[ 5066.279543] ============================================================================= [ 5066.288672] BUG zspage-zram0 (Tainted: G S B W L ): Objects remaining on __kmem_cache_shutdown() [ 5066.299449] ----------------------------------------------------------------------------- [ 5066.299449] [ 5066.310226] Object 0x000000003141ad3c @offset=840 [ 5066.315476] Object 0x000000008aac8ad7 @offset=1848 [ 5066.320823] Slab 0x00000000cce340bd objects=73 used=2 fp=0x000000003f8c10b1 flags=0x17ffffc0000200(workingset|node=0|zone=2|lastcpupid=0x1fffff) [ 5066.335286] ------------[ cut here ]------------ [ 5066.340439] WARNING: CPU: 5 PID: 2847 at mm/slub.c:1171 __slab_err.part.0+0x19/0x20 [ 5066.348985] Modules linked in: zram 842_decompress lz4hc_compress 842_compress lz4_compress zstd_compress tls rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace nfs_localio netfs rfkill intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common i10nm_edac skx_edac_common nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm mgag200 dax_hmem irqbypass cxl_acpi rapl cxl_port iTCO_wdt ipmi_ssif intel_cstate cdc_ether iTCO_vendor_support cxl_core usbnet mei_me mii i2c_algo_bit isst_if_mbox_pci intel_uncore einj isst_if_mmio intel_th_gth i2c_i801 ioatdma mei pcspkr intel_th_pci isst_if_common i2c_smbus intel_vsec intel_th dca intel_pch_thermal ipmi_si acpi_power_meter acpi_ipmi ipmi_devintf ipmi_msghandler acpi_pad sg loop fuse xfs sd_mod ahci libahci tg3 libata ghash_clmulni_intel wmi sunrpc dm_mirror dm_region_hash dm_log dm_multipath dm_mod nfnetlink [last unloaded: brd] [ 5066.440862] CPU: 5 UID: 0 PID: 2847 Comm: bash Tainted: G S B W L 6.17.0-rc2+ #1 PREEMPT(voluntary) [ 5066.452123] Tainted: [S]=CPU_OUT_OF_SPEC, [B]=BAD_PAGE, [W]=WARN, [L]=SOFTLOCKUP [ 5066.460379] Hardware name: Lenovo ThinkSystem SR650 V2/7Z73CTO1WW, BIOS AFE118M-1.32 06/29/2022 [ 5066.470089] RIP: 0010:__slab_err.part.0+0x19/0x20 [ 5066.475330] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 e8 66 fc ff ff be 01 00 00 00 bf 05 00 00 00 e8 f7 83 10 00 <0f> 0b e9 10 c2 e7 00 48 c7 c7 3c 20 2f aa c6 05 6d 80 f3 01 01 e8 [ 5066.496286] RSP: 0018:ff7690a584a23c70 EFLAGS: 00010046 [ 5066.502116] RAX: 0000000000000000 RBX: ff462f22566d3700 RCX: 0000000000000027 [ 5066.510081] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000005 [ 5066.518046] RBP: ff462f22566d3700 R08: 0000000000000000 R09: ff7690a584a23af8 [ 5066.526009] R10: ffffffffaa922e28 R11: 0000000000000003 R12: ff7690a584a23c90 [ 5066.533975] R13: ff462f2260d55000 R14: ffdd3f4b84835540 R15: ff462f2256413900 [ 5066.541940] FS: 00007f9902945740(0000) GS:ff462f25c45fb000(0000) knlGS:0000000000000000 [ 5066.550971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5066.557383] CR2: 000055b941e4ad98 CR3: 0000000109ef6001 CR4: 0000000000773ef0 [ 5066.565346] PKRU: 55555554 [ 5066.568364] Call Trace: [ 5066.571092] <TASK> [ 5066.573433] __kmem_cache_shutdown.cold+0x1c/0x46 [ 5066.578686] kmem_cache_destroy+0x3f/0x150 [ 5066.583257] zs_destroy_pool+0xd0/0xf0 [ 5066.587443] zram_reset_device+0xdb/0x1c0 [zram] [ 5066.592597] reset_store+0xa8/0x110 [zram] [ 5066.597170] kernfs_fop_write_iter+0x13b/0x1f0 [ 5066.602130] vfs_write+0x25d/0x450 [ 5066.605926] ksys_write+0x6b/0xe0 [ 5066.609625] do_syscall_64+0x7f/0x980 [ 5066.613703] ? do_syscall_64+0xb1/0x980 [ 5066.617985] ? do_user_addr_fault+0x206/0x690 [ 5066.622847] ? clear_bhb_loop+0x50/0xa0 [ 5066.627127] ? clear_bhb_loop+0x50/0xa0 [ 5066.631408] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 