* Re: Why not use kvcalloc in bitmap_zalloc/bitmap_alloc? [not found] <BN7PR11MB26099D11661A8D4D968CC646FDA90@BN7PR11MB2609.namprd11.prod.outlook.com> @ 2022-02-03 15:48 ` andriy.shevchenko 2022-02-03 16:32 ` Yury Norov 0 siblings, 1 reply; 2+ messages in thread From: andriy.shevchenko @ 2022-02-03 15:48 UTC (permalink / raw) To: Ma, Jianpeng, Yury Norov; +Cc: Rasmus Villemoes, linux-kernel On Wed, Jan 13, 2021 at 01:02:30AM +0000, Ma, Jianpeng wrote: > Hi Andy: > Currently, I want to use bitmap_zalloc. But because I need large space(pages > 1024). So met the following message. > From the code, I know bitmap_zalloc use kmalloc. To fix this problem, I change the code use "kvcalloc(BITS_TO_LONGS(ns->pages_total), sizeof(unsigned long), GFP_KERNEL);" > Because you introduced bitmap_zalloc, so I wanted to know why use kvcalloc in bitmap_zalloc? Are there other considerations？ +Cc: maintainer and mailing list > 2114 Jan 12 08:44:46 ceph kernel: [19770.801510] Modules linked in: test_nvm(E+) bcache(E) crc64 btrfs blake2b_generic xor zstd_compress raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs intel_rapl_msr intel_rapl_common dax_pmem_compat device_dax nd_pmem dax_pmem_core nd_btt skx_edac ipmi_ssif x86_pkg_temp_thermal binfmt_misc intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper nls_iso8859_1 raplxfs intel_cstate libcrc32c input_leds efi_pstore ast drm_vram_helper drm_ttm_helper ttm drm_kms_helper cec drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt switchtec lpc_ich mei_me mei ioatdma acpi_ipmi ipmi_si ipmi_devintf ipmi_msghandler nfit acpi_pad acpi_power_meter mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid ixgbe megaraid_sas xfrm_algo i40e dca mdio nvme nvme_core ahci libahci wmi [last unloaded: bcache] > 2115 Jan 12 08:44:46 ceph kernel: [19770.801568] CPU: 72 PID: 74351 Comm: insmod Tainted: G E 5.10.0-rc5+ #1 > 2116 Jan 12 08:44:46 ceph kernel: [19770.801569] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019 > 2117 Jan 12 08:44:46 ceph kernel: [19770.801572] RIP: 0010:__alloc_pages_nodemask+0x297/0x330 > 2118 Jan 12 08:44:46 ceph kernel: [19770.801574] Code: 08 44 89 f9 44 89 ea 4c 89 f6 e8 54 96 fc ff e9 4c ff ff ff e8 fa 17 fc ff 48 89 c7 e9 b8 fe ff ff 41 81 e4 00 20 00 00 75 a7 <0f> 0b eb a3 31 c0 e9 1b fe ff ff 65 48 8b 04 25 c0 7b 01 00 8b 40 > 2119 Jan 12 08:44:46 ceph kernel: [19770.801575] RSP: 0018:ffffb2afcd4e39d8 EFLAGS: 00010246 > 2120 Jan 12 08:44:46 ceph kernel: [19770.801577] RAX: 0000000000000000 RBX: 0000000000000dc0 RCX: 0000000000000000 > 2121 Jan 12 08:44:46 ceph kernel: [19770.801578] RDX: 0000000000000001 RSI: 000000000000000b RDI: 0000000000040dc0 > 2122 Jan 12 08:44:46 ceph kernel: [19770.801579] RBP: ffffb2afcd4e3a30 R08: ffffffffb29c83c8 R09: 0000000000000000 > 2123 Jan 12 08:44:46 ceph kernel: [19770.801580] R10: 0000000000000000 R11: fefefefefefefeff R12: 0000000000000000 > 2124 Jan 12 08:44:46 ceph kernel: [19770.801581] R13: ffffffffb29c83c8 R14: 