.appspot.com/x/log.txt?x=14842a16980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=bd6024aedb15e15c
> dashboard link: https://syzkaller.appspot.com/bug?extid=c67d06ab25a9bc4adf35
> compiler: aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> userspace arch: arm64
>
> Note: no patches were applied.
This trace does not look to be related to the first reported issue
either. It is difficult to test fixes when the issue is not reliably
reachable.