5066.637047] RIP: 0033:0x7f9902a41894 [ 5066.641034] Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d 35 d8 0d 00 00 74 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 48 83 ec 28 48 89 54 24 18 48 [ 5066.661991] RSP: 002b:00007fff33d6ab28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 5066.670438] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f9902a41894 [ 5066.678403] RDX: 0000000000000002 RSI: 0000556ee81a7570 RDI: 0000000000000001 [ 5066.686368] RBP: 0000556ee81a7570 R08: 0000000000000073 R09: 00000000ffffffff [ 5066.694333] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 [ 5066.702296] R13: 00007f9902b185c0 R14: 0000000000000002 R15: 00007f9902b15f00 [ 5066.710260] </TASK> [ 5066.712698] ---[ end trace 0000000000000000 ]--- [ 5066.717866] ------------[ cut here ]------------ [ 5066.723022] kmem_cache_destroy zspage-zram0: Slab cache still has objects when called from zs_destroy_pool+0xd0/0xf0 [ 5066.723027] WARNING: CPU: 5 PID: 2847 at mm/slab_common.c:525 kmem_cache_destroy+0x13d/0x150 [ 5066.744196] Modules linked in: zram 842_decompress lz4hc_compress 842_compress lz4_compress zstd_compress tls rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace nfs_localio netfs rfkill intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common i10nm_edac skx_edac_common nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm mgag200 dax_hmem irqbypass cxl_acpi rapl cxl_port iTCO_wdt ipmi_ssif intel_cstate cdc_ether iTCO_vendor_support cxl_core usbnet mei_me mii i2c_algo_bit isst_if_mbox_pci intel_uncore einj isst_if_mmio intel_th_gth i2c_i801 ioatdma mei pcspkr intel_th_pci isst_if_common i2c_smbus intel_vsec intel_th dca intel_pch_thermal ipmi_si acpi_power_meter acpi_ipmi ipmi_devintf ipmi_msghandler acpi_pad sg loop fuse xfs sd_mod ahci libahci tg3 libata ghash_clmulni_intel wmi sunrpc dm_mirror dm_region_hash dm_log dm_multipath dm_mod nfnetlink [last unloaded: brd] [ 5066.836081] CPU: 5 UID: 0 PID: 2847 Comm: bash Tainted: G S B W L 6.17.0-rc2+ #1 PREEMPT(voluntary) [ 5066.847347] Tainted: [S]=CPU_OUT_OF_SPEC, [B]=BAD_PAGE, [W]=WARN, [L]=SOFTLOCKUP [ 5066.855606] Hardware name: Lenovo ThinkSystem SR650 V2/7Z73CTO1WW, BIOS AFE118M-1.32 06/29/2022 [ 5066.865318] RIP: 0010:kmem_cache_destroy+0x13d/0x150 [ 5066.870862] Code: 00 85 ed 74 92 eb b1 e8 91 38 df ff eb 8f 48 8b 53 60 48 8b 4c 24 10 48 c7 c6 b0 03 c8 a9 48 c7 c7 60 35 25 aa e8 33 b6 d2 ff <0f> 0b e9 0e ff ff ff e9 47 f8 a9 00 0f 1f 80 00 00 00 00 90 90 90 [ 5066.891823] RSP: 0018:ff7690a584a23ce0 EFLAGS: 00010286 [ 5066.897659] RAX: 0000000000000000 RBX: ff462f2256413900 RCX: 0000000000000027 [ 5066.905629] RDX: ff462f256fb5c188 RSI: 0000000000000001 RDI: ff462f256fb5c180 [ 5066.913595] RBP: 0000000000000001 R08: 0000000000000000 R09: ff7690a584a23b58 [ 5066.921555] R10: ffffffffaa922e28 R11: 0000000000000003 R12: ff462f22a1e2c600 [ 5066.929522] R13: 00000000000000ff R14: ff462f23185d1000 R15: ff462f2255ed6320 [ 5066.937480] FS: 00007f9902945740(0000) GS:ff462f25c45fb000(0000) knlGS:0000000000000000 [ 5066.946514] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5066.952930] CR2: 000055b941e4ad98 CR3: 0000000109ef6001 CR4: 0000000000773ef0 [ 5066.960896] PKRU: 55555554 [ 5066.963918] Call Trace: [ 5066.966649] <TASK> [ 5066.968994] zs_destroy_pool+0xd0/0xf0 [ 5066.973183] zram_reset_device+0xdb/0x1c0 [zram] [ 5066.978341] reset_store+0xa8/0x110 [zram] [ 5066.982919] kernfs_fop_write_iter+0x13b/0x1f0 [ 5066.987881] vfs_write+0x25d/0x450 [ 