000000000000000b R15: 0000000000000000 > 2125 Jan 12 08:44:46 ceph kernel: [19770.801583] FS: 00007f24f731b540(0000) GS:ffff89abc1800000(0000) knlGS:0000000000000000 > 2126 Jan 12 08:44:46 ceph kernel: [19770.801584] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > 2127 Jan 12 08:44:46 ceph kernel: [19770.801585] CR2: 00007f24f6e9f450 CR3: 00000040fc79e004 CR4: 00000000007706e0 > 2128 Jan 12 08:44:46 ceph kernel: [19770.801586] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > 2129 Jan 12 08:44:46 ceph kernel: [19770.801587] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > 2130 Jan 12 08:44:46 ceph kernel: [19770.801588] PKRU: 55555554 > 2131 Jan 12 08:44:46 ceph kernel: [19770.801589] Call Trace: > 2132 Jan 12 08:44:46 ceph kernel: [19770.801598] alloc_pages_current+0x87/0xe0 > 2133 Jan 12 08:44:46 ceph kernel: [19770.801602] kmalloc_order+0x2c/0x90 > 2134 Jan 12 08:44:46 ceph kernel: [19770.801604] kmalloc_order_trace+0x1d/0x80 > 2135 Jan 12 08:44:46 ceph kernel: [19770.801608] __kmalloc+0x271/0x300 > 2136 Jan 12 08:44:46 ceph kernel: [19770.801612] bitmap_zalloc+0x1d/0x20 > 2137 Jan 12 08:44:46 ceph kernel: [19770.801630] bch_register_namespace+0x387/0x4e0 [bcache] > 2138 Jan 12 08:44:46 ceph kernel: [19770.801636] ? __wake_up_common_lock+0x8a/0xc0 > 2139 Jan 12 08:44:46 ceph kernel: [19770.801639] ? 0xffffffffc04e3000 > 2140 Jan 12 08:44:46 ceph kernel: [19770.801641] test_nvm_init+0x2f/0x1000 [test_nvm] > 2141 Jan 12 08:44:46 ceph kernel: [19770.801646] ? netlink_broadcast_filtered+0x13e/0x480 > 2142 Jan 12 08:44:46 ceph kernel: [19770.801649] ? _cond_resched+0x19/0x30 > 2143 Jan 12 08:44:46 ceph kernel: [19770.801651] ? unmap_kernel_range_noflush+0x2e7/0x360 > 2144 Jan 12 08:44:46 ceph kernel: [19770.801653] ? free_pcp_prepare+0x80/0x160 > 2145 Jan 12 08:44:46 ceph kernel: [19770.801654] ? 0xffffffffc04e3000 > 2146 Jan 12 08:44:46 ceph kernel: [19770.801658] do_one_initcall+0x48/0x1d0 > 2147 Jan 12 08:44:46 ceph kernel: [19770.801659] ? _cond_resched+0x19/0x30 > 2148 Jan 12 08:44:46 ceph kernel: [19770.801661] ? kmem_cache_alloc_trace+0x153/0x2b0 > 2149 Jan 12 08:44:46 ceph kernel: [19770.801664] do_init_module+0x62/0x240 > 2150 Jan 12 08:44:46 ceph kernel: [19770.801666] load_module+0x28a0/0x2c50 > 2151 Jan 12 08:44:46 ceph kernel: [19770.801672] ? security_kernel_post_read_file+0x5c/0x70 > 2152 Jan 12 08:44:46 ceph kernel: [19770.801674] __do_sys_finit_module+0xc2/0x120 > 2153 Jan 12 08:44:46 ceph kernel: [19770.801676] ? __do_sys_finit_module+0xc2/0x120 -- With Best Regards, Andy Shevchenko ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Why not use kvcalloc in bitmap_zalloc/bitmap_alloc? 