Date
July 25, 2025, 3:13 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.266105] ================================================================== [ 33.266182] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 33.266604] Free of addr fff00000c9adf000 by task kunit_try_catch/241 [ 33.266660] [ 33.266986] CPU: 1 UID: 0 PID: 241 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250725 #1 PREEMPT [ 33.267529] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 33.267719] Hardware name: linux,dummy-virt (DT) [ 33.268094] Call trace: [ 33.268212] show_stack+0x20/0x38 (C) [ 33.268274] dump_stack_lvl+0x8c/0xd0 [ 33.268434] print_report+0x118/0x5e8 [ 33.268635] kasan_report_invalid_free+0xc0/0xe8 [ 33.268747] check_slab_allocation+0xd4/0x108 [ 33.268993] __kasan_slab_pre_free+0x2c/0x48 [ 33.269202] kmem_cache_free+0xf0/0x468 [ 33.269331] kmem_cache_double_free+0x190/0x3c8 [ 33.269695] kunit_try_run_case+0x170/0x3f0 [ 33.270052] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.270355] kthread+0x328/0x630 [ 33.270653] ret_from_fork+0x10/0x20 [ 33.270717] [ 33.270738] Allocated by task 241: [ 33.270768] kasan_save_stack+0x3c/0x68 [ 33.270809] kasan_save_track+0x20/0x40 [ 33.270843] kasan_save_alloc_info+0x40/0x58 [ 33.270881] __kasan_slab_alloc+0xa8/0xb0 [ 33.271056] kmem_cache_alloc_noprof+0x10c/0x398 [ 33.271116] kmem_cache_double_free+0x12c/0x3c8 [ 33.271420] kunit_try_run_case+0x170/0x3f0 [ 33.271460] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.271575] kthread+0x328/0x630 [ 33.271717] ret_from_fork+0x10/0x20 [ 33.271756] [ 33.271866] Freed by task 241: [ 33.272047] kasan_save_stack+0x3c/0x68 [ 33.272390] kasan_save_track+0x20/0x40 [ 33.272696] kasan_save_free_info+0x4c/0x78 [ 33.272737] __kasan_slab_free+0x7c/0xa8 [ 33.272773] kmem_cache_free+0x260/0x468 [ 33.272809] kmem_cache_double_free+0x140/0x3c8 [ 33.272849] kunit_try_run_case+0x170/0x3f0 [ 33.272886] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.273388] kthread+0x328/0x630 [ 33.273433] ret_from_fork+0x10/0x20 [ 33.273471] [ 33.273491] The buggy address belongs to the object at fff00000c9adf000 [ 33.273491] which belongs to the cache test_cache of size 200 [ 33.273945] The buggy address is located 0 bytes inside of [ 33.273945] 200-byte region [fff00000c9adf000, fff00000c9adf0c8) [ 33.274259] [ 33.274287] The buggy address belongs to the physical page: [ 33.274330] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109adf [ 33.274811] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.274874] page_type: f5(slab) [ 33.275287] raw: 0bfffe0000000000 fff00000c56bc8c0 dead000000000122 0000000000000000 [ 33.275373] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 33.275945] page dumped because: kasan: bad access detected [ 33.276016] [ 33.276112] Memory state around the buggy address: [ 33.276172] fff00000c9adef00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.276383] fff00000c9adef80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.276432] >fff00000c9adf000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.276470] ^ [ 33.276500] fff00000c9adf080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 33.276552] fff00000c9adf100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.276846] ==================================================================
[ 26.473732] ================================================================== [ 26.474225] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 26.474564] Free of addr ffff888106258000 by task kunit_try_catch/258 [ 26.474803] [ 26.474909] CPU: 1 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) [ 26.474972] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.474983] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.475004] Call Trace: [ 26.475017] <TASK> [ 26.475034] dump_stack_lvl+0x73/0xb0 [ 26.475066] print_report+0xd1/0x640 [ 26.475089] ? __virt_addr_valid+0x1db/0x2d0 [ 