On 2024/2/23 17:26, Tetsuo Handa wrote: > On 2024/02/23 14:23, Chengming Zhou wrote: >> Tetsuo, could you please check if the config has CONFIG_COMPACTION enabled? > > Yes, CONFIG_COMPACTION is enabled. > > Also, I can observe this problem with 6.8.0-rc5-next-20240223. Ok, from the report it seems UAF of the zspage? which is allocated from slab. I have no idea of the reason. Maybe it's better to run a bisect, as suggested by Sergey. Thanks. > > ---------------------------------------- > [ 54.589642][ T157] ===================================================== > [ 54.603721][ T157] BUG: KMSAN: use-after-free in obj_malloc+0x6cc/0x7b0 > [ 54.608092][ T157] obj_malloc+0x6cc/0x7b0 > [ 54.610904][ T157] zs_malloc+0xda2/0x12d0 > [ 54.613688][ T157] zs_zpool_malloc+0xa5/0x1b0 > [ 54.619163][ T157] zpool_malloc+0x113/0x150 > [ 54.624449][ T157] zswap_compress+0x69b/0xbd0 > [ 54.629904][ T157] zswap_store+0x1f24/0x2d00 > [ 54.635026][ T157] swap_writepage+0x15b/0x4f0 > [ 54.640023][ T157] pageout+0x3d4/0xeb0 > [ 54.644699][ T157] shrink_folio_list+0x4d7f/0x7480 > [ 54.649867][ T157] evict_folios+0x2160/0x52c0 > [ 54.654872][ T157] try_to_shrink_lruvec+0x1cb/0x460 > [ 54.660074][ T157] shrink_one+0x72d/0xeb0 > [ 54.664922][ T157] shrink_many+0x70d/0x10c0 > [ 54.669849][ T157] lru_gen_shrink_node+0x832/0xd10 > [ 54.675110][ T157] shrink_node+0x13a/0x1dd0 > [ 54.680026][ T157] balance_pgdat+0x1556/0x2740 > [ 54.685032][ T157] kswapd+0x50d/0x870 > [ 54.689643][ T157] kthread+0x485/0x600 > [ 54.694432][ T157] ret_from_fork+0xfa/0x140 > [ 54.699305][ T157] ret_from_fork_asm+0x11/0x20 > [ 54.704295][ T157] > [ 54.707905][ T157] Uninit was stored to memory at: > [ 54.712837][ T157] obj_malloc+0x70a/0x7b0 > [ 54.717434][ T157] zs_malloc+0xda2/0x12d0 > [ 54.722009][ T157] zs_zpool_malloc+0xa5/0x1b0 > [ 54.726806][ T157] zpool_malloc+0x113/0x150 > [ 54.731507][ T157] zswap_compress+0x69b/0xbd0 > [ 54.736299][ T157] zswap_store+0x1f24/0x2d00 > [ 54.741081][ T157] swap_writepage+0x15b/0x4f0 > [ 54.745880][ T157] pageout+0x3d4/0xeb0 > [ 54.750386][ T157] shrink_folio_list+0x4d7f/0x7480 > [ 54.755378][ T157] evict_folios+0x2160/0x52c0 > [ 54.760153][ T157] try_to_shrink_lruvec+0x1cb/0x460 > [ 54.765223][ T157] shrink_one+0x72d/0xeb0 > [ 54.769870][ T157] shrink_many+0x70d/0x10c0 > [ 54.774445][ T157] lru_gen_shrink_node+0x832/0xd10 > [ 54.779221][ T157] shrink_node+0x13a/0x1dd0 > [ 54.783965][ T157] balance_pgdat+0x1556/0x2740 > [ 54.788702][ T157] kswapd+0x50d/0x870 > [ 54.793073][ T157] kthread+0x485/0x600 > [ 54.798253][ T157] ret_from_fork+0xfa/0x140 > [ 54.804206][ T157] ret_from_fork_asm+0x11/0x20 > [ 54.809016][ T157] > [ 54.812652][ T157] Uninit was created at: > [ 54.817314][ T157] free_unref_page_prepare+0x130/0xfc0 > [ 54.822499][ T157] free_unref_page_list+0x13f/0x1130 > [ 54.828207][ T157] shrink_folio_list+0x713e/0x7480 > [ 54.834143][ T157] evict_folios+0x2160/0x52c0 > [ 54.839358][ T157] try_to_shrink_lruvec+0x1cb/0x460 > [ 54.844628][ T157] shrink_one+0x72d/0xeb0 > [ 54.849436][ T157] shrink_many+0x70d/0x10c0 > [ 54.854310][ T157] lru_gen_shrink_node+0x832/0xd10 > [ 54.859337][ T157] shrink_node+0x13a/0x1dd0 > [ 54.864076][ T157] shrink_zones+0x787/0x1530 > [ 54.868808][ T157] do_try_to_free_pages+0x2ac/0x16a0 > [ 54.873865][ T157] try_to_free_pages+0xddb/0x19b0 > [ 54.878795][ T157] __alloc_pages_slowpath+0x1a05/0x2d00 > [ 54.883978][ T157] __alloc_pages+0xc6c/0x1040 > [ 54.888802][ T157] alloc_pages_mpol+0x477/0xc40 > [ 54.893629][ T157] alloc_pages+0x224/0x240 > [ 54.898092][ T157] pipe_write+0xae5/0x2bd0 > [ 54.902702][ T157] vfs_write+0xfb9/0x1b90 > [ 54.907117][ T157] ksys_write+0x275/0x500 > [ 54.911612][ T157] __x64_sys_write+0xdf/0x120 > [ 54.916287][ T157] do_syscall_64+0xd5/0x1c0 > [ 54.920782][ T157] entry_SYSCALL_64_after_hwframe+0x62/0x6a > [ 54.925972][ T157] > [ 54.929436][ T157] CPU: 4 PID: 157 Comm: kswapd1 Not tainted 6.8.0-rc5-next-20240223 #1 > [ 54.937592][ T157] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 > [ 54.946147][ T157] ===================================================== > [ 54.951772][ T157] Disabling lock debugging due to kernel taint > [ 54.957040][ T157] Kernel panic - not syncing: kmsan.panic set ... > [ 54.962443][ T157] CPU: 4 PID: 157 Comm: kswapd1 Tainted: G B 6.8.0-rc5-next-20240223 #1 > [ 54.971295][ T157] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 > [ 54.979856][ T157] Call Trace: > [ 54.983760][ T157] <TASK> > [ 54.987503][ T157] dump_stack_lvl+0x24b/0x300 > [ 54.992068][ T157] dump_stack+0x29/0x30 > [ 54.996373][ T157] panic+0x4ed/0xca0 > [ 55.000656][ T157] kmsan_report+0x2d1/0x2e0 > [ 55.005155][ T157] ? kmem_cache_alloc+0x707/0xf50 > [ 55.009909][ T157] ? kmsan_internal_poison_memory+0x7d/0x90 > [ 55.015056][ T157] ? kmsan_internal_poison_memory+0x49/0x90 > [ 55.020253][ T157] ? kmsan_slab_alloc+0xdf/0x160 > [ 55.024995][ T157] ? __msan_warning+0x91/0x120 > [ 55.029604][ T157] ? obj_malloc+0x6cc/0x7b0 > [ 55.034166][ T157] ? zs_malloc+0xda2/0x12d0 > [ 55.038692][ T157] ? zs_zpool_malloc+0xa5/0x1b0 > [ 55.043342][ T157] ? zpool_malloc+0x113/0x150 > [ 55.047909][ T157] ? zswap_compress+0x69b/0xbd0 > [ 55.052576][ T157] ? zswap_store+0x1f24/0x2d00 > [ 55.057213][ T157] ? swap_writepage+0x15b/0x4f0 > [ 55.061836][ T157] ? pageout+0x3d4/0xeb0 > [ 55.066216][ T157] ? shrink_folio_list+0x4d7f/0x7480 > [ 55.071083][ T157] ? evict_folios+0x2160/0x52c0 > [ 55.075734][ T157] ? try_to_shrink_lruvec+0x1cb/0x460 > [ 55.080625][ T157] ? shrink_one+0x72d/0xeb0 > [ 55.085139][ T157] ? shrink_many+0x70d/0x10c0 > [ 55.089752][ T157] ? lru_gen_shrink_node+0x832/0xd10 > [ 55.094614][ T157] ? shrink_node+0x13a/0x1dd0 > [ 