2022-02-03 15:48 ` Why not use kvcalloc in bitmap_zalloc/bitmap_alloc? andriy.shevchenko @ 2022-02-03 16:32 ` Yury Norov 0 siblings, 0 replies; 2+ messages in thread From: Yury Norov @ 2022-02-03 16:32 UTC (permalink / raw) To: Ma, Jianpeng, andriy.shevchenko@linux.intel.com Cc: Rasmus Villemoes, linux-kernel Hi Jianpeng, I feel a bit out of context. Can you please describe your problem in greater details? If you already have a solution - can you attach it to your email? If I understand correctly, your bitmap size exceeded the kmalloc() limit. In that case, I would suggest adding the bitmap_valloc() to the API. Thanks, Yury On Thu, Feb 3, 2022 at 7:49 AM andriy.shevchenko@linux.intel.com <andriy.shevchenko@linux.intel.com> wrote: > > On Wed, Jan 13, 2021 at 01:02:30AM +0000, Ma, Jianpeng wrote: > > Hi Andy: > > Currently, I want to use bitmap_zalloc. But because I need large space(pages > 1024). So met the following message. > > From the code, I know bitmap_zalloc use kmalloc. To fix this problem, I change the code use "kvcalloc(BITS_TO_LONGS(ns->pages_total), sizeof(unsigned long), GFP_KERNEL);" > > Because you introduced bitmap_zalloc, so I wanted to know why use kvcalloc in bitmap_zalloc? Are there other considerations？ > > +Cc: maintainer and mailing list > > > 2114 Jan 12 08:44:46 ceph kernel: [19770.801510] Modules linked in: test_nvm(E+) bcache(E) crc64 btrfs blake2b_generic xor zstd_compress raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs intel_rapl_msr intel_rapl_common dax_pmem_compat device_dax nd_pmem dax_pmem_core nd_btt skx_edac ipmi_ssif x86_pkg_temp_thermal binfmt_misc intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper nls_iso8859_1 raplxfs intel_cstate libcrc32c input_leds efi_pstore ast drm_vram_helper drm_ttm_helper ttm drm_kms_helper cec drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt switchtec lpc_ich mei_me mei ioatdma acpi_ipmi ipmi_si ipmi_devintf ipmi_msghandler nfit acpi_pad acpi_power_meter mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid ixgbe megaraid_sas xfrm_algo i40e dca mdio nvme nvme_core ahci libahci wmi [last unloaded: bcache] > > 2115 Jan 12 08:44:46 ceph kernel: [19770.801568] CPU: 72 PID: 74351 Comm: insmod Tainted: G E 5.10.0-rc5+ #1 > > 2116 Jan 12 08:44:46 ceph kernel: [19770.801569] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019 > > 2117 Jan 12 08:44:46 ceph kernel: [19770.801572] RIP: 0010:__alloc_pages_nodemask+0x297/0x330 > > 2118 Jan 12 08:44:46 ceph kernel: [19770.801574] Code: 08 44 89 f9 44 89 ea 4c 89 f6 e8 54 96 fc ff e9 4c ff ff ff e8 fa 17 fc ff 48 89 c7 e9 b8 fe ff ff 41 81 e4 00 20 00 00 75 a7 <0f> 0b eb a3 31 c0 e9 1b fe ff ff 65 48 8b 04 25 c0 7b 01 00 8b 40 > > 2119 Jan 12 08:44:46 ceph kernel: [19770.801575] RSP: 0018:ffffb2afcd4e39d8 EFLAGS: 00010246 > > 2120 Jan 12 08:44:46 ceph kernel: [19770.801577] RAX: 0000000000000000 RBX: 0000000000000dc0 RCX: 0000000000000000 > > 2121 Jan 12 08:44:46 ceph kernel: [19770.801578] RDX: 0000000000000001 RSI: 000000000000000b RDI: 0000000000040dc0 > > 2122 Jan 12 08:44:46 ceph kernel: [19770.801579] RBP: ffffb2afcd4e3a30 R08: ffffffffb29c83c8 R09: 0000000000000000 > > 2123 Jan 12 08:44:46 ceph kernel: [19770.801580] R10: 0000000000000000 R11: fefefefefefefeff R12: 0000000000000000 > > 2124 Jan 12 08:44:46 ceph