5066.991682] ksys_write+0x6b/0xe0 [ 5066.995384] do_syscall_64+0x7f/0x980 [ 5066.999475] ? do_syscall_64+0xb1/0x980 [ 5067.003758] ? do_user_addr_fault+0x206/0x690 [ 5067.008613] ? clear_bhb_loop+0x50/0xa0 [ 5067.012897] ? clear_bhb_loop+0x50/0xa0 [ 5067.017181] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 5067.022823] RIP: 0033:0x7f9902a41894 [ 5067.026814] Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d 35 d8 0d 00 00 74 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 48 83 ec 28 48 89 54 24 18 48 [ 5067.047765] RSP: 002b:00007fff33d6ab28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 5067.056219] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f9902a41894 [ 5067.064187] RDX: 0000000000000002 RSI: 0000556ee81a7570 RDI: 0000000000000001 [ 5067.072155] RBP: 0000556ee81a7570 R08: 0000000000000073 R09: 00000000ffffffff [ 5067.080124] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 [ 5067.088093] R13: 00007f9902b185c0 R14: 0000000000000002 R15: 00007f9902b15f00 [ 5067.096060] </TASK> [ 5067.098500] ---[ end trace 0000000000000000 ]--- On Tue, Aug 19, 2025 at 10:20 PM Changhui Zhong <czhong@xxxxxxxxxx> wrote: > > Hello, > > the following bug and warning was triggered, > please help check and let me know if you need any info/test, thanks. > > repo：https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > branch：master > INFO: HEAD of cloned kernel： > commit be48bcf004f9d0c9207ff21d0edb3b42f253829e > Merge: 074e461d9ed5 74857fdc5dd2 > Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Date: Mon Aug 18 09:17:42 2025 -0700 > > Merge tag 'for-6.17-rc2-tag' of > git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux > > reproducer: > # modprobe zram > # zramctl --find --size 4G --algorithm zstd > # fio --name=test \ > --filename=/dev/zram0 \ > --rw=randrw \ > --bs=4k \ > --ioengine=libaio \ > --iodepth=16 \ > --numjobs=4 \ > --runtime=60 \ > --time_based \ > --group_reporting \ > --direct=1 > # echo 1 > /sys/block/zram0/reset > > dmesg log: > [ 4861.143371] zsmalloc: Class-80 fullness group 1 is not empty > [ 4861.149696] zsmalloc: Class-112 fullness group 1 is not empty > [ 4861.156121] zsmalloc: Class-144 fullness group 1 is not empty > [ 4861.162541] zsmalloc: Class-160 fullness group 1 is not empty > [ 4861.168963] zsmalloc: Class-176 fullness group 1 is not empty > [ 4861.175379] zsmalloc: Class-192 fullness group 1 is not empty > [ 4861.181797] zsmalloc: Class-224 fullness group 1 is not empty > [ 4861.205986] ============================================================================= > [ 4861.215123] BUG zs_handle-zram0 (Tainted: G S ): > Objects remaining on __kmem_cache_shutdown() > [ 4861.226193] ----------------------------------------------------------------------------- > [ 4861.226193] > [ 4861.236981] Object 0x00000000364c25c1 @offset=3336 > [ 4861.242331] Slab 0x0000000040c2ee59 objects=512 used=1 > fp=0x00000000ad7304d7 > flags=0x17ffffc0000200(workingset|node=0|zone=2|lastcpupid=0x1fffff) > [ 4861.256893] Disabling lock debugging due to kernel taint > [ 4861.262831] ------------[ cut here ]------------ > [ 4861.267982] WARNING: CPU: 23 PID: 2847 at mm/slub.c:1171 > __slab_err.part.0+0x19/0x20 > [ 4861.276635] Modules linked in: zram 842_decompress lz4hc_compress > 842_compress lz4_compress zstd_compress tls rpcsec_gss_krb5 > auth_rpcgss nfsv4 dns_resolver nfs lockd grace nfs_localio netfs > rfkill intel_rapl_msr intel_rapl_common intel_uncore_frequency > intel_uncore_frequency_common i10nm_edac skx_edac_common