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Fri, 02 Feb 2024 09:28:46 +0100 Message-ID: <983189ec-e8fc-41ef-bad7-cfebad20ac83@gmx.de> Date: Fri, 2 Feb 2024 09:28:46 +0100 Precedence: bulk X-Mailing-List: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH][RFC] workqueue: Fix kernel panic on CPU hot-unplug Content-Language: en-US To: Tejun Heo Cc: Helge Deller , Lai Jiangshan , linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org References: <8a266076-b3dc-4a39-aac4-089e2ef77da3@gmx.de> From: Helge Deller Autocrypt: addr=deller@gmx.de; keydata= xsFNBF3Ia3MBEAD3nmWzMgQByYAWnb9cNqspnkb2GLVKzhoH2QD4eRpyDLA/3smlClbeKkWT HLnjgkbPFDmcmCz5V0Wv1mKYRClAHPCIBIJgyICqqUZo2qGmKstUx3pFAiztlXBANpRECgwJ r+8w6mkccOM9GhoPU0vMaD/UVJcJQzvrxVHO8EHS36aUkjKd6cOpdVbCt3qx8cEhCmaFEO6u CL+k5AZQoABbFQEBocZE1/lSYzaHkcHrjn4cQjc3CffXnUVYwlo8EYOtAHgMDC39s9a7S90L 69l6G73lYBD/Br5lnDPlG6dKfGFZZpQ1h8/x+Qz366Ojfq9MuuRJg7ZQpe6foiOtqwKym/zV dVvSdOOc5sHSpfwu5+BVAAyBd6hw4NddlAQUjHSRs3zJ9OfrEx2d3mIfXZ7+pMhZ7qX0Axlq Lq+B5cfLpzkPAgKn11tfXFxP+hcPHIts0bnDz4EEp+HraW+oRCH2m57Y9zhcJTOJaLw4YpTY GRUlF076vZ2Hz/xMEvIJddRGId7UXZgH9a32NDf+BUjWEZvFt1wFSW1r7zb7oGCwZMy2LI/G aHQv/N0NeFMd28z+deyxd0k1CGefHJuJcOJDVtcE1rGQ43aDhWSpXvXKDj42vFD2We6uIo9D 1VNre2+uAxFzqqf026H6cH8hin9Vnx7p3uq3Dka/Y/qmRFnKVQARAQABzRxIZWxnZSBEZWxs ZXIgPGRlbGxlckBnbXguZGU+wsGRBBMBCAA7AhsDBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheA FiEERUSCKCzZENvvPSX4Pl89BKeiRgMFAl3J1zsCGQEACgkQPl89BKeiRgNK7xAAg6kJTPje uBm9PJTUxXaoaLJFXbYdSPfXhqX/BI9Xi2VzhwC2nSmizdFbeobQBTtRIz5LPhjk95t11q0s uP5htzNISPpwxiYZGKrNnXfcPlziI2bUtlz4ke34cLK6MIl1kbS0/kJBxhiXyvyTWk2JmkMi REjR84lCMAoJd1OM9XGFOg94BT5aLlEKFcld9qj7B4UFpma8RbRUpUWdo0omAEgrnhaKJwV8 qt0ULaF/kyP5qbI8iA2PAvIjq73dA4LNKdMFPG7Rw8yITQ1Vi0DlDgDT2RLvKxEQC0o3C6O4 iQq7qamsThLK0JSDRdLDnq6Phv+Yahd7sDMYuk3gIdoyczRkXzncWAYq7XTWl7nZYBVXG1D8 gkdclsnHzEKpTQIzn/rGyZshsjL4pxVUIpw/vdfx8oNRLKj7iduf11g2kFP71e9v2PP94ik3 Xi9oszP+fP770J0B8QM8w745BrcQm41SsILjArK+5mMHrYhM4ZFN7aipK3UXDNs3vjN+t0zi qErzlrxXtsX4J6nqjs/mF9frVkpv7OTAzj7pjFHv0Bu8pRm4AyW6Y5/H6jOup6nkJdP/AFDu 5ImdlA0jhr3iLk9s9WnjBUHyMYu+HD7qR3yhX6uWxg2oB2FWVMRLXbPEt2hRGq09rVQS7DBy dbZgPwou7pD8MTfQhGmDJFKm2jvOwU0EXchrcwEQAOsDQjdtPeaRt8EP2pc8tG+g9eiiX9Sh rX87SLSeKF6uHpEJ3VbhafIU6A7hy7RcIJnQz0hEUdXjH774B8YD3JKnAtfAyuIU2/rOGa/v UN4BY6U6TVIOv9piVQByBthGQh4YHhePSKtPzK9Pv/6rd8H3IWnJK/dXiUDQllkedrENXrZp eLUjhyp94ooo9XqRl44YqlsrSUh+BzW7wqwfmu26UjmAzIZYVCPCq5IjD96QrhLf6naY6En3 ++tqCAWPkqKvWfRdXPOz4GK08uhcBp3jZHTVkcbo5qahVpv8Y8mzOvSIAxnIjb+cklVxjyY9 dVlrhfKiK5L+zA2fWUreVBqLs1SjfHm5OGuQ2qqzVcMYJGH/uisJn22VXB1c48yYyGv2HUN5 lC1JHQUV9734I5cczA2Gfo27nTHy3zANj4hy+s/q1adzvn7hMokU7OehwKrNXafFfwWVK3OG 1dSjWtgIv5KJi1XZk5TV6JlPZSqj4D8pUwIx3KSp0cD7xTEZATRfc47Yc+cyKcXG034tNEAc xZNTR1kMi9njdxc1wzM9T6pspTtA0vuD3ee94Dg+nDrH1As24uwfFLguiILPzpl0kLaPYYgB wumlL2nGcB6RVRRFMiAS5uOTEk+sJ/tRiQwO3K8vmaECaNJRfJC7weH+jww1Dzo0f1TP6rUa fTBRABEBAAHCwXYEGAEIACAWIQRFRIIoLNkQ2+89Jfg+Xz0Ep6JGAwUCXchrcwIbDAAKCRA+ Xz0Ep6JGAxtdEAC54NQMBwjUNqBNCMsh6WrwQwbg9tkJw718QHPw43gKFSxFIYzdBzD/YMPH l+2fFiefvmI4uNDjlyCITGSM+T6b8cA7YAKvZhzJyJSS7pRzsIKGjhk7zADL1+PJei9p9idy RbmFKo0dAL+ac0t/EZULHGPuIiavWLgwYLVoUEBwz86ZtEtVmDmEsj8ryWw75ZIarNDhV74s BdM2ffUJk3+vWe25BPcJiaZkTuFt+xt2CdbvpZv3IPrEkp9GAKof2hHdFCRKMtgxBo8Kao6p Ws/Vv68FusAi94ySuZT3fp1xGWWf5+1jX4ylC//w0Rj85QihTpA2MylORUNFvH0MRJx4mlFk XN6G+5jIIJhG46LUucQ28+VyEDNcGL3tarnkw8ngEhAbnvMJ2RTx8vGh7PssKaGzAUmNNZiG MB4mPKqvDZ02j1wp7vthQcOEg08z1+XHXb8ZZKST7yTVa5P89JymGE8CBGdQaAXnqYK3/yWf FwRDcGV6nxanxZGKEkSHHOm8jHwvQWvPP73pvuPBEPtKGLzbgd7OOcGZWtq2hNC6cRtsRdDx 4TAGMCz4j238m+2mdbdhRh3iBnWT5yPFfnv/2IjFAk+sdix1Mrr+LIDF++kiekeq0yUpDdc4 ExBy2xf6dd+tuFFBp3/VDN4U0UfG4QJ2fg19zE5Z8dS4jGIbLg== In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:ipmvDoZLlJVuhpJP5isqbbXaf1SBQxqxh2mG9K9192nUiG8FJpi 3axPNOpBCcX+HDcKlYy2YTp2vKGp7poDvr+H7CcyqPxP3O9z+sVc0HClgiI3PMZEc1AQKy+ kE9dbYocG1VBbCrGxgOCdPCPm8a89WTuVRsvO5iPmHa+ercDDvlnUy0uto6hj0fU9bEEUtr MKX8Q3pxt3R7DA5qm8YEQ== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:neSYiQ+dFqY=;chhKuJ2hVdC1eqVUAGJTx6iZRX/ 1DV4MGigwqD1U0+rXDQx2LFdXQBWiGCp0KIdGHnQtMNcn3MhCefV2W8hezdGpsEb0MaJyne9I TF/SfD+TybNcm49rofnYmF9Li9o8SMpbea5lFx8YH9mDfiaLEUsrsW8OSKqPyqw+/7gDw43AS 6L9LAh0u2gMLMu3qJ642jxX9KQ9F9HCLn4ok0JCBMk70FDTn0glwOLtPohILnhtJhFrGClvJj pydrR4yOtaQcMZtpk+IY/NvLPuJuwjqqPofcKOttCbKvrjZ0jCb7dbYY9bOBn4M8hn/yYAN9Z UrfllTJOZZWuJYgsvIXDGQL8NLHiDtMqqn9WsgBJmSoYC+gL5itqv5U9YhRjpbXTwMJ+1iYb0 AlVjwf+on42mGpP2gonM+hgv3KurGCveE/qdtyJ37MNtBTBAPJDyqQtOke0IXL2mKe8fNfGYw vO1Fz3JRMIXpDwu47nLyks2i/NZ8vJKSWpDTF5X9X+u51+hmew3v9tmNJQwxoF4NwTquyA7mL KIvnW7gnqoJdesXd6+/n983Dq8pPPuYGn194vsa/u7+qB+BeGwpXSMCzJdkAJJPnIGo3V+O1G AG1ru/bswPeZ0pmXIubSa51l7AqY3XgE+QFj5efIVz7LXyoVhqDRrIIsd32XWtbs5dq5c9gXu nP1atNnFF8zwEbGHUrNg8JMacSKQoReZ0t4asHN+8q/PawXh6ArkYxoyM3Te43lrjs6j1uBy8 GFwhEIqh/84gFPOD0ufPtxTzTf7N74MnT8JMATV+WhfUywoJqSyULk7hbsbWsETfDD8g58vpO UENQubIMZ04xZ9m4yu+ED1oO9YL6p9UfgfVYZPGoCLrl8= On 2/2/24 02:39, Tejun Heo wrote: > Hello, > > On Thu, Feb 01, 2024 at 06:56:20PM +0100, Helge Deller wrote: >> root@debian:~# drgn --main-symbols -s ./vmlinux ./wq_dump.py 2>&1 | tee= L >> Affinity Scopes >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >> wq_unbound_cpumask=3D0000ffff >> >> CPU >> nr_pods 16 >> pod_cpus [0]=3D00000001 [1]=3D00000002 [2]=3D00000004 [3]=3D00000008= [4]=3D00000010 [5]=3D00000020 [6]=3D00000040 [7]=3D00000080 [8]=3D0000010= 0 [9]=3D00000200 [10]=3D00000400 [11]=3D00000800 [12]=3D00001000 [13]=3D00= 002000 [14]=3D00004000 [15]=3D00008000 >> pod_node [0]=3D0 [1]=3D0 [2]=3D0 [3]=3D0 [4]=3D0 [5]=3D0 [6]=3D0 [7]= =3D0 [8]=3D0 [9]=3D0 [10]=3D0 [11]=3D0 [12]=3D0 [13]=3D0 [14]=3D0 [15]=3D0 >> cpu_pod [0]=3D0 [1]=3D1 > > wq_unbound_cpumask is saying there are 16 possible cpus but > for_each_possible_cpu() iteration is only giving two. Can you please app= ly > the following patch and post the boot dmesg? Thanks. > > diff --git