Am 17.09.2026 um 22:19 schrieb Peter Schneider:
Am 17.09.2026 um 21:35 schrieb Brett A C Sheffield:
# first 'bad' commit: [22ae428b0045981bd19f8c75f700a67198062f32] mm/hugetlb: initialize gigantic bootmem hugepage struct pages earlier
Yes, that's what I found, too.
When I revert 22ae428b0045981bd19f8c75f700a67198062f32 from rc1, the boot crash goes away and my machine boots successfully.
However, then I have another weirdo in the dmesg output:
[ 65.573304] ------------[ cut here ]------------ [ 65.573307] WARNING: CPU: 14 PID: 0 at kernel/sched/fair.c:5303 place_entity+0x13b/0x140 [ 65.573316] Modules linked in: uas usbhid usb_storage hid isci psmouse igb crc32_pclmul libsas aacraid serio_raw i2c_i801 ioatdma ahci ehci_pci i2c_mux ehci_hcd i2c_algo_bit libahci i2c_smbus scsi_transport_sas lpc_ich dca wmi [ 65.573336] CPU: 14 UID: 0 PID: 0 Comm: swapper/14 Not tainted 6.12.111-rc1+ #1 [ 65.573339] Hardware name: ASUSTeK COMPUTER INC. Z9PE-D16 Series/Z9PE-D16 Series, BIOS 5601 06/11/2015 [ 65.573342] RIP: 0010:place_entity+0x13b/0x140 [ 65.573345] Code: 41 5d 41 5e 5d 31 c0 31 d2 31 c9 31 f6 31 ff c3 cc cc cc cc be 02 00 00 00 48 c1 e9 0a 48 39 f1 48 0f 42 ce 48 8d 34 11 eb a9 <0f> 0b eb b6 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f [ 65.573347] RSP: 0018:ffffd09188287cd8 EFLAGS: 00010046 [ 65.573350] RAX: 0000000000000000 RBX: ffff8bc1cb32ce00 RCX: 00000000000003cb [ 65.573352] RDX: 0000000000000000 RSI: 00000000000003cb RDI: 00000000002d0e7f [ 65.573353] RBP: ffffd09188287cf8 R08: 0000000000000000 R09: 0000000000000000 [ 65.573355] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000037e492a9 [ 65.573356] R13: ffff8be13f337280 R14: 0000000000000000 R15: 0000000000000000 [ 65.573357] FS: 0000000000000000(0000) GS:ffff8be13f300000(0000) knlGS:0000000000000000 [ 65.573359] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.573361] CR2: 0000650f5b7d2118 CR3: 000000208ccca006 CR4: 00000000001706f0 [ 65.573363] Call Trace: [ 65.573366] <TASK> [ 65.573368] reweight_entity+0x1d2/0x200 [ 65.573372] update_cfs_group+0xb4/0xf0 [ 65.573374] enqueue_task_fair+0x285/0x8f0 [ 65.573377] enqueue_task+0x3b/0x220 [ 65.573383] ttwu_do_activate+0x75/0x270 [ 65.573386] sched_ttwu_pending+0xfe/0x1e0 [ 65.573389] __flush_smp_call_function_queue+0x155/0x440 [ 65.573394] flush_smp_call_function_queue+0x37/0x80 [ 65.573397] do_idle+0x15d/0x2c0 [ 65.573401] ? complete+0x6d/0x80 [ 65.573406] cpu_startup_entry+0x29/0x30 [ 65.573409] start_secondary+0x119/0x140 [ 65.573414] common_startup_64+0x13e/0x141 [ 65.573420] </TASK> [ 65.573421] ---[ end trace 0000000000000000 ]---
So I have bisected this warning, and the first bad commit is
[af5775004c9c02f37be06d2035a056b6abb1cb6c] sched/fair: Fix EEVDF entity placement bug causing scheduling lag
Trying to revert this from 6.12.111-rc1 however resulted in some conflicts I was unable to resolve. There are other dependencies like:
Stable-dep-of: 51b0e68cfa0a ("sched/eevdf: Fix rb augmented with multi fields"), which is [09cd469c733035b01b445a6f916e8ea425330c45] in linux-next-rc) and also [3bc70680c7ab333ed00a5e1fe33ed669c44d5544] ("sched/fair: Fix lag clamp").
This is my bisect log:
root@linus:/usr/src/linux-stable-rc# cat my_bisect.log git bisect start # Status: warte auf guten und schlechten Commit # bad: [ae53f4b7c7f60eca321af54b4ada3f24082c242e] Revert "mm/hugetlb: initialize gigantic bootmem hugepage struct pages earlier" git bisect bad ae53f4b7c7f60eca321af54b4ada3f24082c242e # Status: warte auf gute(n) Commit(s), schlechter Commit bekannt # good: [fa5b06866b643cce7072a4e7c6be7ee3f0f1b95c] Linux 6.12.110 git bisect good fa5b06866b643cce7072a4e7c6be7ee3f0f1b95c # good: [0b70c4d3654f89b7fdfcae684ea7371fbc7de72c] Bluetooth: hci_core: Fix race condition during device registration git bisect good 0b70c4d3654f89b7fdfcae684ea7371fbc7de72c # bad: [818d7fa0a53b82f2e8db56aac615d08d3da72548] ASoC: sprd: validate compress buffer sizes against fixed allocations git bisect bad 818d7fa0a53b82f2e8db56aac615d08d3da72548 # good: [56c7ca9d7037acb880cad9eae68c479cc4d6f200] net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put git bisect good 56c7ca9d7037acb880cad9eae68c479cc4d6f200 # good: [03d4a3b6610bc9f86d8ec4d9a75a2d5376b47bb7] net: ks8851: Fix receiver error in 100BASE-TX mode following software power-down git bisect good 03d4a3b6610bc9f86d8ec4d9a75a2d5376b47bb7 # bad: [1d8ee4f560be8b347173dc7c07fd41e4baa318d7] net: stmmac: add stmmac_tso_header_size() git bisect bad 1d8ee4f560be8b347173dc7c07fd41e4baa318d7 # bad: [af5775004c9c02f37be06d2035a056b6abb1cb6c] sched/fair: Fix EEVDF entity placement bug causing scheduling lag git bisect bad af5775004c9c02f37be06d2035a056b6abb1cb6c # good: [7b6988750feec0bd3da256e9fe80244fa358ab74] net: stmmac: initialize ptp_lock at probe time git bisect good 7b6988750feec0bd3da256e9fe80244fa358ab74 # good: [52080cefeb2f454cdb14fb7a052d35566609c1ad] perf/core: Check sample_type in perf_sample_save_callchain git bisect good 52080cefeb2f454cdb14fb7a052d35566609c1ad # good: [edeca3f32161462596e6e03e69a3443dd80c5603] perf/x86/intel/ds: Remove redundant assignments to sample.period git bisect good edeca3f32161462596e6e03e69a3443dd80c5603 # good: [fc602eb1451422bf0e4798ac68f8c15904e0b7aa] perf/x86/intel: Correct pt_regs->flags update for PEBS path git bisect good fc602eb1451422bf0e4798ac68f8c15904e0b7aa # first bad commit: [af5775004c9c02f37be06d2035a056b6abb1cb6c] sched/fair: Fix EEVDF entity placement bug causing scheduling lag
Beste Grüße, Peter Schneider