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

[Florian Fainelli <f.fainelli@gmail.com>]

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.

[    0.050862] VFS: Finished mounting rootfs on nullfs
[    0.056357] Unable to handle kernel NULL pointer dereference at 
virtual address 000000000000002c
[    0.065711] Mem abort info:
[    0.068679]   ESR = 0x0000000096000004
[    0.072657]   EC = 0x25: DABT (current EL), IL = 32 bits
[    0.078323]   SET = 0, FnV = 0
[    0.081587]   EA = 0, S1PTW = 0
[    0.084930]   FSC = 0x04: level 0 translation fault
[    0.090117] Data abort info:
[    0.093189]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
[    0.099019]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[    0.104380]   GCS = 0, Overlay = 0, DirtyBit = 0
[    0.109297] [000000000000002c] user address but active_mm is swapper
[    0.116061] Internal error: Oops: 0000000096000004 [#1]  SMP
[    0.122056] Modules linked in:
[    0.125308] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 
7.2.13-rc1-gd1c66ab3e3bd #2 PREEMPTLAZY
[    0.135124] Hardware name: BCM97268SV (DT)
[    0.139473] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS 
BTYPE=--)
[    0.146859] pc : rest_init+0x4c/0xf0
[    0.150659] lr : rest_init+0x4c/0xf0
[    0.154461] sp : ffff800083133e30
[    0.157982] x29: ffff800083133e30 x28: 0000000000000000 x27: 
0000000000000000
[    0.165565] x26: ffff00001a5e2e40 x25: 0000000000000000 x24: 
ffff800080fc0000
[    0.173157] x23: ffff800083137a00 x22: ffff800083140e40 x21: 
ffff00001a5d1700
[    0.180774] x20: 00000000ffffffea x19: ffff80008314f300 x18: 
0000000000000006
[    0.188374] x17: 0000000000001000 x16: 0000000000000000 x15: 
000000000000cfff
[    0.195966] x14: ffffffffffff8000 x13: 0000000000000000 x12: 
ffff8000832fed50
[    0.203548] x11: 0000000000000040 x10: ffff80008314f308 x9 : 
ffff80008314f300
[    0.211165] x8 : 0000000000000000 x7 : 000000004308a007 x6 : 
0000000000000000
[    0.218757] x5 : ffff800083276900 x4 : ffff800083133cb8 x3 : 
0000000000000000
[    0.226356] x2 : 0000000000000000 x1 : ffffffffffffffea x0 : 
0000000000000000
[    0.233914] Call trace:
[    0.236505]  rest_init+0x4c/0xf0 (P)
[    0.240302]  start_kernel+0x6dc/0x810
[    0.244204]  __primary_switched+0x88/0x98
[    0.248449] Code: 910c0273 aa1303e1 2a1403e0 97c30fa2 (b9402c04)
[    0.254926] ---[ end trace 0000000000000000 ]---
[    0.259849] Kernel panic - not syncing: Attempted to kill the idle task!
[    0.266980] ---[ end Kernel panic - not syncing: Attempted to kill 
the idle task! ]---
-- 
Florian