55.099188][ T157] ? balance_pgdat+0x1556/0x2740 > [ 55.103891][ T157] ? kswapd+0x50d/0x870 > [ 55.108212][ T157] ? kthread+0x485/0x600 > [ 55.112459][ T157] ? ret_from_fork+0xfa/0x140 > [ 55.116849][ T157] ? ret_from_fork_asm+0x11/0x20 > [ 55.121438][ T157] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 55.126388][ T157] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 55.131446][ T157] ? should_fail_ex+0x91/0xa20 > [ 55.136530][ T157] ? kmsan_get_metadata+0x146/0x1c0 > [ 55.141199][ T157] ? kmsan_get_metadata+0x146/0x1c0 > [ 55.145956][ T157] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 55.150928][ T157] ? __should_failslab+0x24f/0x2e0 > [ 55.155750][ T157] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 55.161123][ T157] ? __should_failslab+0x24f/0x2e0 > [ 55.165918][ T157] ? kmsan_get_metadata+0x146/0x1c0 > [ 55.170723][ T157] ? kmsan_get_metadata+0x146/0x1c0 > [ 55.175568][ T157] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 55.180684][ T157] __msan_warning+0x91/0x120 > [ 55.185066][ T157] obj_malloc+0x6cc/0x7b0 > [ 55.189320][ T157] ? kmsan_get_metadata+0x146/0x1c0 > [ 55.194051][ T157] zs_malloc+0xda2/0x12d0 > [ 55.198333][ T157] zs_zpool_malloc+0xa5/0x1b0 > [ 55.202886][ T157] ? zs_zpool_destroy+0x50/0x50 > [ 55.207378][ T157] zpool_malloc+0x113/0x150 > [ 55.211829][ T157] zswap_compress+0x69b/0xbd0 > [ 55.216298][ T157] zswap_store+0x1f24/0x2d00 > [ 55.220727][ T157] swap_writepage+0x15b/0x4f0 > [ 55.225186][ T157] ? generic_swapfile_activate+0xed0/0xed0 > [ 55.230120][ T157] pageout+0x3d4/0xeb0 > [ 55.234272][ T157] shrink_folio_list+0x4d7f/0x7480 > [ 55.239002][ T157] evict_folios+0x2160/0x52c0 > [ 55.243455][ T157] try_to_shrink_lruvec+0x1cb/0x460 > [ 55.248119][ T157] shrink_one+0x72d/0xeb0 > [ 55.252389][ T157] shrink_many+0x70d/0x10c0 > [ 55.257702][ T157] lru_gen_shrink_node+0x832/0xd10 > [ 55.262478][ T157] shrink_node+0x13a/0x1dd0 > [ 55.266848][ T157] ? mem_cgroup_soft_limit_reclaim+0x34/0x17b0 > [ 55.271983][ T157] ? filter_irq_stacks+0xb9/0x230 > [ 55.276677][ T157] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 55.281724][ T157] ? kswapd_age_node+0x63/0xb00 > [ 55.286322][ T157] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 55.291458][ T157] balance_pgdat+0x1556/0x2740 > [ 55.295936][ T157] ? finish_wait+0x2f1/0x4a0 > [ 55.300332][ T157] kswapd+0x50d/0x870 > [ 55.304457][ T157] kthread+0x485/0x600 > [ 55.308674][ T157] ? shrink_all_memory+0x3a0/0x3a0 > [ 55.313311][ T157] ? kthread_blkcg+0x120/0x120 > [ 55.317805][ T157] ret_from_fork+0xfa/0x140 > [ 55.322138][ T157] ? kthread_blkcg+0x120/0x120 > [ 55.326615][ T157] ? kthread_blkcg+0x120/0x120 > [ 55.331198][ T157] ret_from_fork_asm+0x11/0x20 > [ 55.335679][ T157] </TASK> > [ 56.470556][ T157] Shutting down cpus with NMI > [ 56.474684][ T157] Kernel Offset: disabled > [ 56.478285][ T157] Rebooting in 10 seconds.. > ---------------------------------------- > > ---------------------------------------- > ubuntu login: [ 42.392666][ T155] ===================================================== > [ 42.398208][ T155] BUG: KMSAN: use-after-free in lzo1x_decompress_safe+0x433/0x3930 > [ 42.408589][ T155] lzo1x_decompress_safe+0x433/0x3930 > [ 42.416017][ T155] lzo_sdecompress+0x119/0x220 > [ 42.427324][ T155] scomp_acomp_comp_decomp+0x65b/0xa10 > [ 42.439258][ T155] scomp_acomp_decompress+0x4e/0x60 > [ 42.449860][ T155] zswap_decompress+0x618/0xa50 > [ 42.459372][ T155] zswap_writeback_entry+0x6c0/0xaa0 > [ 42.468643][ T155] shrink_memcg_cb+0x3e8/0x870 > [ 42.474589][ T155] __list_lru_walk_one+0x4ee/0xf00 > [ 42.477891][ T155] list_lru_walk_one+0x1f6/0x250 > [ 42.481171][ T155] zswap_shrinker_scan+0x46b/0x760 > [ 42.484544][ T155] do_shrink_slab+0x958/0x1750 > [ 42.487742][ T155] shrink_slab_memcg+0x6ae/0xea0 > [ 42.491686][ T155] shrink_slab+0x119/0x7c0 > [ 42.496077][ T155] shrink_one+0x835/0xeb0 > [ 42.500477][ T155] shrink_many+0x70d/0x10c0 > [ 42.504933][ T155] lru_gen_shrink_node+0x832/0xd10 > [ 42.508651][ T155] shrink_node+0x13a/0x1dd0 > [ 42.512056][ T155] balance_pgdat+0x1556/0x2740 > [ 42.515294][ T155] kswapd+0x50d/0x870 > [ 42.518245][ T155] kthread+0x485/0x600 > [ 42.521178][ T155] ret_from_fork+0xfa/0x140 > [ 42.524242][ T155] ret_from_fork_asm+0x11/0x20 > [ 42.527444][ T155] > [ 42.529916][ T155] Uninit was stored to memory at: > [ 42.533147][ T155] scatterwalk_map_and_copy+0x8b5/0xb50 > [ 42.536505][ T155] scomp_acomp_comp_decomp+0x45c/0xa10 > [ 42.539860][ T155] scomp_acomp_decompress+0x4e/0x60 > [ 42.543099][ T155] zswap_decompress+0x618/0xa50 > [ 42.546244][ T155] zswap_writeback_entry+0x6c0/0xaa0 > [ 42.549525][ T155] shrink_memcg_cb+0x3e8/0x870 > [ 42.552652][ T155] __list_lru_walk_one+0x4ee/0xf00 > [ 42.555890][ T155] list_lru_walk_one+0x1f6/0x250 > [ 42.567920][ T155] zswap_shrinker_scan+0x46b/0x760 > [ 42.578533][ T155] do_shrink_slab+0x958/0x1750 > [ 42.587474][ T155] shrink_slab_memcg+0x6ae/0xea0 > [ 42.591733][ T155] shrink_slab+0x119/0x7c0 > [ 42.595698][ T155] shrink_one+0x835/0xeb0 > [ 42.599604][ T155] shrink_many+0x70d/0x10c0 > [ 42.603671][ T155] lru_gen_shrink_node+0x832/0xd10 > [ 42.608028][ T155] shrink_node+0x13a/0x1dd0 > [ 42.612164][ T155] balance_pgdat+0x1556/0x2740 > [ 42.616458][ T155] kswapd+0x50d/0x870 > [ 42.620420][ T155] kthread+0x485/0x600 > [ 42.624380][ T155] ret_from_fork+0xfa/0x140 > [ 42.628490][ T155] ret_from_fork_asm+0x11/0x20 > [ 42.632693][ T155] > [ 42.635854][ T155] Uninit was stored to memory at: > [ 42.640219][ T155] zswap_decompress+0x299/0xa50 > [ 42.644446][ T155] zswap_writeback_entry+0x6c0/0xaa0 > [ 42.648922][ T155] shrink_memcg_cb+0x3e8/0x870 > [ 42.653115][ T155] __list_lru_walk_one+0x4ee/0xf00 > [ 42.657464][ T155] list_lru_walk_one+0x1f6/0x250 > [ 42.661710][ T155] zswap_shrinker_scan+0x46b/0x760 > [ 42.666078][ T155] do_shrink_slab+0x958/0x1750 > [ 42.670389][ T155] shrink_slab_memcg+0x6ae/0xea0 > [ 42.679819][ T155] shrink_slab+0x119/0x7c0 > [ 42.688501][ T155] shrink_one+0x835/0xeb0 > [ 42.697021][ T155] shrink_many+0x70d/0x10c0 > [ 42.705719][ T155] lru_gen_shrink_node+0x832/0xd10 > [ 42.715345][ T155] shrink_node+0x13a/0x1dd0 > [ 42.724486][ T155] balance_pgdat+0x1556/0x2740 > [ 42.733580][ T155] kswapd+0x50d/0x870 > [ 42.742222][ T155] kthread+0x485/0x600 > [ 42.751032][ T155] ret_from_fork+0xfa/0x140 > [ 42.760274][ T155] ret_from_fork_asm+0x11/0x20 > [ 42.769826][ T155] > [ 42.776910][ T155] Uninit was created at: > [ 42.785419][ T155] free_unref_page_prepare+0x130/0xfc0 > [ 42.795890][ T155] free_unref_page_list+0x13f/0x1130 > [ 42.806224][ T155] shrink_folio_list+0x713e/0x7480 > [ 42.815480][ T155] evict_folios+0x2160/0x52c0 > [ 42.819727][ T155] try_to_shrink_lruvec+0x1cb/0x460 > [ 42.824366][ T155] shrink_one+0x72d/0xeb0 > [ 42.834077][ T155] shrink_many+0x70d/0x10c0 > [ 42.844079][ T155] lru_gen_shrink_node+0x832/0xd10 > [ 42.854215][ T155] shrink_node+0x13a/0x1dd0 > [ 42.863639][ T155] shrink_zones+0x787/0x1530 > [ 42.873152][ T155] do_try_to_free_pages+0x2ac/0x16a0 > [ 42.877447][ T155] try_to_free_pages+0xddb/0x19b0 > [ 42.880694][ T155] __alloc_pages_slowpath+0x1a05/0x2d00 > [ 42.884052][ T155] __alloc_pages+0xc6c/0x1040 > [ 42.887180][ T155] alloc_pages_mpol+0x477/0xc40 > [ 42.890362][ T155] alloc_pages+0x224/0x240 > [ 42.893479][ T155] pipe_write+0xae5/0x2bd0 > [ 42.896519][ T155] vfs_write+0xfb9/0x1b90 > [ 42.899562][ T155] ksys_write+0x275/0x500 > [ 42.902616][ T155] __x64_sys_write+0xdf/0x120 > [ 42.906154][ T155] do_syscall_64+0xd5/0x1c0 > [ 42.909855][ T155] entry_SYSCALL_64_after_hwframe+0x62/0x6a > [ 42.913670][ T155] > [ 42.916155][ T155] CPU: 5 PID: 155 Comm: kswapd1 Not tainted 6.8.0-rc5-next-20240223 #1 > [ 42.921857][ T155] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 > [ 42.927627][ T155] ===================================================== > [ 42.931409][ T155] Disabling lock debugging due to kernel taint > [ 42.934961][ T155] Kernel panic - not syncing: kmsan.panic set ... > [ 42.938569][ T155] CPU: 5 PID: 155 Comm: kswapd1 Tainted: G B 6.8.0-rc5-next-20240223 #1 > [ 42.944533][ T155] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 > [ 42.950295][ T155] Call Trace: > [ 42.952978][ T155] <TASK> > [ 42.955503][ T155] dump_stack_lvl+0x24b/0x300 > [ 42.960955][ T155] dump_stack+0x29/0x30 > [ 42.969770][ T155] panic+0x4ed/0xca0 > [ 42.978544][ T155] kmsan_report+0x2d1/0x2e0 > [ 42.987874][ T155] ? __msan_warning+0x91/0x120 > [ 42.997602][ T155] ? lzo1x_decompress_safe+0x433/0x3930 > [ 43.004774][ T155] ? lzo_sdecompress+0x119/0x220 > [ 43.008069][ T155] ? scomp_acomp_comp_decomp+0x65b/0xa10 > [ 43.011551][ T155] ? scomp_acomp_decompress+0x4e/0x60 > [ 43.014956][ T155] ? zswap_decompress+0x618/0xa50 > [ 43.018249][ T155] ? zswap_writeback_entry+0x6c0/0xaa0 > [ 43.021719][ T155] ? shrink_memcg_cb+0x3e8/0x870 > [ 43.025111][ T155] ? __list_lru_walk_one+0x4ee/0xf00 > [ 43.028534][ T155] ? list_lru_walk_one+0x1f6/0x250 > [ 43.031877][ T155] ? zswap_shrinker_scan+0x46b/0x760 > [ 43.035452][ T155] ? do_shrink_slab+0x958/0x1750 > [ 43.038777][ T155] ? shrink_slab_memcg+0x6ae/0xea0 > [ 43.042092][ T155] ? shrink_slab+0x119/0x7c0 > [ 43.045255][ T155] ? shrink_one+0x835/0xeb0 > [ 43.048375][ T155] ? shrink_many+0x70d/0x10c0 > [ 43.051557][ T155] ? lru_gen_shrink_node+0x832/0xd10 > [ 43.054932][ T155] ? shrink_node+0x13a/0x1dd0 > [ 43.058106][ T155] ? balance_pgdat+0x1556/0x2740 > [ 43.061387][ T155] ? kswapd+0x50d/0x870 > [ 43.064386][ T155] ? kthread+0x485/0x600 > [ 43.067433][ T155] ? ret_from_fork+0xfa/0x140 > [ 43.075042][ T155] ? ret_from_fork_asm+0x11/0x20 > [ 43.084182][ T155] ? shrink_one+0x835/0xeb0 > [ 43.093150][ T155] ? shrink_many+0x70d/0x10c0 > [ 43.102332][ T155] ? lru_gen_shrink_node+0x832/0xd10 > [ 43.112061][ T155] ? shrink_node+0x13a/0x1dd0 > [ 43.121464][ T155] ? balance_pgdat+0x1556/0x2740 > [ 43.131127][ T155] ? kswapd+0x50d/0x870 > [ 43.140045][ T155] ? kthread+0x485/0x600 > [ 43.148993][ T155] ? ret_from_fork+0xfa/0x140 > [ 43.158046][ T155] ? ret_from_fork_asm+0x11/0x20 > [ 43.166985][ T155] ? kmsan_internal_set_shadow_origin+0x66/0xe0 > [ 43.177320][ T155] ? kmsan_get_metadata+0x146/0x1c0 > [ 43.187138][ T155] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 43.198259][ T155] ? scatterwalk_map_and_copy+0xaa/0xb50 > [ 43.209263][ T155] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 43.220485][ T155] ? filter_irq_stacks+0xb9/0x230 > [ 43.230534][ T155] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 43.240946][ T155] __msan_warning+0x91/0x120 > [ 43.249737][ T155] lzo1x_decompress_safe+0x433/0x3930 > [ 43.259433][ T155] ? filter_irq_stacks+0xb9/0x230 > [ 43.268747][ T155] ? kmsan_internal_set_shadow_origin+0x66/0xe0 > [ 43.278890][ T155] ? kmsan_get_metadata+0x146/0x1c0 > [ 43.288092][ T155] lzo_sdecompress+0x119/0x220 > [ 43.296809][ T155] ? lzo_scompress+0x250/0x250 > [ 43.305573][ T155] scomp_acomp_comp_decomp+0x65b/0xa10 > [ 43.315139][ T155] scomp_acomp_decompress+0x4e/0x60 > [ 43.324453][ T155] ? scomp_acomp_compress+0x60/0x60 > [ 43.334172][ T155] zswap_decompress+0x618/0xa50 > [ 43.343444][ T155] zswap_writeback_entry+0x6c0/0xaa0 > [ 43.353130][ T155] shrink_memcg_cb+0x3e8/0x870 > [ 43.362321][ T155] __list_lru_walk_one+0x4ee/0xf00 > [ 43.371873][ T155] ? zswap_shrinker_count+0x670/0x670 > [ 43.381677][ T155] ? __msan_metadata_ptr_for_load_1+0x24/0x40 > [ 