Date
June 24, 2025, 11:37 a.m.
| Environment | |
|---|---|
| dragonboard-845c | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 44.966390] ================================================================== [ 44.977755] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 44.985620] Read of size 1 at addr ffff000083320280 by task kunit_try_catch/313 [ 44.993026] [ 44.994568] CPU: 1 UID: 0 PID: 313 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250624 #1 PREEMPT [ 44.994605] Tainted: [B]=BAD_PAGE, [N]=TEST [ 44.994614] Hardware name: Thundercomm Dragonboard 845c (DT) [ 44.994631] Call trace: [ 44.994639] show_stack+0x20/0x38 (C) [ 44.994662] dump_stack_lvl+0x8c/0xd0 [ 44.994686] print_report+0x118/0x608 [ 44.994709] kasan_report+0xdc/0x128 [ 44.994728] __kasan_check_byte+0x54/0x70 [ 44.994750] kmem_cache_destroy+0x34/0x218 [ 44.994773] kmem_cache_double_destroy+0x174/0x300 [ 44.994791] kunit_try_run_case+0x170/0x3f0 [ 44.994815] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 44.994838] kthread+0x328/0x630 [ 44.994858] ret_from_fork+0x10/0x20 [ 44.994879] [ 45.064534] Allocated by task 313: [ 45.067998] kasan_save_stack+0x3c/0x68 [ 45.071912] kasan_save_track+0x20/0x40 [ 45.075824] kasan_save_alloc_info+0x40/0x58 [ 45.080164] __kasan_slab_alloc+0xa8/0xb0 [ 45.084247] kmem_cache_alloc_noprof+0x10c/0x398 [ 45.088952] __kmem_cache_create_args+0x178/0x280 [ 45.093737] kmem_cache_double_destroy+0xc0/0x300 [ 45.098522] kunit_try_run_case+0x170/0x3f0 [ 45.102780] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 45.108348] kthread+0x328/0x630 [ 45.111643] ret_from_fork+0x10/0x20 [ 45.115281] [ 45.116809] Freed by task 313: [ 45.119925] kasan_save_stack+0x3c/0x68 [ 45.123836] kasan_save_track+0x20/0x40 [ 45.127747] kasan_save_free_info+0x4c/0x78 [ 45.132001] __kasan_slab_free+0x6c/0x98 [ 45.136000] kmem_cache_free+0x260/0x468 [ 45.139995] slab_kmem_cache_release+0x38/0x50 [ 45.144512] kmem_cache_release+0x1c/0x30 [ 45.148594] kobject_put+0x17c/0x420 [ 45.152236] sysfs_slab_release+0x1c/0x30 [ 45.156317] kmem_cache_destroy+0x118/0x218 [ 45.160572] kmem_cache_double_destroy+0x128/0x300 [ 45.165443] kunit_try_run_case+0x170/0x3f0 [ 45.169698] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 45.175269] kthread+0x328/0x630 [ 45.178564] ret_from_fork+0x10/0x20 [ 45.182203] [ 45.183739] The buggy address belongs to the object at ffff000083320280 [ 45.183739] which belongs to the cache kmem_cache of size 208 [ 45.196312] The buggy address is located 0 bytes inside of [ 45.196312] freed 208-byte region [ffff000083320280, ffff000083320350) [ 45.208541] [ 45.210075] The buggy address belongs to the physical page: [ 45.215724] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103320 [ 45.223832] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 45.231596] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 45.238662] page_type: f5(slab) [ 45.241874] raw: 0bfffe0000000040 ffff000080002000 dead000000000122 0000000000000000 [ 45.249721] raw: 0000000000000000 0000000080190019 00000000f5000000 0000000000000000 [ 45.257572] head: 0bfffe0000000040 ffff000080002000 dead000000000122 0000000000000000 [ 45.265505] head: 0000000000000000 0000000080190019 00000000f5000000 0000000000000000 [ 45.273437] head: 0bfffe0000000001 fffffdffc20cc801 00000000ffffffff 00000000ffffffff [ 45.281372] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 45.289300] page dumped because: kasan: bad access detected [ 45.294952] [ 45.296487] Memory state around the buggy address: [ 45.301355] ffff000083320180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.308671] ffff000083320200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 45.315987] >ffff000083320280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.323302] ^ [ 45.326594] ffff000083320300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 45.333909] ffff000083320380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 45.341222] ==================================================================
