On Mon, May 22, 2023 at 09:05:25AM -0700, Darrick J. Wong wrote: > On Mon, May 22, 2023 at 01:39:27PM +0700, Bagas Sanjaya wrote: > > On Mon, May 22, 2023 at 10:07:28AM +0800, Pengfei Xu wrote: > > > Hi Darrick, > > > > > > Greeting! > > > There is BUG: unable to handle kernel NULL pointer dereference in > > > xfs_extent_free_diff_items in v6.4-rc3: > > > > > > Above issue could be reproduced in v6.4-rc3 and v6.4-rc2 kernel in guest. > > > > > > Bisected this issue between v6.4-rc2 and v5.11, found the problem commit is: > > > " > > > f6b384631e1e xfs: give xfs_extfree_intent its own perag reference > > > " > > > > > > report0, repro.stat and so on detailed info is link: https://github.com/xupengfe/syzkaller_logs/tree/main/230521_043336_xfs_extent_free_diff_items > > > Syzkaller reproduced code: https://github.com/xupengfe/syzkaller_logs/blob/main/230521_043336_xfs_extent_free_diff_items/repro.c > > > Syzkaller reproduced prog: https://github.com/xupengfe/syzkaller_logs/blob/main/230521_043336_xfs_extent_free_diff_items/repro.prog > > > Kconfig: https://github.com/xupengfe/syzkaller_logs/blob/main/230521_043336_xfs_extent_free_diff_items/kconfig_origin > > > Bisect info: https://github.com/xupengfe/syzkaller_logs/blob/main/230521_043336_xfs_extent_free_diff_items/bisect_info.log > > > Issue dmesg: https://github.com/xupengfe/syzkaller_logs/blob/main/230521_043336_xfs_extent_free_diff_items/v6.4-rc3_reproduce_dmesg.log > > > > > > v6.4-rc3 reproduced info: > > Diagnosis and patches welcomed. > > Or are we doing the usual syzbot bullshit where you all assume that I'm > going to do all the fucking work for you? > It looks like Pengfei already took the time to manually bisect this issue to a very recent commit authored by you. Is that not helpful? (Apologies if I didn't include enough profanities for this email to be suitable for linux-xfs@.) - Eric