43.392255][ T155] list_lru_walk_one+0x1f6/0x250 > [ 43.401742][ T155] ? zswap_shrinker_count+0x670/0x670 > [ 43.411756][ T155] zswap_shrinker_scan+0x46b/0x760 > [ 43.421682][ T155] ? zswap_debugfs_init+0x420/0x420 > [ 43.432130][ T155] do_shrink_slab+0x958/0x1750 > [ 43.436685][ T155] shrink_slab_memcg+0x6ae/0xea0 > [ 43.441009][ T155] shrink_slab+0x119/0x7c0 > [ 43.446049][ T155] ? try_to_shrink_lruvec+0x42c/0x460 > [ 43.451031][ T155] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 43.456008][ T155] shrink_one+0x835/0xeb0 > [ 43.460383][ T155] shrink_many+0x70d/0x10c0 > [ 43.464760][ T155] lru_gen_shrink_node+0x832/0xd10 > [ 43.469331][ T155] shrink_node+0x13a/0x1dd0 > [ 43.473657][ T155] ? mem_cgroup_soft_limit_reclaim+0x34/0x17b0 > [ 43.478672][ T155] ? filter_irq_stacks+0xb9/0x230 > [ 43.485985][ T155] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 43.497004][ T155] ? kswapd_age_node+0x63/0xb00 > [ 43.506282][ T155] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 43.516209][ T155] balance_pgdat+0x1556/0x2740 > [ 43.570854][ T155] ? finish_wait+0x2f1/0x4a0 > [ 43.580532][ T155] kswapd+0x50d/0x870 > [ 43.589396][ T155] kthread+0x485/0x600 > [ 43.598259][ T155] ? shrink_all_memory+0x3a0/0x3a0 > [ 43.608549][ T155] ? kthread_blkcg+0x120/0x120 > [ 43.618041][ T155] ret_from_fork+0xfa/0x140 > [ 43.627225][ T155] ? kthread_blkcg+0x120/0x120 > [ 43.636721][ T155] ? kthread_blkcg+0x120/0x120 > [ 43.646141][ T155] ret_from_fork_asm+0x11/0x20 > [ 43.655612][ T155] </TASK> > [ 44.788328][ T155] Shutting down cpus with NMI > [ 44.792527][ T155] Kernel Offset: disabled > [ 44.795640][ T155] Rebooting in 10 seconds.. > ---------------------------------------- > > > > Maybe a different cause, but I feel that frequency of hitting "corrupted stack end detected > inside scheduler" problem has increased in linux-next.git compared to linux.git . > Too much stack usage? > > ---------------------------------------- > ubuntu login: [ 53.757790][ T194] Kernel panic - not syncing: corrupted stack end detected inside scheduler > [ 53.784397][ T194] CPU: 3 PID: 194 Comm: kworker/u39:3 Not tainted 6.8.0-rc5-next-20240223 #1 > [ 53.810595][ T194] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 > [ 53.829184][ T194] Workqueue: writeback wb_workfn (flush-8:0) > [ 53.835445][ T194] Call Trace: > [ 53.839997][ T194] <TASK> > [ 53.844176][ T194] dump_stack_lvl+0x24b/0x300 > [ 53.849323][ T194] dump_stack+0x29/0x30 > [ 53.854261][ T194] panic+0x4ed/0xca0 > [ 53.858938][ T194] ? kmsan_get_metadata+0x50/0x1c0 > [ 53.864326][ T194] __schedule+0x9e4/0x2770 > [ 53.883521][ T194] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 53.910719][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 53.936505][ T194] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 53.964199][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 