Date
July 8, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.744375] ================================================================== [ 31.744445] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 31.744668] Free of addr fff00000c9a8c000 by task kunit_try_catch/240 [ 31.744742] [ 31.744787] CPU: 0 UID: 0 PID: 240 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250708 #1 PREEMPT [ 31.744976] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.745013] Hardware name: linux,dummy-virt (DT) [ 31.745098] Call trace: [ 31.745152] show_stack+0x20/0x38 (C) [ 31.745280] dump_stack_lvl+0x8c/0xd0 [ 31.745359] print_report+0x118/0x5d0 [ 31.745408] kasan_report_invalid_free+0xc0/0xe8 [ 31.745460] check_slab_allocation+0xd4/0x108 [ 31.745510] __kasan_slab_pre_free+0x2c/0x48 [ 31.745559] kmem_cache_free+0xf0/0x468 [ 31.745609] kmem_cache_double_free+0x190/0x3c8 [ 31.745656] kunit_try_run_case+0x170/0x3f0 [ 31.745827] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.745912] kthread+0x328/0x630 [ 31.745981] ret_from_fork+0x10/0x20 [ 31.746074] [ 31.746138] Allocated by task 240: [ 31.746171] kasan_save_stack+0x3c/0x68 [ 31.746235] kasan_save_track+0x20/0x40 [ 31.746548] kasan_save_alloc_info+0x40/0x58 [ 31.746641] __kasan_slab_alloc+0xa8/0xb0 [ 31.746727] kmem_cache_alloc_noprof+0x10c/0x398 [ 31.746803] kmem_cache_double_free+0x12c/0x3c8 [ 31.746855] kunit_try_run_case+0x170/0x3f0 [ 31.746893] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.746937] kthread+0x328/0x630 [ 31.746979] ret_from_fork+0x10/0x20 [ 31.747015] [ 31.747055] Freed by task 240: [ 31.747085] kasan_save_stack+0x3c/0x68 [ 31.747137] kasan_save_track+0x20/0x40 [ 31.747173] kasan_save_free_info+0x4c/0x78 [ 31.747219] __kasan_slab_free+0x6c/0x98 [ 31.747258] kmem_cache_free+0x260/0x468 [ 31.747296] kmem_cache_double_free+0x140/0x3c8 [ 31.747336] kunit_try_run_case+0x170/0x3f0 [ 31.747375] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.747419] kthread+0x328/0x630 [ 31.747451] ret_from_fork+0x10/0x20 [ 31.747614] [ 31.747658] The buggy address belongs to the object at fff00000c9a8c000 [ 31.747658] which belongs to the cache test_cache of size 200 [ 31.747745] The buggy address is located 0 bytes inside of [ 31.747745] 200-byte region [fff00000c9a8c000, fff00000c9a8c0c8) [ 31.747858] [ 31.747888] The buggy address belongs to the physical page: [ 31.747939] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a8c [ 31.748169] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.748278] page_type: f5(slab) [ 31.748323] raw: 0bfffe0000000000 fff00000c5c50b40 dead000000000122 0000000000000000 [ 31.748392] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 31.748486] page dumped because: kasan: bad access detected [ 31.748584] [ 31.748631] Memory state around the buggy address: [ 31.748707] fff00000c9a8bf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.748763] fff00000c9a8bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 31.748805] >fff00000c9a8c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.748842] ^ [ 31.748887] fff00000c9a8c080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 31.749060] fff00000c9a8c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.749200] ==================================================================
[ 24.045498] ================================================================== [ 24.046187] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 24.046558] Free of addr ffff8881062bb000 by task kunit_try_catch/257 [ 24.046974] [ 24.047404] CPU: 1 UID: 0 PID: 257 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250708 #1 PREEMPT(voluntary) [ 24.047486] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.047499] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.047524] Call Trace: [ 24.047539] <TASK> [ 24.047561] dump_stack_lvl+0x73/0xb0 [ 24.047599] print_report+0xd1/0x610 [ 24.047624] ? __virt_addr_valid+0x1db/0x2d0 [ 