a/kernel/workqueue.c b/kernel/workqueue.c > index ffb625db9771..d3fa2bea4d75 100644 > --- a/kernel/workqueue.c > +++ b/kernel/workqueue.c > @@ -7146,6 +7146,9 @@ void __init workqueue_init_early(void) > BUG_ON(!alloc_cpumask_var(&wq_requested_unbound_cpumask, GFP_KERNEL))= ; > BUG_ON(!zalloc_cpumask_var(&wq_isolated_cpumask, GFP_KERNEL)); > > + printk("XXX workqueue_init_early: possible_cpus=3D%*pb\n", > + cpumask_pr_args(cpu_possible_mask)); > + > cpumask_copy(wq_unbound_cpumask, cpu_possible_mask); > restrict_unbound_cpumask("HK_TYPE_WQ", housekeeping_cpumask(HK_TYPE_W= Q)); > restrict_unbound_cpumask("HK_TYPE_DOMAIN", housekeeping_cpumask(HK_TY= PE_DOMAIN)); > @@ -7290,6 +7293,9 @@ void __init workqueue_init(void) > struct worker_pool *pool; > int cpu, bkt; > > + printk("XXX workqueue_init: possible_cpus=3D%*pb\n", > + cpumask_pr_args(cpu_possible_mask)); > + > wq_cpu_intensive_thresh_init(); > > mutex_lock(&wq_pool_mutex); > @@ -7401,6 +7407,9 @@ void __init workqueue_init_topology(void) > struct workqueue_struct *wq; > int cpu; > > + printk("XXX workqueue_init_topology: possible_cpus=3D%*pb\n", > + cpumask_pr_args(cpu_possible_mask)); > + > init_pod_type(&wq_pod_types[WQ_AFFN_CPU], cpus_dont_share); > init_pod_type(&wq_pod_types[WQ_AFFN_SMT], cpus_share_smt); > init_pod_type(&wq_pod_types[WQ_AFFN_CACHE], cpus_share_cache); Here it is: [ 0.000000] Linux version 6.8.0-rc2-32bit+ (deller@carbonx1) (hppa-linu= x-gnu-gcc (GCC) 13.2.1 20230728 (Red Hat Cross 13.2.1-1), GNU ld version 2= .40-3.fc39) #1294 SMP PREEMPT Fri Feb 2 09:24:28 CET 2024 [ 0.000000] FP[0] enabled: Rev 1 Model 15 [ 0.000000] The 32-bit Kernel has started... [ 0.000000] Kernel default page size is 4 KB. Huge pages disabled. [ 0.000000] Determining PDC firmware type: System Map. [ 0.000000] model 00005020 00000481 00000000 02020202 77729da0 100000f0= 00000004 000000ba 000000ba 00000000 [ 0.000000] vers 00000008 [ 0.000000] CPUID vers 15 rev 8 (0x000001e8) [ 0.000000] capabilities 0x2 [ 0.000000] HP-UX model name: 9000/778/B160L [ 0.000000] MPE/iX model name: 9000/778/B160L [ 0.000000] Memory Ranges: [ 0.000000] 0) Start 0x0000000000000000 End 0x000000001fffffff Size = 512 MB [ 0.000000] Total Memory: 512 MB [ 0.000000] PDT: Firmware does not provide any page deallocation inform= ation. [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x0000000000000000-0x000001ffffffffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000000000-0x000000001fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000001fff= ffff] [ 0.000000] percpu: Embedded 16 pages/cpu s34912 r8192 d22432 u65536 [ 0.000000] SMP: bootstrap CPU ID is 0 [ 0.000000] Kernel command line: root=3D/dev/sda5 panic=3D-1 console= =3DttyS0 earlycon=3Dpdc [ 0.000000] earlycon: pdc0 at MMIO32be 0x00000000 (options '') [ 0.000000] printk: legacy bootconsole [pdc0] enabled [ 0.000000] printk: log_buf_len individual max cpu contribution: 4096 