Re: [PATCH 7.2 000/242] 7.2.13-rc1 review

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Fri, Oct 23, 2026 at 03:44:07PM -0700, Florian Fainelli wrote:
> On 10/23/26 14:34, Salvatore Bonaccorso wrote:
> > Hi,
> > 
> > On Fri, Oct 23, 2026 at 10:44:26PM +0200, Pavel Machek wrote:
> > > Hi!
> > > 
> > > > This is the start of the stable review cycle for the 7.2.13 release.
> > > > There are 242 patches in this series, all will be posted as a response
> > > > to this one.  If anyone has any issues with these being applied, please
> > > > let me know.
> > > 
> > > Either something went very wrong with our testing, or this fails on
> > > all our targets. 6.18.59-rc1 does not seem to have those widespread
> > > failures.
> > > 
> > > https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/pipelines/2982452623
> > > 
> > > Example failure is:
> > > 
> > > I'll look some more to try to figure out what is going on there.
> > > 
> > > Best regards,
> > > 
> > > 								Pavel
> > > 
> > > 
> > > [    1.238864] Yama: becoming mindful.
> > > L426[    1.238864] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
> > > L427[    1.238864] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
> > > L428[    1.238864] VFS: Finished mounting rootfs on nullfs
> > > L431[    1.238864] BUG: kernel NULL pointer dereference, address: 000000000000002c
> > > L436[    1.238864] #PF: supervisor write access in kernel mode
> > > L437[    1.238864] #PF: error_code(0x0002) - not-present page
> > > L438[    1.238864] PGD 0 P4D 0
> > > L441[    1.238864] Oops: Oops: 0002 [#1] SMP PTI
> > > L446[    1.238864] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G S                  7.2.13-rc1+ #1 PREEMPT(lazy)
> > > L447[    1.238864] Tainted: [S]=CPU_OUT_OF_SPEC
> > > L448[    1.238864] Hardware name: SIEMENS AG SIMATIC IPC227E/A5E42630598, BIOS V20.01.11 03/15/2018
> > > L449[    1.238864] RIP: 0010:rest_init+0x33/0xd0
> > > L450[    1.238864] Code: 34 ff ba 00 02 00 00 31 f6 48 c7 c7 70 a2 e6 b2 e8 52 d3 28 ff 89 c3 e8 bb 2d 34 ff 89 df 48 c7 c6 80 db 85 b3 e8 9d d7 2b ff <81> 48 2c 00 00 00 04 65 8b 15 63 6e 45 01 48 89 c7 89 d0 c1 ea 06
> > > L451[    1.238864] RSP: 0000:ffffffffb3803ee0 EFLAGS: 00010246
> > > L452[    1.238864] RAX: 0000000000000000 RBX: 00000000ffffffea RCX: 0000000000000000
> > > L453[    1.238864] RDX: 0000000000000000 RSI: ffffffffffffffea RDI: ffffffffffffffea
> > > L454[    1.238864] RBP: ffff8cf23ffed080 R08: ffffffffb385db88 R09: ffffffffb385db80
> > > L455[    1.238864] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8cf23ffed0ab
> > > L456[    1.238864] R13: 0000000000000000 R14: ffffffffb380c040 R15: 00000000b43e8000
> > > L457[    1.238864] FS:  0000000000000000(0000) GS:ffff8cf287953000(0000) knlGS:0000000000000000
> > > L458[    1.238864] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > L459[    1.238864] CR2: 000000000000002c CR3: 000000000d630000 CR4: 00000000001006f0
> > > L460[    1.238864] Call Trace:
> > > L461[    1.238864]  <TASK>
> > > L462[    1.238864]  start_kernel+0x7a2/0x7b0
> > > L463[    1.238864]  x86_64_start_reservations+0x24/0x30
> > > L464[    1.238864]  x86_64_start_kernel+0xcd/0xd0
> > > L465[    1.238864]  common_startup_64+0x13e/0x158
> > > L466[    1.238864]  </TASK>
> > > L467[    1.238864] Modules linked in:
> > > L468[    1.238864] CR2: 000000000000002c
> > > L469[    1.238864] ---[ end trace 0000000000000000 ]---
> > > L470[    1.238864] RIP: 0010:rest_init+0x33/0xd0
> > 
> > Same here indepently, but not yet bisected.
> 
> Same here as well, bisected down to: a0c935bd1f76 ("fs: add umh argument to
> struct kernel_clone_args"), it looks like we need to cherry-pick
> 14adbd5341aa ("fs: stop sharing fs_struct between init_task and pid 1"),
> with that I can boot a kernel.

Thanks for the bisection, I'll go queue that up now and push out a -rc2
soon.

greg k-h