24.047653] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.047681] ? kmem_cache_double_free+0x1e5/0x480 [ 24.047709] kasan_report_invalid_free+0x10a/0x130 [ 24.047734] ? kmem_cache_double_free+0x1e5/0x480 [ 24.048160] ? kmem_cache_double_free+0x1e5/0x480 [ 24.048193] check_slab_allocation+0x101/0x130 [ 24.048216] __kasan_slab_pre_free+0x28/0x40 [ 24.048253] kmem_cache_free+0xed/0x420 [ 24.048283] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 24.048310] ? kmem_cache_double_free+0x1e5/0x480 [ 24.048339] kmem_cache_double_free+0x1e5/0x480 [ 24.048366] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 24.048392] ? finish_task_switch.isra.0+0x153/0x700 [ 24.048416] ? __switch_to+0x47/0xf50 [ 24.048449] ? __pfx_read_tsc+0x10/0x10 [ 24.048475] ? ktime_get_ts64+0x86/0x230 [ 24.048504] kunit_try_run_case+0x1a5/0x480 [ 24.048529] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.048550] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 24.048574] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.048603] ? __kthread_parkme+0x82/0x180 [ 24.048624] ? preempt_count_sub+0x50/0x80 [ 24.048648] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.048670] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.048697] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.048723] kthread+0x337/0x6f0 [ 24.048939] ? trace_preempt_on+0x20/0xc0 [ 24.048979] ? __pfx_kthread+0x10/0x10 [ 24.049003] ? _raw_spin_unlock_irq+0x47/0x80 [ 24.049031] ? calculate_sigpending+0x7b/0xa0 [ 24.049060] ? __pfx_kthread+0x10/0x10 [ 24.049084] ret_from_fork+0x116/0x1d0 [ 24.049104] ? __pfx_kthread+0x10/0x10 [ 24.049127] ret_from_fork_asm+0x1a/0x30 [ 24.049163] </TASK> [ 24.049175] [ 24.060719] Allocated by task 257: [ 24.061208] kasan_save_stack+0x45/0x70 [ 24.061461] kasan_save_track+0x18/0x40 [ 24.061757] kasan_save_alloc_info+0x3b/0x50 [ 24.062112] __kasan_slab_alloc+0x91/0xa0 [ 24.062298] kmem_cache_alloc_noprof+0x123/0x3f0 [ 24.062546] kmem_cache_double_free+0x14f/0x480 [ 24.062714] kunit_try_run_case+0x1a5/0x480 [ 24.063120] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.063525] kthread+0x337/0x6f0 [ 24.063693] ret_from_fork+0x116/0x1d0 [ 24.063868] ret_from_fork_asm+0x1a/0x30 [ 24.064377] [ 24.064481] Freed by task 257: [ 24.064649] kasan_save_stack+0x45/0x70 [ 24.065053] kasan_save_track+0x18/0x40 [ 24.065262] kasan_save_free_info+0x3f/0x60 [ 24.065473] __kasan_slab_free+0x56/0x70 [ 24.065655] kmem_cache_free+0x249/0x420 [ 24.066091] kmem_cache_double_free+0x16a/0x480 [ 24.066550] kunit_try_run_case+0x1a5/0x480 [ 24.066701] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.067272] kthread+0x337/0x6f0 [ 24.067587] ret_from_fork+0x116/0x1d0 [ 24.067785] ret_from_fork_asm+0x1a/0x30 [ 24.068146] [ 24.068353] The buggy address belongs to the object at ffff8881062bb000 [ 24.068353] which belongs to the cache test_cache of size 200 [ 24.069279] The buggy address is located 0 bytes inside of [ 24.069279] 200-byte region [ffff8881062bb000, ffff8881062bb0c8) [ 24.069713] [ 24.069917] The buggy address belongs to the physical page: [ 24.070612] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1062bb [ 24.071449] flags: 0x200000000000000(node=0|zone=2) [ 24.071863] page_type: f5(slab) [ 24.072135] raw: 0200000000000000 ffff888101d3aa00 dead000000000122 0000000000000000 [ 24.072655] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 24.073287] page dumped because: kasan: bad access detected [ 24.073712] [ 24.073902] Memory state around the buggy address: [ 24.074461] ffff8881062baf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.074694] ffff8881062baf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.075543] >ffff8881062bb000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.076046] ^ [ 24.076165] ffff8881062bb080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 24.076390] ffff8881062bb100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.076597] ==================================================================