b= ytes [ 0.000000] printk: log_buf_len total cpu_extra contributions: 61440 by= tes [ 0.000000] printk: log_buf_len min size: 65536 bytes [ 0.000000] printk: log_buf_len: 131072 bytes [ 0.000000] printk: early log buf free: 63792(97%) [ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 by= tes, linear) [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 byt= es, linear) [ 0.000000] Sorting __ex_table... [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 1299= 20 [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off [ 0.000000] Memory: 497732K/524288K available (7216K kernel code, 3452K= rwdata, 2176K rodata, 3072K init, 388K bss, 26556K reserved, 0K cma-reser= ved) [ 0.000000] SLUB: HWalign=3D16, Order=3D0-3, MinObjects=3D0, CPUs=3D16,= Nodes=3D1 [ 0.000000] XXX workqueue_init_early: possible_cpus=3Dffff [ 0.000000] rcu: Preemptible hierarchical RCU implementation. [ 0.000000] Trampoline 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] NR_IRQS: 96 [ 0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contenti= on. [ 0.000149] sched_clock: 32 bits at 250MHz, resolution 4ns, wraps every= 8589934590ns [ 0.005146] Console: colour dummy device 160x64 [ 0.006640] Calibrating delay loop... 1771.11 BogoMIPS (lpj=3D8855552) [ 0.123925] pid_max: default: 32768 minimum: 301 [ 0.128202] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes,= linear) [ 0.128461] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 b= ytes, linear) [ 0.159241] XXX workqueue_init: possible_cpus=3Dffff [ 0.175221] RCU Tasks: Setting shift to 4 and lim to 1 rcu_task_cb_adju= st=3D1. [ 0.176798] RCU Tasks Trace: Setting shift to 4 and lim to 1 rcu_task_c= b_adjust=3D1. [ 0.177562] TOC handler registered [ 0.178992] rcu: Hierarchical SRCU implementation. [ 0.179222] rcu: Max phase no-delay instances is 1000. [ 0.193315] smp: Bringing up secondary CPUs ... [ 0.194144] smp: Brought up 1 node, 1 CPU [ 0.199106] XXX workqueue_init_topology: possible_cpus=3Dffff [ 0.208842] devtmpfs: initialized [ 0.217239] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffff= ff, max_idle_ns: 19112604462750000 ns [ 0.218067] futex hash table entries: 4096 (order: 5, 131072 bytes, lin= ear) [ 0.224055] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 0.231058] EISA bus registered [ 0.231481] Searching for devices... [ 0.237416] Found devices: [ 0.237623] 1. Phantom PseudoBC GSC+ Port [8] at 0xffc00000 { type:7, h= v:0x504, sv:0x0, rev:0x0 } [ 0.237874] 2. Dino PCI Bridge [8:0] at 0xfff80000 { type:13, hv:0x680,= sv:0xa, rev:0x3 } [ 0.238234] 3. Merlin+ 132 Dino RS-232 [8:0:63] at 0xfff83000 { type:10= , hv:0x22, sv:0x8c, rev:0x0 } [ 0.238490] 4. Merlin 160 Core BA [8:16] at 0xffd00000 { type:11, hv:0x= 3d, sv:0x81, rev:0x0 }, additional addresses: 0xffd0c000 0xffc00000 [ 0.238923] 5. Merlin 160 Core RS-232 [8:16:4] at 0xffd05000 { type:10,= hv:0x3d, sv:0x8c, rev:0x0 } [ 0.239193] 6. Merlin 160 