Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting for once, to make this easily accessible to everyone. Hmm, from the outside it looks like nobody looked into below regression report (reminder: culprit authored by Bartosz Golaszewski and commited by Bjorn Andersson). Wonder why. Did it fall through the cracks or did I miss anything? Rudraksha Gupta: I assume the issue still happens? /me considered bringing in Linus, but decided to wait a bit Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) On 25.08.24 22:40, Rudraksha Gupta wrote: > [...] >> Furthermore two quick questions: >> >> [ 0.000000] Linux version 6.10.0-rc1-msm8960+ (a@fpx-l-AMER03105) >> (Ubuntu clang version 16.0.6 (15), Ubuntu LLD 16.0.6) #17 SMP Sat >> >> Is that a vanilla kernel or one close to it? That "msm8960+" sounds >> somewhat suspicious. > > It's vanilla. I use this script to build Linux and busybox and then > flash it to my phone: https://codeberg.org/LogicalErzor/ > mainline_builder/src/branch/master/samsung/expressatt/build.sh > > The msm8960 is defined as a localversion in the defconfig pastebin (I > should've named it config instead). Not sure where the + came from though > >> And does the problem still happen with latest mainline? Cconsider >> retrying with -rc5, which should be out in the next 24h. > > Yes, -rc5's commit is 5be63fc19fcaa4c236b307420483578a56986a37 and I'm > still encountering it. Pasted below > > [ 0.000000] Booting Linux on physical CPU 0x0 > [ 0.000000] Linux version 6.11.0-rc5-msm8960 (a@fpx-l-AMER03105) > (Ubuntu clang version 16.0.6 (15), Ubuntu LLD 16.0.6) #19 SMP Sun Aug 25 > 15:55:46 EDT 2024 > [ 0.000000] CPU: ARMv7 Processor [511f04d4] revision 4 (ARMv7), > cr=10c5787d > [ 0.000000] CPU: div instructions available: patching division code > [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction > cache > [ 0.000000] OF: fdt: Machine model: Samsung Galaxy Express SGH-I437 > [ 0.000000] earlycon: msm_serial_dm0 at MMIO 0x16440000 (options > '115200n8') > [ 0.000000] printk: legacy bootconsole [msm_serial_dm0] enabled > [ 0.000000] Memory policy: Data cache writealloc > [ 0.000000] Zone ranges: > [ 0.000000] Normal [mem 0x0000000080200000-0x00000000afffffff] > [ 0.000000] HighMem [mem 0x00000000b0000000-0x00000000bfffffff] > [ 0.000000] Movable zone start for each node > [ 0.000000] Early memory node ranges > [ 0.000000] node 0: [mem 0x0000000080200000-0x0000000088cfffff] > [ 0.000000] node 0: [mem 0x0000000090000000-0x00000000bfffffff] > [ 0.000000] Initmem setup node 0 [mem > 0x0000000080200000-0x00000000bfffffff] > [ 0.000000] On node 0, zone Normal: 512 pages in unavailable ranges > [ 0.000000] On node 0, zone Normal: 768 pages in unavailable ranges > [ 0.000000] percpu: Embedded 19 pages/cpu s45144 r8192 d24488 u77824 > [ 0.000000] Kernel command line: earlycon clk_ignore_unused > PMOS_NO_OUTPUT_REDIRECT console=ttyMSM0,115200 > [ 0.000000] Unknown kernel command line parameters > "PMOS_NO_OUTPUT_REDIRECT", will be passed to user space. > [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 > bytes, linear) > [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 > bytes, linear) > [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: > 232192 > [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off > [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 > [ 0.000000] ftrace: allocating 38226 entries in 75 pages > [ 0.000000] ftrace: allocated 75 pages with 4 groups > [ 