Date
July 19, 2025, 11:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.043933] ================================================================== [ 16.044113] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 16.044186] Free of addr fff00000c6e6e000 by task kunit_try_catch/210 [ 16.044232] [ 16.044275] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.044363] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.044394] Hardware name: linux,dummy-virt (DT) [ 16.044432] Call trace: [ 16.044456] show_stack+0x20/0x38 (C) [ 16.044509] dump_stack_lvl+0x8c/0xd0 [ 16.044573] print_report+0x118/0x5d0 [ 16.046577] kasan_report_invalid_free+0xc0/0xe8 [ 16.047103] check_slab_allocation+0xd4/0x108 [ 16.047504] __kasan_slab_pre_free+0x2c/0x48 [ 16.048139] kmem_cache_free+0xf0/0x468 [ 16.048360] kmem_cache_double_free+0x190/0x3c8 [ 16.048934] kunit_try_run_case+0x170/0x3f0 [ 16.049152] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.049454] kthread+0x328/0x630 [ 16.049677] ret_from_fork+0x10/0x20 [ 16.049729] [ 16.049747] Allocated by task 210: [ 16.050477] kasan_save_stack+0x3c/0x68 [ 16.050728] kasan_save_track+0x20/0x40 [ 16.050798] kasan_save_alloc_info+0x40/0x58 [ 16.051547] __kasan_slab_alloc+0xa8/0xb0 [ 16.052008] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.053139] kmem_cache_double_free+0x12c/0x3c8 [ 16.053181] kunit_try_run_case+0x170/0x3f0 [ 16.053219] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.053668] kthread+0x328/0x630 [ 16.053810] ret_from_fork+0x10/0x20 [ 16.054515] [ 16.054558] Freed by task 210: [ 16.054588] kasan_save_stack+0x3c/0x68 [ 16.054628] kasan_save_track+0x20/0x40 [ 16.055194] kasan_save_free_info+0x4c/0x78 [ 16.055640] __kasan_slab_free+0x6c/0x98 [ 16.056278] kmem_cache_free+0x260/0x468 [ 16.056325] kmem_cache_double_free+0x140/0x3c8 [ 16.056670] kunit_try_run_case+0x170/0x3f0 [ 16.056792] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.056838] kthread+0x328/0x630 [ 16.056869] ret_from_fork+0x10/0x20 [ 16.056906] [ 16.057863] The buggy address belongs to the object at fff00000c6e6e000 [ 16.057863] which belongs to the cache test_cache of size 200 [ 16.058114] The buggy address is located 0 bytes inside of [ 16.058114] 200-byte region [fff00000c6e6e000, fff00000c6e6e0c8) [ 16.058181] [ 16.058203] The buggy address belongs to the physical page: [ 16.058857] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106e6e [ 16.059244] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.059630] page_type: f5(slab) [ 16.059882] raw: 0bfffe0000000000 fff00000c5b79780 dead000000000122 0000000000000000 [ 16.060260] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 16.060351] page dumped because: kasan: bad access detected [ 16.060384] [ 16.060402] Memory state around the buggy address: [ 16.060437] fff00000c6e6df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.060482] fff00000c6e6df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.061661] >fff00000c6e6e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.061858] ^ [ 16.061909] fff00000c6e6e080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 16.061985] fff00000c6e6e100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.062024] ==================================================================
[ 12.729652] ================================================================== [ 12.730331] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.731285] Free of addr ffff888102f6d000 by task kunit_try_catch/227 [ 12.731889] [ 12.732200] CPU: 1 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.732252] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.732263] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.732293] Call Trace: [ 12.732309] <TASK> [ 12.732326] dump_stack_lvl+0x73/0xb0 [ 12.732359] print_report+0xd1/0x610 [ 12.732382] ? __virt_addr_valid+0x1db/0x2d0 [ 12.732407] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.732555] ? kmem_cache_double_free+0x1e5/0x480 [ 12.732582] kasan_report_invalid_free+0x10a/0x130 [ 12.732606] ? kmem_cache_double_free+0x1e5/0x480 [ 12.732632] ? kmem_cache_double_free+0x1e5/0x480 [ 12.732655] check_slab_allocation+0x101/0x130 [ 12.732684] __kasan_slab_pre_free+0x28/0x40 [ 12.732705] kmem_cache_free+0xed/0x420 [ 12.732725] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.732745] ? kmem_cache_double_free+0x1e5/0x480 [ 12.732771] kmem_cache_double_free+0x1e5/0x480 [ 12.732795] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.732818] ? finish_task_switch.isra.0+0x153/0x700 [ 12.732842] ? __switch_to+0x47/0xf50 [ 12.732871] ? __pfx_read_tsc+0x10/0x10 [ 12.732892] ? ktime_get_ts64+0x86/0x230 [ 12.732916] kunit_try_run_case+0x1a5/0x480 [ 12.732941] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.732963] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.732988] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.733011] ? __kthread_parkme+0x82/0x180 [ 12.733031] ? preempt_count_sub+0x50/0x80 [ 12.733088] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.733111] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.733136] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.733159] kthread+0x337/0x6f0 [ 12.733177] ? trace_preempt_on+0x20/0xc0 [ 12.733201] ? __pfx_kthread+0x10/0x10 [ 12.733220] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.733241] ? calculate_sigpending+0x7b/0xa0 [ 12.733265] ? __pfx_kthread+0x10/0x10 [ 12.733285] ret_from_fork+0x116/0x1d0 [ 12.733304] ? __pfx_kthread+0x10/0x10 [ 12.733323] ret_from_fork_asm+0x1a/0x30 [ 12.733353] </TASK> [ 12.733364] [ 12.746864] Allocated by task 227: [ 12.747178] kasan_save_stack+0x45/0x70 [ 12.747695] kasan_save_track+0x18/0x40 [ 12.748190] kasan_save_alloc_info+0x3b/0x50 [ 12.748613] __kasan_slab_alloc+0x91/0xa0 [ 12.748980] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.749521] kmem_cache_double_free+0x14f/0x480 [ 12.750033] kunit_try_run_case+0x1a5/0x480 [ 12.750520] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.750906] kthread+0x337/0x6f0 [ 12.751027] ret_from_fork+0x116/0x1d0 [ 12.751614] ret_from_fork_asm+0x1a/0x30 [ 12.751979] [ 12.752135] Freed by task 227: [ 12.752459] kasan_save_stack+0x45/0x70 [ 12.752796] kasan_save_track+0x18/0x40 [ 12.752939] kasan_save_free_info+0x3f/0x60 [ 12.753221] __kasan_slab_free+0x56/0x70 [ 12.753610] kmem_cache_free+0x249/0x420 [ 12.753996] kmem_cache_double_free+0x16a/0x480 [ 12.754487] kunit_try_run_case+0x1a5/0x480 [ 12.754867] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.755172] kthread+0x337/0x6f0 [ 12.755379] ret_from_fork+0x116/0x1d0 [ 12.755725] ret_from_fork_asm+0x1a/0x30 [ 12.755924] [ 12.755995] The buggy address belongs to the object at ffff888102f6d000 [ 12.755995] which belongs to the cache test_cache of size 200 [ 12.757482] The buggy address is located 0 bytes inside of [ 12.757482] 200-byte region [ffff888102f6d000, ffff888102f6d0c8) [ 12.758061] [ 12.758271] The buggy address belongs to the physical page: [ 12.758801] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102f6d [ 12.759311] flags: 0x200000000000000(node=0|zone=2) [ 12.759484] page_type: f5(slab) [ 12.759621] raw: 0200000000000000 ffff8881018a9640 dead000000000122 0000000000000000 [ 12.759854] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.760093] page dumped because: kasan: bad access detected [ 12.760262] [ 12.760562] Memory state around the buggy address: [ 12.760808] ffff888102f6cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.761204] ffff888102f6cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.761477] >ffff888102f6d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.761771] ^ [ 12.761925] ffff888102f6d080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.762145] ffff888102f6d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.762398] ==================================================================