Core Centronics [8:16:0] at 0xffd02000 { type= :10, hv:0x3d, sv:0x74, rev:0x0 }, additional addresses: 0xffd01000 0xffd03= 000 [ 0.239595] 7. Memory [63] at 0xfffff000 { type:1, hv:0x67, sv:0x9, rev= :0x0 } [ 0.239839] 8. Merlin L2 160 (9000/778/B160L) [48] at 0xfffb0000 { type= :0, hv:0x502, sv:0x4, rev:0x0 } [ 0.240145] 9. Merlin L2 160 (9000/778/B160L) [49] at 0xfffb1000 { type= :0, hv:0x502, sv:0x4, rev:0x0 } [ 0.240509] Found qemu fw_cfg interface at 0xfffa0000 [ 0.243313] CPU0: cpu core 0 of socket 0 [ 0.244475] CPU1: cpu core 0 of socket 1 [ 0.248134] Releasing cpu 1 now, hpa=3Dfffb1000 [ 0.255231] CPU(s): 2 out of 2 PA7300LC (PCX-L2) at 250.000000 MHz onli= ne [ 0.257077] alternatives: applied 17 out of 1505 patches [ 0.258013] Calculated flush threshold is 5909 KiB [ 0.258162] Cache flush threshold set to 2 KiB [ 0.258304] TLB flush threshold set to 480 KiB [ 0.259216] Lasi version 0 at 0xffd00000 found. [ 0.261123] Dino version 3.1 found at 0xfff80000 [ 0.263459] dino 8:0: PCI host bridge to bus 0000:00 [ 0.263841] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 0.264196] pci_bus 0000:00: root bus resource [mem 0xf0800000-0xff7fff= ff] [ 0.264476] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.265734] pci 0000:00:00.0: [1000:0012] type 00 class 0x010000 conven= tional PCI endpoint [ 0.267232] pci 0000:00:00.0: BAR 0 [io 0x1000-0x10ff] [ 0.268292] pci 0000:00:00.0: BAR 1 [mem 0xff7fe000-0xff7fe3ff] [ 0.269408] pci 0000:00:00.0: BAR 2 [mem 0xff7fc000-0xff7fdfff] [ 0.277602] pci 0000:00:01.0: [1011:0019] type 00 class 0x020000 conven= tional PCI endpoint [ 0.278298] pci 0000:00:01.0: BAR 0 [io 0x1100-0x117f] [ 0.278820] pci 0000:00:01.0: BAR 1 [mem 0xff7ff000-0xff7ff07f] [ 0.281323] pci 0000:00:02.0: [103c:1048] type 00 class 0x070000 conven= tional PCI endpoint [ 0.281867] pci 0000:00:02.0: BAR 0 [io 0x1180-0x1187] [ 0.284921] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00 [ 0.287179] pci 0000:00:00.0: BAR 2 [mem 0xf0800000-0xf0801fff]: assign= ed [ 0.287830] pci 0000:00:00.0: BAR 1 [mem 0xf0802000-0xf08023ff]: assign= ed [ 0.288225] pci 0000:00:00.0: BAR 0 [io 0x0100-0x01ff]: assigned [ 0.288628] pci 0000:00:01.0: BAR 0 [io 0x0080-0x00ff]: assigned [ 0.289002] pci 0000:00:01.0: BAR 1 [mem 0xf0803000-0xf080307f]: assign= ed [ 0.289359] pci 0000:00:02.0: BAR 0 [io 0x0010-0x0017]: assigned [ 0.290999] powersw: Soft power switch at 0xf07ffff0 enabled. [ 0.314551] SCSI subsystem initialized [ 0.317664] usbcore: registered new interface driver usbfs [ 0.318202] usbcore: registered new interface driver hub [ 0.318580] usbcore: registered new device driver usb [ 0.334210] vgaarb: loaded [ 0.337059] VFS: Disk quotas dquot_6.6.0 [ 0.337473] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 by= tes) [ 0.369580] NET: Registered PF_INET protocol family [ 0.371471] IP idents hash table entries: 8192 (order: 4, 65536 bytes, = linear) [ 0.380082] tcp_listen_portaddr_hash