Date
July 23, 2025, 2:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.600464] ================================================================== [ 15.600551] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 15.600888] Free of addr fff00000c3ec4160 by task kunit_try_catch/192 [ 15.600951] [ 15.600985] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 15.601466] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.601584] Hardware name: linux,dummy-virt (DT) [ 15.601622] Call trace: [ 15.601664] show_stack+0x20/0x38 (C) [ 15.601726] dump_stack_lvl+0x8c/0xd0 [ 15.601953] print_report+0x118/0x5d0 [ 15.602297] kasan_report_invalid_free+0xc0/0xe8 [ 15.602649] check_slab_allocation+0xd4/0x108 [ 15.602902] __kasan_slab_pre_free+0x2c/0x48 [ 15.603070] kfree+0xe8/0x3c8 [ 15.603492] kfree_sensitive+0x3c/0xb0 [ 15.603733] kmalloc_double_kzfree+0x168/0x308 [ 15.603795] kunit_try_run_case+0x170/0x3f0 [ 15.603843] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.603911] kthread+0x328/0x630 [ 15.604335] ret_from_fork+0x10/0x20 [ 15.604547] [ 15.604628] Allocated by task 192: [ 15.604842] kasan_save_stack+0x3c/0x68 [ 15.605009] kasan_save_track+0x20/0x40 [ 15.605201] kasan_save_alloc_info+0x40/0x58 [ 15.605328] __kasan_kmalloc+0xd4/0xd8 [ 15.605443] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.605495] kmalloc_double_kzfree+0xb8/0x308 [ 15.605687] kunit_try_run_case+0x170/0x3f0 [ 15.605737] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.605968] kthread+0x328/0x630 [ 15.606034] ret_from_fork+0x10/0x20 [ 15.606419] [ 15.606449] Freed by task 192: [ 15.606707] kasan_save_stack+0x3c/0x68 [ 15.606887] kasan_save_track+0x20/0x40 [ 15.607050] kasan_save_free_info+0x4c/0x78 [ 15.607203] __kasan_slab_free+0x6c/0x98 [ 15.607301] kfree+0x214/0x3c8 [ 15.607414] kfree_sensitive+0x80/0xb0 [ 15.607451] kmalloc_double_kzfree+0x11c/0x308 [ 15.607906] kunit_try_run_case+0x170/0x3f0 [ 15.608041] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.608175] kthread+0x328/0x630 [ 15.608273] ret_from_fork+0x10/0x20 [ 15.608406] [ 15.608465] The buggy address belongs to the object at fff00000c3ec4160 [ 15.608465] which belongs to the cache kmalloc-16 of size 16 [ 15.608553] The buggy address is located 0 bytes inside of [ 15.608553] 16-byte region [fff00000c3ec4160, fff00000c3ec4170) [ 15.608823] [ 15.608975] The buggy address belongs to the physical page: [ 15.609300] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ec4 [ 15.609409] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.609489] page_type: f5(slab) [ 15.609705] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.609809] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.610302] page dumped because: kasan: bad access detected [ 15.610417] [ 15.610534] Memory state around the buggy address: [ 15.610716] fff00000c3ec4000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.610823] fff00000c3ec4080: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.611025] >fff00000c3ec4100: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.611076] ^ [ 15.611118] fff00000c3ec4180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.611390] fff00000c3ec4200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.611696] ==================================================================