nfit > libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm > mgag200 dax_hmem irqbypass cxl_acpi rapl cxl_port iTCO_wdt ipmi_ssif > intel_cstate cdc_ether iTCO_vendor_support cxl_core usbnet mei_me mii > i2c_algo_bit isst_if_mbox_pci intel_uncore einj isst_if_mmio > intel_th_gth i2c_i801 ioatdma mei pcspkr intel_th_pci isst_if_common > i2c_smbus intel_vsec intel_th dca intel_pch_thermal ipmi_si > acpi_power_meter acpi_ipmi ipmi_devintf ipmi_msghandler acpi_pad sg > loop fuse xfs sd_mod ahci libahci tg3 libata ghash_clmulni_intel wmi > sunrpc dm_mirror dm_region_hash dm_log dm_multipath dm_mod nfnetlink > [last unloaded: brd] > [ 4861.368551] CPU: 23 UID: 0 PID: 2847 Comm: bash Tainted: G S B > 6.17.0-rc2+ #1 PREEMPT(voluntary) > [ 4861.379913] Tainted: [S]=CPU_OUT_OF_SPEC, [B]=BAD_PAGE > [ 4861.385639] Hardware name: Lenovo ThinkSystem SR650 V2/7Z73CTO1WW, > BIOS AFE118M-1.32 06/29/2022 > [ 4861.395350] RIP: 0010:__slab_err.part.0+0x19/0x20 > [ 4861.400604] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 > 90 0f 1f 44 00 00 e8 66 fc ff ff be 01 00 00 00 bf 05 00 00 00 e8 f7 > 83 10 00 <0f> 0b e9 10 c2 e7 00 48 c7 c7 3c 20 2f aa c6 05 6d 80 f3 01 > 01 e8 > [ 4861.421562] RSP: 0018:ff7690a584a23c70 EFLAGS: 00010046 > [ 4861.427387] RAX: 0000000000000000 RBX: ffdd3f4b88085780 RCX: 0000000000000027 > [ 4861.435345] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ff462f256ffdc180 > [ 4861.443310] RBP: ff462f22566d3740 R08: 0000000000000000 R09: ff7690a584a23ae8 > [ 4861.451276] R10: ffffffffaa922e28 R11: 0000000000000003 R12: ff7690a584a23c90 > [ 4861.459242] R13: ff462f224a3f5000 R14: ffdd3f4b8428fd40 R15: ff462f2256412a00 > [ 4861.467207] FS: 00007f9902945740(0000) GS:ff462f25c4a7b000(0000) > knlGS:0000000000000000 > [ 4861.476230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 4861.482646] CR2: 0000556ee84d1f90 CR3: 0000000109ef6002 CR4: 0000000000773ef0 > [ 4861.490613] PKRU: 55555554 > [ 4861.493624] Call Trace: > [ 4861.496354] <TASK> > [ 4861.498686] __kmem_cache_shutdown.cold+0x1c/0x46 > [ 4861.503941] kmem_cache_destroy+0x3f/0x150 > [ 4861.508517] zs_destroy_pool+0xc4/0xf0 > [ 4861.512706] zram_reset_device+0xdb/0x1c0 [zram] > [ 4861.517866] reset_store+0xa8/0x110 [zram] > [ 4861.522443] kernfs_fop_write_iter+0x13b/0x1f0 > [ 4861.527406] vfs_write+0x25d/0x450 > [ 4861.531205] ksys_write+0x6b/0xe0 > [ 4861.534907] do_syscall_64+0x7f/0x980 > [ 4861.538996] ? do_syscall_64+0xb1/0x980 > [ 4861.543279] ? do_user_addr_fault+0x206/0x690 > [ 4861.548143] ? clear_bhb_loop+0x50/0xa0 > [ 4861.552426] ? clear_bhb_loop+0x50/0xa0 > [ 4861.556706] entry_SYSCALL_64_after_hwframe+0x76/0x7e > [ 4861.562345] RIP: 0033:0x7f9902a41894 > [ 4861.566328] Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f > 84 00 00 00 00 00 f3 0f 1e fa 80 3d 35 d8 0d 00 00 74 13 b8 01 00 00 > 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 48 83 ec 28 48 89 54 24 > 18 48 > [ 4861.587279] RSP: 002b:00007fff33d6ab28 EFLAGS: 00000202 ORIG_RAX: > 0000000000000001 > [ 4861.595729] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f9902a41894 > [ 4861.603693] RDX: 0000000000000002 RSI: 0000556ee81a7570 RDI: 0000000000000001 > [ 4861.611659] RBP: 0000556ee81a7570 R08: 0000000000000073 R09: 00000000ffffffff > [ 4861.619616] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 > [ 4861.627580] R13: 00007f9902b185c0 R14: 0000000000000002 R15: 00007f9902b15f00 > [ 4861.635548] </TASK> > [ 4861.637985] ---[ end trace 0000000000000000 ]--- > > Best Regards, > Changhui