26.475140] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.475190] ? kmem_cache_double_free+0x1e5/0x480 [ 26.475219] kasan_report_invalid_free+0x10a/0x130 [ 26.475244] ? kmem_cache_double_free+0x1e5/0x480 [ 26.475271] ? kmem_cache_double_free+0x1e5/0x480 [ 26.475296] check_slab_allocation+0x101/0x130 [ 26.475318] __kasan_slab_pre_free+0x28/0x40 [ 26.475340] kmem_cache_free+0xed/0x420 [ 26.475372] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 26.475407] ? kmem_cache_double_free+0x1e5/0x480 [ 26.475435] kmem_cache_double_free+0x1e5/0x480 [ 26.475471] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 26.475496] ? finish_task_switch.isra.0+0x153/0x700 [ 26.475519] ? __switch_to+0x47/0xf80 [ 26.475548] ? __pfx_read_tsc+0x10/0x10 [ 26.475570] ? ktime_get_ts64+0x86/0x230 [ 26.475597] kunit_try_run_case+0x1a5/0x480 [ 26.475623] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.475645] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.475677] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.475704] ? __kthread_parkme+0x82/0x180 [ 26.475725] ? preempt_count_sub+0x50/0x80 [ 26.475759] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.475783] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.475818] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.475843] kthread+0x337/0x6f0 [ 26.475872] ? trace_preempt_on+0x20/0xc0 [ 26.475896] ? __pfx_kthread+0x10/0x10 [ 26.475917] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.475960] ? calculate_sigpending+0x7b/0xa0 [ 26.475985] ? __pfx_kthread+0x10/0x10 [ 26.476016] ret_from_fork+0x116/0x1d0 [ 26.476037] ? __pfx_kthread+0x10/0x10 [ 26.476057] ret_from_fork_asm+0x1a/0x30 [ 26.476090] </TASK> [ 26.476101] [ 26.487013] Allocated by task 258: [ 26.487613] kasan_save_stack+0x45/0x70 [ 26.487868] kasan_save_track+0x18/0x40 [ 26.488236] kasan_save_alloc_info+0x3b/0x50 [ 26.488567] __kasan_slab_alloc+0x91/0xa0 [ 26.488910] kmem_cache_alloc_noprof+0x123/0x3f0 [ 26.489198] kmem_cache_double_free+0x14f/0x480 [ 26.489653] kunit_try_run_case+0x1a5/0x480 [ 26.490014] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.490494] kthread+0x337/0x6f0 [ 26.490674] ret_from_fork+0x116/0x1d0 [ 26.491119] ret_from_fork_asm+0x1a/0x30 [ 26.491277] [ 26.491519] Freed by task 258: [ 26.491902] kasan_save_stack+0x45/0x70 [ 26.492218] kasan_save_track+0x18/0x40 [ 26.492453] kasan_save_free_info+0x3f/0x60 [ 26.492718] __kasan_slab_free+0x5e/0x80 [ 26.492995] kmem_cache_free+0x249/0x420 [ 26.493285] kmem_cache_double_free+0x16a/0x480 [ 26.493726] kunit_try_run_case+0x1a5/0x480 [ 26.494216] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.494481] kthread+0x337/0x6f0 [ 26.494638] ret_from_fork+0x116/0x1d0 [ 26.494832] ret_from_fork_asm+0x1a/0x30 [ 26.495336] [ 26.495410] The buggy address belongs to the object at ffff888106258000 [ 26.495410] which belongs to the cache test_cache of size 200 [ 26.496311] The buggy address is located 0 bytes inside of [ 26.496311] 200-byte region [ffff888106258000, ffff8881062580c8) [ 26.496969] [ 26.497290] The buggy address belongs to the physical page: [ 26.497550] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106258 [ 26.498099] flags: 0x200000000000000(node=0|zone=2) [ 26.498450] page_type: f5(slab) [ 26.498633] raw: 0200000000000000 ffff888100f85dc0 dead000000000122 0000000000000000 [ 26.499199] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 26.499668] page dumped because: kasan: bad access detected [ 26.500043] [ 26.500124] Memory state around the buggy address: [ 26.500335] ffff888106257f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.500634] ffff888106257f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.500953] >ffff888106258000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.501594] ^ [ 26.501771] ffff888106258080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 26.502332] ffff888106258100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.502836] ==================================================================