53.989716][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.015124][ T194] __cond_resched+0x50/0xc0 > [ 54.038931][ T194] rmap_walk_file+0x382/0x8d0 > [ 54.066110][ T194] folio_mkclean+0x34d/0x530 > [ 54.089049][ T194] ? folio_mkclean+0x530/0x530 > [ 54.117183][ T194] ? page_mkclean_one+0x3f0/0x3f0 > [ 54.135476][ T194] folio_clear_dirty_for_io+0x22a/0xae0 > [ 54.144905][ T194] ? filemap_get_folios_tag+0x64a/0x6c0 > [ 54.155053][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.165436][ T194] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 54.175572][ T194] mpage_submit_folio+0x12a/0x5d0 > [ 54.186797][ T194] ext4_do_writepages+0x3401/0x63d0 > [ 54.193608][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.206517][ T194] ext4_writepages+0x338/0x870 > [ 54.234367][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.243997][ T194] ? ext4_read_folio+0x440/0x440 > [ 54.271561][ T194] do_writepages+0x5e5/0x15c0 > [ 54.287149][ T194] ? wake_up_bit+0x9c/0x490 > [ 54.297127][ T194] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 54.318153][ T194] ? filter_irq_stacks+0xb9/0x230 > [ 54.326784][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.343015][ T194] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 54.349741][ T194] __writeback_single_inode+0x170/0x1090 > [ 54.356296][ T194] ? __msan_metadata_ptr_for_load_8+0x24/0x40 > [ 54.364305][ T194] writeback_sb_inodes+0xd74/0x1e20 > [ 54.371317][ T194] ? kmsan_internal_set_shadow_origin+0x66/0xe0 > [ 54.378719][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.385263][ T194] __writeback_inodes_wb+0x1d6/0x510 > [ 54.391720][ T194] wb_writeback+0x63e/0xff0 > [ 54.399899][ T194] ? stack_depot_save_flags+0x2c/0x6f0 > [ 54.408778][ T194] ? kmsan_internal_set_shadow_origin+0x60/0xe0 > [ 54.439971][ T194] wb_do_writeback+0x120b/0x1510 > [ 54.467029][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.494644][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.512469][ T194] wb_workfn+0x190/0x850 > [ 54.537678][ T194] ? kmsan_get_metadata+0x146/0x1c0 > [ 54.565645][ T194] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 > [ 54.595256][ T194] ? inode_wait_for_writeback+0x320/0x320 > [ 54.609201][ T194] process_one_work+0xa0c/0x1c60 > [ 54.614993][ T194] worker_thread+0x11f2/0x1ba0 > [ 54.620515][ T194] kthread+0x485/0x600 > [ 54.625631][ T194] ? pr_cont_work+0xee0/0xee0 > [ 54.630919][ T194] ? kthread_blkcg+0x120/0x120 > [ 54.636291][ T194] ret_from_fork+0xfa/0x140 > [ 54.641771][ T194] ? kthread_blkcg+0x120/0x120 > [ 54.647279][ T194] ? kthread_blkcg+0x120/0x120 > [ 54.652705][ T194] ret_from_fork_asm+0x11/0x20 > [ 54.658127][ T194] </TASK> > [ 54.683905][ T194] Kernel Offset: disabled > [ 54.688874][ T194] Rebooting in 10 seconds.. > ---------------------------------------- > >