kernel: [19770.801581] R13: ffffffffb29c83c8 R14: 000000000000000b R15: 0000000000000000 > > 2125 Jan 12 08:44:46 ceph kernel: [19770.801583] FS: 00007f24f731b540(0000) GS:ffff89abc1800000(0000) knlGS:0000000000000000 > > 2126 Jan 12 08:44:46 ceph kernel: [19770.801584] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > 2127 Jan 12 08:44:46 ceph kernel: [19770.801585] CR2: 00007f24f6e9f450 CR3: 00000040fc79e004 CR4: 00000000007706e0 > > 2128 Jan 12 08:44:46 ceph kernel: [19770.801586] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > 2129 Jan 12 08:44:46 ceph kernel: [19770.801587] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > 2130 Jan 12 08:44:46 ceph kernel: [19770.801588] PKRU: 55555554 > > 2131 Jan 12 08:44:46 ceph kernel: [19770.801589] Call Trace: > > 2132 Jan 12 08:44:46 ceph kernel: [19770.801598] alloc_pages_current+0x87/0xe0 > > 2133 Jan 12 08:44:46 ceph kernel: [19770.801602] kmalloc_order+0x2c/0x90 > > 2134 Jan 12 08:44:46 ceph kernel: [19770.801604] kmalloc_order_trace+0x1d/0x80 > > 2135 Jan 12 08:44:46 ceph kernel: [19770.801608] __kmalloc+0x271/0x300 > > 2136 Jan 12 08:44:46 ceph kernel: [19770.801612] bitmap_zalloc+0x1d/0x20 > > 2137 Jan 12 08:44:46 ceph kernel: [19770.801630] bch_register_namespace+0x387/0x4e0 [bcache] > > 2138 Jan 12 08:44:46 ceph kernel: [19770.801636] ? __wake_up_common_lock+0x8a/0xc0 > > 2139 Jan 12 08:44:46 ceph kernel: [19770.801639] ? 0xffffffffc04e3000 > > 2140 Jan 12 08:44:46 ceph kernel: [19770.801641] test_nvm_init+0x2f/0x1000 [test_nvm] > > 2141 Jan 12 08:44:46 ceph kernel: [19770.801646] ? netlink_broadcast_filtered+0x13e/0x480 > > 2142 Jan 12 08:44:46 ceph kernel: [19770.801649] ? _cond_resched+0x19/0x30 > > 2143 Jan 12 08:44:46 ceph kernel: [19770.801651] ? unmap_kernel_range_noflush+0x2e7/0x360 > > 2144 Jan 12 08:44:46 ceph kernel: [19770.801653] ? free_pcp_prepare+0x80/0x160 > > 2145 Jan 12 08:44:46 ceph kernel: [19770.801654] ? 0xffffffffc04e3000 > > 2146 Jan 12 08:44:46 ceph kernel: [19770.801658] do_one_initcall+0x48/0x1d0 > > 2147 Jan 12 08:44:46 ceph kernel: [19770.801659] ? _cond_resched+0x19/0x30 > > 2148 Jan 12 08:44:46 ceph kernel: [19770.801661] ? kmem_cache_alloc_trace+0x153/0x2b0 > > 2149 Jan 12 08:44:46 ceph kernel: [19770.801664] do_init_module+0x62/0x240 > > 2150 Jan 12 08:44:46 ceph kernel: [19770.801666] load_module+0x28a0/0x2c50 > > 2151 Jan 12 08:44:46 ceph kernel: [19770.801672] ? security_kernel_post_read_file+0x5c/0x70 > > 2152 Jan 12 08:44:46 ceph kernel: [19770.801674] __do_sys_finit_module+0xc2/0x120 > > 2153 Jan 12 08:44:46 ceph kernel: [19770.801676] ? __do_sys_finit_module+0xc2/0x120 > > -- > With Best Regards, > Andy Shevchenko > > ^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <BN7PR11MB26099D11661A8D4D968CC646FDA90@BN7PR11MB2609.namprd11.prod.outlook.com>
2022-02-03 15:48 ` Why not use kvcalloc in bitmap_zalloc/bitmap_alloc? andriy.shevchenko
2022-02-03 16:32 ` Yury Norov
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