Date
June 23, 2025, 1:39 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 25.026595] ================================================================== [ 25.028288] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 25.028424] Free of addr fff00000c5e9dde0 by task kunit_try_catch/194 [ 25.028555] [ 25.028662] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc1 #1 PREEMPT [ 25.029056] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.029169] Hardware name: linux,dummy-virt (DT) [ 25.029262] Call trace: [ 25.029320] show_stack+0x20/0x38 (C) [ 25.029451] dump_stack_lvl+0x8c/0xd0 [ 25.029760] print_report+0x118/0x608 [ 25.030450] kasan_report_invalid_free+0xc0/0xe8 [ 25.030729] check_slab_allocation+0xd4/0x108 [ 25.030855] __kasan_slab_pre_free+0x2c/0x48 [ 25.030983] kfree+0xe8/0x3c8 [ 25.031316] kfree_sensitive+0x3c/0xb0 [ 25.031845] kmalloc_double_kzfree+0x168/0x308 [ 25.032240] kunit_try_run_case+0x170/0x3f0 [ 25.032552] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 25.032769] kthread+0x328/0x630 [ 25.032887] ret_from_fork+0x10/0x20 [ 25.033000] [ 25.033108] Allocated by task 194: [ 25.033238] kasan_save_stack+0x3c/0x68 [ 25.033408] kasan_save_track+0x20/0x40 [ 25.033517] kasan_save_alloc_info+0x40/0x58 [ 25.033634] __kasan_kmalloc+0xd4/0xd8 [ 25.033741] __kmalloc_cache_noprof+0x16c/0x3c0 [ 25.034070] kmalloc_double_kzfree+0xb8/0x308 [ 25.034177] kunit_try_run_case+0x170/0x3f0 [ 25.034660] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 25.034907] kthread+0x328/0x630 [ 25.035015] ret_from_fork+0x10/0x20 [ 25.035278] [ 25.035378] Freed by task 194: [ 25.035459] kasan_save_stack+0x3c/0x68 [ 25.035540] kasan_save_track+0x20/0x40 [ 25.035632] kasan_save_free_info+0x4c/0x78 [ 25.035848] __kasan_slab_free+0x6c/0x98 [ 25.036046] kfree+0x214/0x3c8 [ 25.036173] kfree_sensitive+0x80/0xb0 [ 25.036359] kmalloc_double_kzfree+0x11c/0x308 [ 25.036492] kunit_try_run_case+0x170/0x3f0 [ 25.036589] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 25.036720] kthread+0x328/0x630 [ 25.036832] ret_from_fork+0x10/0x20 [ 25.036981] [ 25.037082] The buggy address belongs to the object at fff00000c5e9dde0 [ 25.037082] which belongs to the cache kmalloc-16 of size 16 [ 25.037632] The buggy address is located 0 bytes inside of [ 25.037632] 16-byte region [fff00000c5e9dde0, fff00000c5e9ddf0) [ 25.037790] [ 25.037849] The buggy address belongs to the physical page: [ 25.037927] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105e9d [ 25.038369] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 25.038517] page_type: f5(slab) [ 25.038708] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 25.039006] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 25.039108] page dumped because: kasan: bad access detected [ 25.039189] [ 25.039237] Memory state around the buggy address: [ 25.039455] fff00000c5e9dc80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 25.039566] fff00000c5e9dd00: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 25.039666] >fff00000c5e9dd80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 25.039750] ^ [ 25.039874] fff00000c5e9de00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.039980] fff00000c5e9de80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.040073] ==================================================================
[ 17.822225] ================================================================== [ 17.822885] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 17.823449] Free of addr ffff888102175280 by task kunit_try_catch/213 [ 17.823950] [ 17.824222] CPU: 1 UID: 0 PID: 213 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc1 #1 PREEMPT(voluntary) [ 17.824340] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.824374] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.824428] Call Trace: [ 17.824464] <TASK> [ 17.824504] dump_stack_lvl+0x73/0xb0 [ 17.824578] print_report+0xd1/0x650 [ 