hash table entries: 256 (order: 0,= 5120 bytes, linear) [ 0.381103] Table-perturb hash table entries: 65536 (order: 6, 262144 b= ytes, linear) [ 0.381397] TCP established hash table entries: 4096 (order: 2, 16384 b= ytes, linear) [ 0.382605] TCP bind hash table entries: 4096 (order: 5, 163840 bytes, = linear) [ 0.383338] TCP: Hash tables configured (established 4096 bind 4096) [ 0.385144] UDP hash table entries: 256 (order: 1, 12288 bytes, linear) [ 0.385743] UDP-Lite hash table entries: 256 (order: 1, 12288 bytes, li= near) [ 0.387545] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 0.388172] PCI: CLS 16 bytes [ 0.390311] clocksource: cr16: mask: 0xffffffff max_cycles: 0xffffffff,= max_idle_ns: 7645041786 ns [ 0.391141] clocksource: Switched to clocksource cr16 [ 0.391756] Enabling PDC chassis warnings support v0.05 [ 0.396076] workingset: timestamp_bits=3D14 max_order=3D17 bucket_order= =3D3 [ 0.404012] io scheduler mq-deadline registered [ 0.404324] io scheduler kyber registered [ 0.407216] PDC Stable Storage facility v0.30 [ 0.408521] sticore: STI GSC/PCI core graphics driver Version 0.9c [ 0.496987] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.511533] printk: legacy console [ttyS0] disabled [ 0.515146] 8:16:4: ttyS0 at MMIO 0xffd05800 (irq =3D 16, base_baud =3D= 454545) is a 16550A [ 0.518634] printk: legacy console [ttyS0] enabled [ 0.518634] printk: legacy console [ttyS0] enabled [ 0.519267] printk: legacy bootconsole [pdc0] disabled [ 0.519267] printk: legacy bootconsole [pdc0] disabled [ 0.528540] 8:0:63: ttyS1 at MMIO 0xfff83800 (irq =3D 18, base_baud =3D= 454545) is a 16550A [ 0.531850] serial 0000:00:02.0: enabling SERR and PARITY (0103 -> 0143= ) [ 0.535316] 0000:00:02.0: ttyS2 at I/O 0x10 (irq =3D 21, base_baud =3D = 115200) is a 16550A [ 0.539332] parport_init_chip: initialize bidirectional-mode [ 0.540300] parport0: PC-style at 0xffd02800, irq 17 [PCSPP,TRISTATE] [ 0.667976] loop: module loaded [ 0.669638] sym53c8xx 0000:00:00.0: enabling SERR and PARITY (0107 -> 0= 147) [ 0.672643] sym0: <895a> rev 0x0 at pci 0000:00:00.0 irq 19 [ 0.678720] sym0: PA-RISC Firmware, ID 7, Fast-40, LVD, parity checking [ 0.684386] sym0: SCSI BUS has been reset. [ 0.687904] scsi host0: sym-2.2.3 [ 3.783993] scsi 0:0:0:0: Direct-Access QEMU QEMU HARDDISK 2= .5+ PQ: 0 ANSI: 5 [ 3.784726] scsi target0:0:0: tagged command queuing enabled, command q= ueue depth 16. [ 3.785900] scsi target0:0:0: Beginning Domain Validation [ 3.788722] scsi target0:0:0: Domain Validation skipping write tests [ 3.788895] scsi target0:0:0: Ending Domain Validation [ 3.801756] scsi 0:0:2:0: CD-ROM QEMU QEMU CD-ROM 2= .5+ PQ: 0 ANSI: 5 [ 3.802043] scsi target0:0:2: tagged command queuing enabled, command q= ueue depth 16. [ 3.802392] scsi target0:0:2: Beginning Domain Validation [ 3.803995] scsi target0:0:2: Domain Validation skipping write tests [ 3.804138] scsi