[ 34.914711] ================================================================== [ 34.915232] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 34.915565] Read of size 1 at addr fff00000c77d6140 by task kunit_try_catch/226 [ 34.916125] [ 34.916253] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250624 #1 PREEMPT [ 34.916617] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.916785] Hardware name: linux,dummy-virt (DT) [ 34.917065] Call trace: [ 34.917633] show_stack+0x20/0x38 (C) [ 34.918074] dump_stack_lvl+0x8c/0xd0 [ 34.918571] print_report+0x118/0x608 [ 34.918837] kasan_report+0xdc/0x128 [ 34.919292] __kasan_check_byte+0x54/0x70 [ 34.919784] kmem_cache_destroy+0x34/0x218 [ 34.920176] kmem_cache_double_destroy+0x174/0x300 [ 34.920323] kunit_try_run_case+0x170/0x3f0 [ 34.920457] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.920603] kthread+0x328/0x630 [ 34.921136] ret_from_fork+0x10/0x20 [ 34.921263] [ 34.921310] Allocated by task 226: [ 34.921385] kasan_save_stack+0x3c/0x68 [ 34.921488] kasan_save_track+0x20/0x40 [ 34.921584] kasan_save_alloc_info+0x40/0x58 [ 34.921674] __kasan_slab_alloc+0xa8/0xb0 [ 34.922422] kmem_cache_alloc_noprof+0x10c/0x398 [ 34.923128] __kmem_cache_create_args+0x178/0x280 [ 34.923912] kmem_cache_double_destroy+0xc0/0x300 [ 34.924294] kunit_try_run_case+0x170/0x3f0 [ 34.924614] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.925088] kthread+0x328/0x630 [ 34.925846] ret_from_fork+0x10/0x20 [ 34.926308] [ 34.926538] Freed by task 226: [ 34.926608] kasan_save_stack+0x3c/0x68 [ 34.926936] kasan_save_track+0x20/0x40 [ 34.927511] kasan_save_free_info+0x4c/0x78 [ 34.927626] __kasan_slab_free+0x6c/0x98 [ 34.928029] kmem_cache_free+0x260/0x468 [ 34.928419] slab_kmem_cache_release+0x38/0x50 [ 34.928988] kmem_cache_release+0x1c/0x30 [ 34.929277] kobject_put+0x17c/0x420 [ 34.929472] sysfs_slab_release+0x1c/0x30 [ 34.929567] kmem_cache_destroy+0x118/0x218 [ 34.930453] kmem_cache_double_destroy+0x128/0x300 [ 34.930916] kunit_try_run_case+0x170/0x3f0 [ 34.931223] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.931448] kthread+0x328/0x630 [ 34.931719] ret_from_fork+0x10/0x20 [ 34.932049] [ 34.932411] The buggy address belongs to the object at fff00000c77d6140 [ 34.932411] which belongs to the cache kmem_cache of size 208 [ 34.932556] The buggy address is located 0 bytes inside of [ 34.932556] freed 208-byte region [fff00000c77d6140, fff00000c77d6210) [ 34.933319] [ 34.933502] The buggy address belongs to the physical page: [ 34.933803] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077d6 [ 34.934387] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.934792] page_type: f5(slab) [ 34.935132] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 34.935653] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 34.935760] page dumped because: kasan: bad access detected [ 34.935843] [ 34.936314] Memory state around the buggy address: [ 34.936791] fff00000c77d6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.937088] fff00000c77d6080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 34.937640] >fff00000c77d6100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 34.937734] ^ [ 34.938235] fff00000c77d6180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.938594] fff00000c77d6200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.938746] ==================================================================
[ 30.262903] ================================================================== [ 30.263528] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 30.264248] Read of size 1 at addr ffff888102de7000 by task kunit_try_catch/245 [ 30.264834] [ 30.265102] CPU: 0 UID: 0 PID: 245 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250624 #1 PREEMPT(voluntary) [ 30.265219] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.265250] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 30.265304] Call Trace: [ 30.265336] <TASK> [ 30.265378] dump_stack_lvl+0x73/0xb0 [ 30.265447] print_report+0xd1/0x650 [ 30.265497] ? __virt_addr_valid+0x1db/0x2d0 [ 30.265573] ? kmem_cache_double_destroy+0x1bf/0x380 [ 