0.000000] trace event string verifier disabled > [ 0.000000] rcu: Hierarchical RCU implementation. > [ 0.000000] rcu: RCU event tracing is enabled. > [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=4 to > nr_cpu_ids=2. > [ 0.000000] Rude variant of Tasks RCU enabled. > [ 0.000000] Tracing variant of Tasks RCU enabled. > [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay > is 10 jiffies. > [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 > [ 0.000000] RCU Tasks Rude: Setting shift to 1 and lim to 1 > rcu_task_cb_adjust=1. > [ 0.000000] RCU Tasks Trace: Setting shift to 1 and lim to 1 > rcu_task_cb_adjust=1. > [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 > [ 0.000000] rcu: srcu_init: Setting srcu_struct sizes based on > contention. > [ 0.000000] clocksource: dg_timer: mask: 0xffffffff max_cycles: > 0xffffffff, max_idle_ns: 283149695806 ns > [ 0.000003] sched_clock: 32 bits at 7MHz, resolution 148ns, wraps > every 318145725365ns > [ 0.009533] Switching to timer-based delay loop, resolution 148ns > [ 0.017921] Console: colour dummy device 80x30 > [ 0.023312] Calibrating delay loop (skipped), value calculated using > timer frequency.. 13.50 BogoMIPS (lpj=67500) > [ 0.027574] CPU: Testing write buffer coherency: ok > [ 0.037857] pid_max: default: 32768 minimum: 301 > [ 0.042568] LSM: initializing lsm=capability > [ 0.047412] Mount-cache hash table entries: 2048 (order: 1, 8192 > bytes, linear) > [ 0.051538] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 > bytes, linear) > [ 0.060533] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 > [ 0.066438] 8<--- cut here --- > [ 0.071897] Unable to handle kernel NULL pointer dereference at > virtual address 00000090 when read > [ 0.074743] [00000090] *pgd=00000000 > [ 0.083672] Internal error: Oops: 5 [#1] SMP ARM > [ 0.087285] Modules linked in: > [ 0.091836] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.11.0- > rc5-msm8960 #19 > [ 0.094677] Hardware name: Generic DT based system > [ 0.102149] PC is at qcom_scm_get_tzmem_pool+0x1c/0x24 > [ 0.106958] LR is at __scm_smc_call+0x30/0x2d4 > [ 0.112026] pc : [<c08986c0>] lr : [<c089b1e4>] psr: 60000013 > [ 0.116413] sp : f0815d78 ip : f0815e98 fp : f0815d78 > [ 0.122511] r10: 00000002 r9 : f0815e18 r8 : 00000001 > [ 0.127666] r7 : c1106694 r6 : f0815e30 r5 : c1270040 r4 : 00000001 > [ 0.132825] r3 : f0815e18 r2 : 00000002 r1 : f0815e30 r0 : 00000000 > [ 0.139355] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM > Segment none > [ 0.145804] Control: 10c5787d Table: 8000406a DAC: 00000051 > [ 0.152930] Register r0 information: NULL pointer > [ 0.158599] Register r1 information: 2-page vmalloc region starting > at 0xf0814000 allocated at copy_process+0x16c/0xdec > [ 0.163251] Register r2 information: non-paged memory > [ 0.173722] Register r3 information: 2-page vmalloc region starting > at 0xf0814000 allocated at copy_process+0x16c/0xdec > [ 0.178889] Register r4 information: non-paged memory > [ 0.189361] Register r5 information: non-slab/vmalloc memory > [ 0.194518] Register r6 information: 2-page vmalloc region starting > at 0xf0814000 allocated at copy_process+0x16c/0xdec > [ 0.200197] Register r7 information: non-slab/vmalloc memory > [ 0.210586] Register r8 information: non-paged memory > [ 0.216428] Register r9 information: 2-page vmalloc region starting > at 0xf0814000 allocated at copy_process+0x16c/0xdec > [ 0.221336] Register r10 information: non-paged memory > [ 0.231809] Register