target0:0:2: Ending Domain Validation [ 3.816982] st: Version 20160209, fixed bufsize 32768, s/g segs 256 [ 3.820181] sr 0:0:2:0: Power-on or device reset occurred [ 3.822714] sr 0:0:2:0: [sr0] scsi3-mmc drive: 16x/50x cd/rw xa/form2 c= dda tray [ 3.823139] cdrom: Uniform CD-ROM driver Revision: 3.20 [ 3.824901] sd 0:0:0:0: Power-on or device reset occurred [ 3.828055] sd 0:0:0:0: [sda] 62914560 512-byte logical blocks: (32.2 G= B/30.0 GiB) [ 3.829255] sd 0:0:0:0: [sda] Write Protect is off [ 3.832789] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 3.833235] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled= , doesn't support DPO or FUA [ 3.833534] sr 0:0:2:0: Attached scsi generic sg1 type 5 [ 3.835756] tulip 0000:00:01.0: enabling SERR and PARITY (0103 -> 0143) [ 3.849999] tulip0: EEPROM default media type Autosense [ 3.850253] tulip0: Index #0 - Media MII (#11) described by a 21142 MII= PHY (3) block [ 3.853899] tulip0: MII transceiver #1 config 3100 status 702c adverti= sing 0501 [ 3.856302] sda: sda1 sda2 sda3 < sda5 sda6 > [ 3.870391] sd 0:0:0:0: [sda] Attached SCSI disk [ 3.871194] net eth0: Digital DS21142/43 Tulip rev 0 at Port 0x80, 52:5= 4:00:12:34:56, IRQ 20 [ 3.872279] e100: Intel(R) PRO/100 Network Driver [ 3.872486] e100: Copyright(c) 1999-2006 Intel Corporation [ 3.873836] e1000: Intel(R) PRO/1000 Network Driver [ 3.874067] e1000: Copyright (c) 1999-2006 Intel Corporation. [ 3.874406] e1000e: Intel(R) PRO/1000 Network Driver [ 3.874536] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 3.875010] igb: Intel(R) Gigabit Ethernet Network Driver [ 3.875212] igb: Copyright (c) 2007-2014 Intel Corporation. [ 3.875563] LASI 82596 driver - Revision: 1.30 [ 3.878798] HP SDC: No SDC found. [ 3.879000] HP SDC MLC: Registering the System Domain Controller's HIL = MLC. [ 3.884554] HP SDC MLC: Request for raw HIL ISR hook denied [ 3.906699] mousedev: PS/2 mouse device common for all mice [ 3.912379] rtc-generic rtc-generic: registered as rtc0 [ 3.913033] rtc-generic rtc-generic: setting system clock to 2024-02-02= T08:24:45 UTC (1706862285) [ 3.919114] hid: raw HID events driver (C) Jiri Kosina [ 3.919926] usbcore: registered new interface driver usbhid [ 3.920146] usbhid: USB HID core driver [ 3.921737] NET: Registered PF_PACKET protocol family [ 3.924787] Key type dns_resolver registered [ 4.092592] EXT4-fs (sda5): INFO: recovery required on readonly filesys= tem [ 4.092910] EXT4-fs (sda5): write access will be enabled during recover= y [ 4.200680] EXT4-fs (sda5): recovery complete [ 4.207887] EXT4-fs (sda5): mounted filesystem 0e24f05b-efd0-4f75-b1de-= 3309bd27dbd8 ro with ordered data mode. Quota mode: none. [ 4.209030] VFS: Mounted root (ext4 filesystem) readonly on device 8:5. [ 4.214953] devtmpfs: mounted [ 4.267329] Freeing unused kernel image (initmem) memory: 3072K [ 4.267826] Write protected read-only-after-init data: 2k [ 4.268225] Run /sbin/init