30.265660] ? kasan_complete_mode_report_info+0x64/0x200 [ 30.265724] ? kmem_cache_double_destroy+0x1bf/0x380 [ 30.265783] kasan_report+0x141/0x180 [ 30.265832] ? kmem_cache_double_destroy+0x1bf/0x380 [ 30.265891] ? kmem_cache_double_destroy+0x1bf/0x380 [ 30.265948] __kasan_check_byte+0x3d/0x50 [ 30.266004] kmem_cache_destroy+0x25/0x1d0 [ 30.266061] kmem_cache_double_destroy+0x1bf/0x380 [ 30.266117] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 30.266171] ? finish_task_switch.isra.0+0x153/0x700 [ 30.266230] ? __switch_to+0x47/0xf50 [ 30.266297] ? __pfx_read_tsc+0x10/0x10 [ 30.266346] ? ktime_get_ts64+0x86/0x230 [ 30.266400] kunit_try_run_case+0x1a5/0x480 [ 30.266458] ? __pfx_kunit_try_run_case+0x10/0x10 [ 30.266510] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 30.266588] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 30.266650] ? __kthread_parkme+0x82/0x180 [ 30.266702] ? preempt_count_sub+0x50/0x80 [ 30.266762] ? __pfx_kunit_try_run_case+0x10/0x10 [ 30.266849] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 30.266887] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 30.266918] kthread+0x337/0x6f0 [ 30.266942] ? trace_preempt_on+0x20/0xc0 [ 30.266974] ? __pfx_kthread+0x10/0x10 [ 30.266999] ? _raw_spin_unlock_irq+0x47/0x80 [ 30.267028] ? calculate_sigpending+0x7b/0xa0 [ 30.267057] ? __pfx_kthread+0x10/0x10 [ 30.267083] ret_from_fork+0x116/0x1d0 [ 30.267107] ? __pfx_kthread+0x10/0x10 [ 30.267132] ret_from_fork_asm+0x1a/0x30 [ 30.267170] </TASK> [ 30.267185] [ 30.282060] Allocated by task 245: [ 30.282498] kasan_save_stack+0x45/0x70 [ 30.283007] kasan_save_track+0x18/0x40 [ 30.283441] kasan_save_alloc_info+0x3b/0x50 [ 30.283905] __kasan_slab_alloc+0x91/0xa0 [ 30.284422] kmem_cache_alloc_noprof+0x123/0x3f0 [ 30.284679] __kmem_cache_create_args+0x169/0x240 [ 30.285133] kmem_cache_double_destroy+0xd5/0x380 [ 30.285563] kunit_try_run_case+0x1a5/0x480 [ 30.285994] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 30.286327] kthread+0x337/0x6f0 [ 30.286785] ret_from_fork+0x116/0x1d0 [ 30.287129] ret_from_fork_asm+0x1a/0x30 [ 30.287456] [ 30.287722] Freed by task 245: [ 30.288053] kasan_save_stack+0x45/0x70 [ 30.288460] kasan_save_track+0x18/0x40 [ 30.288844] kasan_save_free_info+0x3f/0x60 [ 30.289237] __kasan_slab_free+0x56/0x70 [ 30.289693] kmem_cache_free+0x249/0x420 [ 30.289972] slab_kmem_cache_release+0x2e/0x40 [ 30.290454] kmem_cache_release+0x16/0x20 [ 30.290882] kobject_put+0x181/0x450 [ 30.291301] sysfs_slab_release+0x16/0x20 [ 30.291839] kmem_cache_destroy+0xf0/0x1d0 [ 30.292528] kmem_cache_double_destroy+0x14e/0x380 [ 30.293118] kunit_try_run_case+0x1a5/0x480 [ 30.293664] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 30.294215] kthread+0x337/0x6f0 [ 30.294419] ret_from_fork+0x116/0x1d0 [ 30.294909] ret_from_fork_asm+0x1a/0x30 [ 30.295114] [ 30.295242] The buggy address belongs to the object at ffff888102de7000 [ 30.295242] which belongs to the cache kmem_cache of size 208 [ 30.296674] The buggy address is located 0 bytes inside of [ 30.296674] freed 208-byte region [ffff888102de7000, ffff888102de70d0) [ 30.297613] [ 30.297849] The buggy address belongs to the physical page: [ 30.298315] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102de7 [ 30.298882] flags: 0x200000000000000(node=0|zone=2) [ 30.299326] page_type: f5(slab) [ 30.299710] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 30.300490] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 30.301056] page dumped because: kasan: bad access detected [ 30.301406] [ 30.301647] Memory state around the buggy address: [ 30.302195] ffff888102de6f00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.302967] ffff888102de6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.303403] >ffff888102de7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.304372] ^ [ 30.304899] ffff888102de7080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 30.305264] ffff888102de7100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.305476] ==================================================================