r11 information: 2-page vmalloc region starting > at 0xf0814000 allocated at copy_process+0x16c/0xdec > [ 0.236974] Register r12 information: 2-page vmalloc region starting > at 0xf0814000 allocated at copy_process+0x16c/0xdec > [ 0.247889] Process swapper/0 (pid: 1, stack limit = 0x(ptrval)) > [ 0.258620] Stack: (0xf0815d78 to 0xf0816000) > [ 0.264550] 5d60: f0815e08 c089b1e4 > [ 0.268773] 5d80: f0815d9c c0193d54 c1117d70 c1124000 00000036 > 00000000 c1117d70 f0815da8 > [ 0.276849] 5da0: c12589bc 00000800 00000035 00000000 039ba92c > 00000000 c2000030 c0a6f3a4 > [ 0.284927] 5dc0: f0815dd8 c0193d54 c1117d70 c1124000 00000036 > 00000000 c1117d70 00000000 > [ 0.293004] 5de0: f0815e18 c0193d54 e37f60fb 00000001 c1270040 > 00000000 c1106694 00000001 > [ 0.301080] 5e00: f0815ef0 00000000 f0815eb0 c089a830 00000001 > c019428c f0815e78 c019428c > [ 0.309157] 5e20: f0815e48 00000000 f0815ebf f0815e4c 00000006 > 00000001 00000001 00000000 > [ 0.317234] 5e40: 02000601 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > [ 0.325310] 5e60: 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > [ 0.333387] 5e80: 00000000 00000000 00000000 00000000 00000002 > 00000000 f0815ebf e37f60fb > [ 0.341465] 5ea0: 00000000 f0815ee0 00000000 00000000 f0815ed0 > c08989f4 f0815ec8 00aa2034 > [ 0.349543] 5ec0: f0815ef8 c0b8d77f 00000001 00000000 f0815f68 > c08988d4 00000001 c01012a0 > [ 0.357618] 5ee0: 00000001 00000001 00000002 00000000 00000001 > 00000000 801012a0 00000000 > [ 0.365695] 5f00: 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > [ 0.373771] 5f20: 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > [ 0.381851] 5f40: 00000002 00000000 e37f60fb c14ff100 00000001 > c1568000 00000000 00000000 > [ 0.389927] 5f60: 00000000 00000000 f0815f80 c100bf08 c14ff100 > 00000001 c1568000 00000000 > [ 0.398005] 5f80: f0815f98 c1001538 00000000 c0a9dc8c 00000000 > 00000000 f0815fa8 c0a9dcac > [ 0.406082] 5fa0: 00000000 00000000 00000000 c010014c 00000000 > 00000000 00000000 00000000 > [ 0.414158] 5fc0: 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > [ 0.422234] 5fe0: 00000000 00000000 00000000 00000000 00000013 > 00000000 00000000 00000000 > [ 0.430303] Call trace: > [ 0.430329] qcom_scm_get_tzmem_pool from __scm_smc_call+0x30/0x2d4 > [ 0.440957] __scm_smc_call from __get_convention+0xac/0x128 > [ 0.446885] __get_convention from qcom_scm_call_atomic+0x24/0x90 > [ 0.452730] qcom_scm_call_atomic from qcom_scm_set_boot_addr+0xe4/0x100 > [ 0.458658] qcom_scm_set_boot_addr from qcom_smp_prepare_cpus+0x1c/0x94 > [ 0.465362] qcom_smp_prepare_cpus from kernel_init_freeable+0xcc/0x140 > [ 0.471978] kernel_init_freeable from kernel_init+0x20/0x144 > [ 0.478251] kernel_init from ret_from_fork+0x14/0x28 > [ 0.484086] Exception stack(0xf0815fb0 to 0xf0815ff8) > [ 0.489076] 5fa0: 00000000 > 00000000 00000000 00000000 > [ 0.494068] 5fc0: 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > [ 0.502143] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 > [ 0.510226] Code: e28dd004 e3000044 e34c0127 e5900000 (e5900090) > [ 0.516655] ---[ end trace 0000000000000000 ]--- > [ 0.522765] Kernel panic - not syncing: Attempted to kill init! > exitcode=0x0000000b > [ 0.527408] ---[ end Kernel panic - not syncing: Attempted to kill > init! exitcode=0x0000000b ]--- > > > Thanks, > > Rudraksha > > > -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr If I did something stupid, please tell me, as explained on that page. #regzbot poke