[ 12.966835] ================================================================== [ 12.967100] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.967528] Free of addr ffff8881025ca060 by task kunit_try_catch/209 [ 12.968244] [ 12.968419] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 12.968461] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.968472] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.968494] Call Trace: [ 12.968510] <TASK> [ 12.968525] dump_stack_lvl+0x73/0xb0 [ 12.968554] print_report+0xd1/0x610 [ 12.968575] ? __virt_addr_valid+0x1db/0x2d0 [ 12.968596] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.968617] ? kfree_sensitive+0x2e/0x90 [ 12.968638] kasan_report_invalid_free+0x10a/0x130 [ 12.968661] ? kfree_sensitive+0x2e/0x90 [ 12.968682] ? kfree_sensitive+0x2e/0x90 [ 12.968701] check_slab_allocation+0x101/0x130 [ 12.968721] __kasan_slab_pre_free+0x28/0x40 [ 12.968741] kfree+0xf0/0x3f0 [ 12.968762] ? kfree_sensitive+0x2e/0x90 [ 12.968783] kfree_sensitive+0x2e/0x90 [ 12.968802] kmalloc_double_kzfree+0x19c/0x350 [ 12.968836] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.968862] ? __schedule+0x10c6/0x2b60 [ 12.968884] ? __pfx_read_tsc+0x10/0x10 [ 12.968904] ? ktime_get_ts64+0x86/0x230 [ 12.968926] kunit_try_run_case+0x1a5/0x480 [ 12.968949] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.968971] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.968994] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.969016] ? __kthread_parkme+0x82/0x180 [ 12.969035] ? preempt_count_sub+0x50/0x80 [ 12.969057] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.969079] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.969101] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.969124] kthread+0x337/0x6f0 [ 12.969142] ? trace_preempt_on+0x20/0xc0 [ 12.969164] ? __pfx_kthread+0x10/0x10 [ 12.969194] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.969214] ? calculate_sigpending+0x7b/0xa0 [ 12.969237] ? __pfx_kthread+0x10/0x10 [ 12.969258] ret_from_fork+0x116/0x1d0 [ 12.969275] ? __pfx_kthread+0x10/0x10 [ 12.969295] ret_from_fork_asm+0x1a/0x30 [ 12.969324] </TASK> [ 12.969333] [ 12.983217] Allocated by task 209: [ 12.983601] kasan_save_stack+0x45/0x70 [ 12.983985] kasan_save_track+0x18/0x40 [ 12.984353] kasan_save_alloc_info+0x3b/0x50 [ 12.984553] __kasan_kmalloc+0xb7/0xc0 [ 12.984689] __kmalloc_cache_noprof+0x189/0x420 [ 12.984860] kmalloc_double_kzfree+0xa9/0x350 [ 12.985358] kunit_try_run_case+0x1a5/0x480 [ 12.985797] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.986301] kthread+0x337/0x6f0 [ 12.986635] ret_from_fork+0x116/0x1d0 [ 12.987004] ret_from_fork_asm+0x1a/0x30 [ 12.987417] [ 12.987576] Freed by task 209: [ 12.987951] kasan_save_stack+0x45/0x70 [ 12.988216] kasan_save_track+0x18/0x40 [ 12.988479] kasan_save_free_info+0x3f/0x60 [ 12.988731] __kasan_slab_free+0x56/0x70 [ 12.989227] kfree+0x222/0x3f0 [ 12.989514] kfree_sensitive+0x67/0x90 [ 12.989835] kmalloc_double_kzfree+0x12b/0x350 [ 12.989988] kunit_try_run_case+0x1a5/0x480 [ 12.990157] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.990399] kthread+0x337/0x6f0 [ 12.990537] ret_from_fork+0x116/0x1d0 [ 12.990670] ret_from_fork_asm+0x1a/0x30 [ 12.990808] [ 12.990894] The buggy address belongs to the object at ffff8881025ca060 [ 12.990894] which belongs to the cache kmalloc-16 of size 16 [ 12.991603] The buggy address is located 0 bytes inside of [ 12.991603] 16-byte region [ffff8881025ca060, ffff8881025ca070) [ 12.992772] [ 12.992950] The buggy address belongs to the physical page: [ 12.993461] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025ca [ 12.994263] flags: 0x200000000000000(node=0|zone=2) [ 12.994707] page_type: f5(slab) [ 12.995027] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.995594] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.995847] page dumped because: kasan: bad access detected [ 12.996023] [ 12.996106] Memory state around the buggy address: [ 12.996519] ffff8881025c9f00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.997367] ffff8881025c9f80: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.998007] >ffff8881025ca000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.998729] ^ [ 12.999330] ffff8881025ca080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.000140] ffff8881025ca100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.000588] ==================================================================