Date
July 5, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.816702] ================================================================== [ 18.816776] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.816846] Free of addr fff00000c7845000 by task kunit_try_catch/209 [ 18.819331] [ 18.819394] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.819545] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.819573] Hardware name: linux,dummy-virt (DT) [ 18.819608] Call trace: [ 18.819632] show_stack+0x20/0x38 (C) [ 18.819691] dump_stack_lvl+0x8c/0xd0 [ 18.819837] print_report+0x118/0x608 [ 18.819917] kasan_report_invalid_free+0xc0/0xe8 [ 18.820382] check_slab_allocation+0xd4/0x108 [ 18.822172] __kasan_slab_pre_free+0x2c/0x48 [ 18.822245] kmem_cache_free+0xf0/0x468 [ 18.822296] kmem_cache_double_free+0x190/0x3c8 [ 18.822400] kunit_try_run_case+0x170/0x3f0 [ 18.822450] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.822610] kthread+0x328/0x630 [ 18.822659] ret_from_fork+0x10/0x20 [ 18.822714] [ 18.822733] Allocated by task 209: [ 18.822762] kasan_save_stack+0x3c/0x68 [ 18.823361] kasan_save_track+0x20/0x40 [ 18.823659] kasan_save_alloc_info+0x40/0x58 [ 18.823787] __kasan_slab_alloc+0xa8/0xb0 [ 18.823829] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.824174] kmem_cache_double_free+0x12c/0x3c8 [ 18.824487] kunit_try_run_case+0x170/0x3f0 [ 18.824640] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.824686] kthread+0x328/0x630 [ 18.824720] ret_from_fork+0x10/0x20 [ 18.824757] [ 18.824776] Freed by task 209: [ 18.824805] kasan_save_stack+0x3c/0x68 [ 18.825576] kasan_save_track+0x20/0x40 [ 18.826517] kasan_save_free_info+0x4c/0x78 [ 18.826614] __kasan_slab_free+0x6c/0x98 [ 18.826885] kmem_cache_free+0x260/0x468 [ 18.826928] kmem_cache_double_free+0x140/0x3c8 [ 18.827291] kunit_try_run_case+0x170/0x3f0 [ 18.827388] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.827544] kthread+0x328/0x630 [ 18.827642] ret_from_fork+0x10/0x20 [ 18.828011] [ 18.828036] The buggy address belongs to the object at fff00000c7845000 [ 18.828036] which belongs to the cache test_cache of size 200 [ 18.828102] The buggy address is located 0 bytes inside of [ 18.828102] 200-byte region [fff00000c7845000, fff00000c78450c8) [ 18.828484] [ 18.829024] The buggy address belongs to the physical page: [ 18.829064] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107845 [ 18.830140] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.830219] page_type: f5(slab) [ 18.830264] raw: 0bfffe0000000000 fff00000c595dc80 dead000000000122 0000000000000000 [ 18.830318] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.830359] page dumped because: kasan: bad access detected [ 18.830392] [ 18.830411] Memory state around the buggy address: [ 18.830447] fff00000c7844f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.830490] fff00000c7844f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.830534] >fff00000c7845000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.830572] ^ [ 18.830600] fff00000c7845080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.830642] fff00000c7845100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.830681] ==================================================================
[ 14.372624] ================================================================== [ 14.373252] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 14.373657] Free of addr ffff888103921000 by task kunit_try_catch/227 [ 14.373941] [ 14.374096] CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 14.374153] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.374166] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.374193] Call Trace: [ 14.374209] <TASK> [ 14.374231] dump_stack_lvl+0x73/0xb0 [ 14.374269] print_report+0xd1/0x650 [ 14.374296] ? __virt_addr_valid+0x1db/0x2d0 [ 14.374325] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.374349] ? kmem_cache_double_free+0x1e5/0x480 [ 14.374377] kasan_report_invalid_free+0x10a/0x130 [ 14.374403] ? kmem_cache_double_free+0x1e5/0x480 [ 14.374432] ? kmem_cache_double_free+0x1e5/0x480 [ 14.374459] check_slab_allocation+0x101/0x130 [ 14.374483] __kasan_slab_pre_free+0x28/0x40 [ 14.374506] kmem_cache_free+0xed/0x420 [ 14.374529] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 14.374552] ? kmem_cache_double_free+0x1e5/0x480 [ 14.374582] kmem_cache_double_free+0x1e5/0x480 [ 14.374610] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 14.374635] ? finish_task_switch.isra.0+0x153/0x700 [ 14.374661] ? __switch_to+0x47/0xf50 [ 14.374695] ? __pfx_read_tsc+0x10/0x10 [ 14.374719] ? ktime_get_ts64+0x86/0x230 [ 14.374747] kunit_try_run_case+0x1a5/0x480 [ 14.374777] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.374817] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.374845] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.374871] ? __kthread_parkme+0x82/0x180 [ 14.374895] ? preempt_count_sub+0x50/0x80 [ 14.374922] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.374948] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.374974] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.374999] kthread+0x337/0x6f0 [ 14.375021] ? trace_preempt_on+0x20/0xc0 [ 14.375047] ? __pfx_kthread+0x10/0x10 [ 14.375091] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.375116] ? calculate_sigpending+0x7b/0xa0 [ 14.375144] ? __pfx_kthread+0x10/0x10 [ 14.375167] ret_from_fork+0x116/0x1d0 [ 14.375188] ? __pfx_kthread+0x10/0x10 [ 14.375211] ret_from_fork_asm+0x1a/0x30 [ 14.375246] </TASK> [ 14.375260] [ 14.383566] Allocated by task 227: [ 14.383739] kasan_save_stack+0x45/0x70 [ 14.383915] kasan_save_track+0x18/0x40 [ 14.384166] kasan_save_alloc_info+0x3b/0x50 [ 14.384391] __kasan_slab_alloc+0x91/0xa0 [ 14.384590] kmem_cache_alloc_noprof+0x123/0x3f0 [ 14.384850] kmem_cache_double_free+0x14f/0x480 [ 14.385104] kunit_try_run_case+0x1a5/0x480 [ 14.385321] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.385603] kthread+0x337/0x6f0 [ 14.385776] ret_from_fork+0x116/0x1d0 [ 14.385972] ret_from_fork_asm+0x1a/0x30 [ 14.386156] [ 14.386239] Freed by task 227: [ 14.386368] kasan_save_stack+0x45/0x70 [ 14.386538] kasan_save_track+0x18/0x40 [ 14.386756] kasan_save_free_info+0x3f/0x60 [ 14.387008] __kasan_slab_free+0x56/0x70 [ 14.387261] kmem_cache_free+0x249/0x420 [ 14.387488] kmem_cache_double_free+0x16a/0x480 [ 14.387737] kunit_try_run_case+0x1a5/0x480 [ 14.387930] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.388158] kthread+0x337/0x6f0 [ 14.388337] ret_from_fork+0x116/0x1d0 [ 14.388557] ret_from_fork_asm+0x1a/0x30 [ 14.388801] [ 14.388912] The buggy address belongs to the object at ffff888103921000 [ 14.388912] which belongs to the cache test_cache of size 200 [ 14.389477] The buggy address is located 0 bytes inside of [ 14.389477] 200-byte region [ffff888103921000, ffff8881039210c8) [ 14.389983] [ 14.390126] The buggy address belongs to the physical page: [ 14.390380] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103921 [ 14.390725] flags: 0x200000000000000(node=0|zone=2) [ 14.390964] page_type: f5(slab) [ 14.391129] raw: 0200000000000000 ffff888100a13dc0 dead000000000122 0000000000000000 [ 14.391391] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 14.391774] page dumped because: kasan: bad access detected [ 14.392089] [ 14.392196] Memory state around the buggy address: [ 14.392449] ffff888103920f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.392700] ffff888103920f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.392960] >ffff888103921000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 14.393355] ^ [ 14.393544] ffff888103921080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 14.393926] ffff888103921100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.394315] ==================================================================