as init process [ 4.305438] process 'usr/lib/systemd/systemd' started with executable s= tack [ 4.932357] systemd[1]: systemd 255.3-2 running in system mode (+PAM +A= UDIT +SELINUX +APPARMOR +IMA +SMACK -SECCOMP +GCRYPT -GNUTLS +OPENSSL +ACL= +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBF= DISK +PCRE2 -PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD= -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=3Dunified) [ 4.933521] systemd[1]: Detected architecture parisc. Welcome to Debian GNU/Linux trixie/sid! [...] root@debian:~# lscpu Architecture: parisc Byte Order: Big Endian CPU(s): 2 On-line CPU(s) list: 0,1 Model name: PA7300LC (PCX-L2) CPU family: PA-RISC 1.1e Model: 9000/778/B160L - Merlin L2 160 (9000/778/B160L) Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 2 BogoMIPS: 1771.11 root@debian:~# chcpu -d 1 [ 84.800279] Backtrace: [ 84.802648] [<10448744>] workqueue_offline_cpu+0x1d4/0x1dc [ 84.802648] [<10429db4>] cpuhp_invoke_callback+0xf8/0x200 [ 84.802648] [<1042a1d0>] cpuhp_thread_fun+0xb8/0x164 [ 84.802648] [<10452970>] smpboot_thread_fn+0x284/0x288 [ 84.802648] [<1044d8f4>] kthread+0x12c/0x13c [ 84.802648] [<1040201c>] ret_from_kernel_thread+0x1c/0x24 [ 84.802648] [ 84.802648] [ 84.802648] Kernel Fault: Code=3D26 (Data memory access rights trap) at= addr 00000000 [ 84.802648] CPU: 1 PID: 21 Comm: cpuhp/1 Not tainted 6.8.0-rc2-32bit+ #= 1294 [ 84.802648] Hardware name: 9000/778/B160L [ 84.802648] [ 84.802648] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [ 84.802648] PSW: 00000000000001001111111100001111 Not tainted [ 84.802648] r00-03 0004ff0f 11011540 10446d9c 11e00500 [ 84.802648] r04-07 11c0b800 00000002 11c0d000 00000001 [ 84.802648] r08-11 110194e4 11019168 00000000 00000004 [ 84.802648] r12-15 10c78800 00000612 f0028050 f0027fd8 [ 84.802648] r16-19 fffffffc fee01180 f0027ed8 01735000 [ 84.802648] r20-23 0000ffff 13ae1a00 13ae1a00 00000000 [ 84.802648] r24-27 11c0c580 11c0d004 11c0d000 10ceb968 [ 84.802648] r28-31 00000000 0000000e 11e00580 00000018 [ 84.802648] sr00-03 00000000 00000000 00000000 000004af [ 84.802648] sr04-07 00000000 00000000 00000000 00000000 [ 84.802648] [ 84.802648] IASQ: 00000000 00000000 IAOQ: 10446db4 10446db8 [ 84.802648] IIR: 0f80109c ISR: 00000000 IOR: 00000000 [ 84.802648] CPU: 1 CR30: 11dd1710 CR31: 00000000 [ 84.802648] ORIG_R28: 00000612 [ 84.802648] IAOQ[0]: wq_update_pod+0x98/0x14c [ 84.802648] IAOQ[1]: wq_update_pod+0x9c/0x14c [ 84.802648] RP(r2): wq_update_pod+0x80/0x14c [ 84.802648] Backtrace: [ 84.802648] [<10448744>] workqueue_offline_cpu+0x1d4/0x1dc [ 84.802648] [<10429db4>] cpuhp_invoke_callback+0xf8/0x200 [ 84.802648] [<1042a1d0>] cpuhp_thread_fun+0xb8/0x164 [ 84.802648] [<10452970>] smpboot_thread_fn+0x284/0x288 [ 84.802648] [<1044d8f4>] kthread+0x12c/0x13c [ 84.802648] [<1040201c>] ret_from_kernel_thread+0x1c/0x24 [ 84.802648] [ 84.802648] Kernel panic - not syncing: Kernel Fault