Hello! On Tue, 23 May 2023 at 00:28, Vlastimil Babka <vbabka@xxxxxxx> wrote: > On 5/22/23 20:23, Daniel Díaz wrote: > > Hello! > > > > Would the stable maintainers please consider backporting the following > > commit to the 6.1? We are trying to build gki_defconfig (plus a few > > extras) on Arm64 and test it under Qemu-arm64, but it fails to boot. > > Bisection has pointed here. > > You mean the bisection was done to find the first "good" commit between 6.1 > and e.g. 6.3? > > As others said, this commit wasn't expected to be a fix to a known bug. > Maybe you found one that we didn't know of, or it might be accidentaly > masking some other bug. How interesting! Yes, we happened to run a bisection between v6.1 and v6.3 and we found where it started working with the following configuration: https://storage.tuxsuite.com/public/linaro/daniel/builds/2QA2CHQUpqKe27FyMZrBNILVwXi/config With that patch on top of v6.1.29 it boots fine under Qemu-arm64; as v6.1.y stands, it panics with this: -----8<----- Unexpected kernel BRK exception at EL1 Internal error: BRK handler: 00000000f2000001 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.29 #1 Hardware name: linux,dummy-virt (DT) pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : pskb_expand_head+0x448/0x480 lr : pskb_expand_head+0x13c/0x480 sp : ffff80000802b850 x29: ffff80000802b860 x28: 00000000000002c0 x27: 0000000000000ec0 x26: ffff0000c02c8ec0 x25: ffff0000c02c8000 x24: 00000000000128c0 x23: ffff0000c030e800 x22: ffff0000c030e800 x21: 0000000000000240 x20: 0000000000000000 x19: ffff0000c085e900 x18: ffff800008021068 x17: 00000000ad6b63b6 x16: 00000000ad6b63b6 x15: 0001001c00070038 x14: 0000000c00020008 x13: 00882cc00000ffff x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000001 x8 : ffff0000c030eac0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff0000c030eaf0 x4 : ffff0000ff7abd10 x3 : 0000000000001740 x2 : ffff0000c02c8000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: pskb_expand_head+0x448/0x480 netlink_trim+0xa0/0xc8 netlink_broadcast+0x54/0x764 genl_ctrl_event+0x21c/0x37c genl_register_family+0x628/0x708 thermal_netlink_init+0x28/0x3c thermal_init+0x28/0xec do_one_initcall+0xfc/0x358 do_initcall_level+0xd8/0x1b4 do_initcalls+0x64/0xa8 do_basic_setup+0x2c/0x3c kernel_init_freeable+0x118/0x198 kernel_init+0x30/0x1c0 ret_from_fork+0x10/0x20 Code: f9406679 38776b28 3707eba8 17ffff67 (d4200020) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: BRK handler: Fatal exception SMP: stopping secondary CPUs ----->8----- Greetings! Daniel Díaz daniel.diaz@xxxxxxxxxx