17.824877] ? __virt_addr_valid+0x1db/0x2d0 [ 17.824951] ? kasan_complete_mode_report_info+0x64/0x200 [ 17.825021] ? kfree_sensitive+0x2e/0x90 [ 17.825090] kasan_report_invalid_free+0x10a/0x130 [ 17.825166] ? kfree_sensitive+0x2e/0x90 [ 17.825282] ? kfree_sensitive+0x2e/0x90 [ 17.825326] check_slab_allocation+0x101/0x130 [ 17.825363] __kasan_slab_pre_free+0x28/0x40 [ 17.825395] kfree+0xf0/0x3f0 [ 17.825421] ? kfree_sensitive+0x2e/0x90 [ 17.825455] kfree_sensitive+0x2e/0x90 [ 17.825486] kmalloc_double_kzfree+0x19c/0x350 [ 17.825513] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 17.825543] ? __schedule+0x10cc/0x2b60 [ 17.825577] ? __pfx_read_tsc+0x10/0x10 [ 17.825676] ? ktime_get_ts64+0x86/0x230 [ 17.825780] kunit_try_run_case+0x1a5/0x480 [ 17.825868] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.825946] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 17.825999] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.826034] ? __kthread_parkme+0x82/0x180 [ 17.826066] ? preempt_count_sub+0x50/0x80 [ 17.826100] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.826134] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.826167] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.826200] kthread+0x337/0x6f0 [ 17.826264] ? trace_preempt_on+0x20/0xc0 [ 17.826306] ? __pfx_kthread+0x10/0x10 [ 17.826331] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.826361] ? calculate_sigpending+0x7b/0xa0 [ 17.826392] ? __pfx_kthread+0x10/0x10 [ 17.826417] ret_from_fork+0x41/0x80 [ 17.826447] ? __pfx_kthread+0x10/0x10 [ 17.826471] ret_from_fork_asm+0x1a/0x30 [ 17.826512] </TASK> [ 17.826526] [ 17.846776] Allocated by task 213: [ 17.847186] kasan_save_stack+0x45/0x70 [ 17.848312] kasan_save_track+0x18/0x40 [ 17.848849] kasan_save_alloc_info+0x3b/0x50 [ 17.849687] __kasan_kmalloc+0xb7/0xc0 [ 17.850251] __kmalloc_cache_noprof+0x189/0x420 [ 17.850991] kmalloc_double_kzfree+0xa9/0x350 [ 17.851536] kunit_try_run_case+0x1a5/0x480 [ 17.851926] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.852922] kthread+0x337/0x6f0 [ 17.853453] ret_from_fork+0x41/0x80 [ 17.853911] ret_from_fork_asm+0x1a/0x30 [ 17.854333] [ 17.854545] Freed by task 213: [ 17.855051] kasan_save_stack+0x45/0x70 [ 17.855449] kasan_save_track+0x18/0x40 [ 17.856265] kasan_save_free_info+0x3f/0x60 [ 17.856890] __kasan_slab_free+0x56/0x70 [ 17.857287] kfree+0x222/0x3f0 [ 17.857674] kfree_sensitive+0x67/0x90 [ 17.858054] kmalloc_double_kzfree+0x12b/0x350 [ 17.858505] kunit_try_run_case+0x1a5/0x480 [ 17.858948] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.859414] kthread+0x337/0x6f0 [ 17.860282] ret_from_fork+0x41/0x80 [ 17.860806] ret_from_fork_asm+0x1a/0x30 [ 17.861154] [ 17.861387] The buggy address belongs to the object at ffff888102175280 [ 17.861387] which belongs to the cache kmalloc-16 of size 16 [ 17.862579] The buggy address is located 0 bytes inside of [ 17.862579] 16-byte region [ffff888102175280, ffff888102175290) [ 17.863548] [ 17.864362] The buggy address belongs to the physical page: [ 17.864950] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102175 [ 17.865877] flags: 0x200000000000000(node=0|zone=2) [ 17.866315] page_type: f5(slab) [ 17.866832] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 17.867510] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 17.868488] page dumped because: kasan: bad access detected [ 17.869128] [ 17.869382] Memory state around the buggy address: [ 17.869854] ffff888102175180: 00 04 fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 17.870418] ffff888102175200: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 17.870981] >ffff888102175280: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.871574] ^ [ 17.872418] ffff888102175300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.873098] ffff888102175380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.874145] ==================================================================