Date
July 3, 2025, 3:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.779594] ================================================================== [ 15.779668] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 15.779717] Free of addr fff00000c55f0940 by task kunit_try_catch/195 [ 15.780089] [ 15.780141] CPU: 1 UID: 0 PID: 195 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT [ 15.780572] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.780618] Hardware name: linux,dummy-virt (DT) [ 15.780954] Call trace: [ 15.781082] show_stack+0x20/0x38 (C) [ 15.781139] dump_stack_lvl+0x8c/0xd0 [ 15.781205] print_report+0x118/0x608 [ 15.781259] kasan_report_invalid_free+0xc0/0xe8 [ 15.781610] check_slab_allocation+0xd4/0x108 [ 15.781732] __kasan_slab_pre_free+0x2c/0x48 [ 15.781984] kfree+0xe8/0x3c8 [ 15.782331] kfree_sensitive+0x3c/0xb0 [ 15.782541] kmalloc_double_kzfree+0x168/0x308 [ 15.782668] kunit_try_run_case+0x170/0x3f0 [ 15.782831] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.782888] kthread+0x328/0x630 [ 15.783072] ret_from_fork+0x10/0x20 [ 15.783260] [ 15.783387] Allocated by task 195: [ 15.783779] kasan_save_stack+0x3c/0x68 [ 15.783965] kasan_save_track+0x20/0x40 [ 15.784365] kasan_save_alloc_info+0x40/0x58 [ 15.784627] __kasan_kmalloc+0xd4/0xd8 [ 15.784669] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.784957] kmalloc_double_kzfree+0xb8/0x308 [ 15.785202] kunit_try_run_case+0x170/0x3f0 [ 15.785313] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.785361] kthread+0x328/0x630 [ 15.785572] ret_from_fork+0x10/0x20 [ 15.785895] [ 15.785930] Freed by task 195: [ 15.786198] kasan_save_stack+0x3c/0x68 [ 15.786297] kasan_save_track+0x20/0x40 [ 15.786334] kasan_save_free_info+0x4c/0x78 [ 15.786382] __kasan_slab_free+0x6c/0x98 [ 15.786418] kfree+0x214/0x3c8 [ 15.786454] kfree_sensitive+0x80/0xb0 [ 15.786490] kmalloc_double_kzfree+0x11c/0x308 [ 15.787140] kunit_try_run_case+0x170/0x3f0 [ 15.787280] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.787435] kthread+0x328/0x630 [ 15.787518] ret_from_fork+0x10/0x20 [ 15.787591] [ 15.787741] The buggy address belongs to the object at fff00000c55f0940 [ 15.787741] which belongs to the cache kmalloc-16 of size 16 [ 15.787983] The buggy address is located 0 bytes inside of [ 15.787983] 16-byte region [fff00000c55f0940, fff00000c55f0950) [ 15.788134] [ 15.788223] The buggy address belongs to the physical page: [ 15.788263] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1055f0 [ 15.788315] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.788398] page_type: f5(slab) [ 15.788446] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.788505] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.788554] page dumped because: kasan: bad access detected [ 15.788600] [ 15.788620] Memory state around the buggy address: [ 15.788652] fff00000c55f0800: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.788694] fff00000c55f0880: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.788736] >fff00000c55f0900: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 15.788773] ^ [ 15.788818] fff00000c55f0980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.788860] fff00000c55f0a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.788899] ==================================================================
[ 11.554818] ================================================================== [ 11.555157] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.555841] Free of addr ffff888102224120 by task kunit_try_catch/211 [ 11.556564] [ 11.556679] CPU: 0 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 11.556724] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.556737] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.556757] Call Trace: [ 11.556769] <TASK> [ 11.556785] dump_stack_lvl+0x73/0xb0 [ 11.556810] print_report+0xd1/0x650 [ 11.556833] ? __virt_addr_valid+0x1db/0x2d0 [ 11.556855] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.556877] ? kfree_sensitive+0x2e/0x90 [ 11.556900] kasan_report_invalid_free+0x10a/0x130 [ 11.556925] ? kfree_sensitive+0x2e/0x90 [ 11.556947] ? kfree_sensitive+0x2e/0x90 [ 11.556968] check_slab_allocation+0x101/0x130 [ 11.556990] __kasan_slab_pre_free+0x28/0x40 [ 11.557011] kfree+0xf0/0x3f0 [ 11.557029] ? kfree_sensitive+0x2e/0x90 [ 11.557052] kfree_sensitive+0x2e/0x90 [ 11.557073] kmalloc_double_kzfree+0x19c/0x350 [ 11.557092] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.557113] ? __schedule+0x10cc/0x2b60 [ 11.557135] ? __pfx_read_tsc+0x10/0x10 [ 11.557155] ? ktime_get_ts64+0x86/0x230 [ 11.557179] kunit_try_run_case+0x1a5/0x480 [ 11.557203] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.557225] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.557261] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.557284] ? __kthread_parkme+0x82/0x180 [ 11.557306] ? preempt_count_sub+0x50/0x80 [ 11.557331] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.557355] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.557378] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.557401] kthread+0x337/0x6f0 [ 11.557592] ? trace_preempt_on+0x20/0xc0 [ 11.557623] ? __pfx_kthread+0x10/0x10 [ 11.557641] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.557663] ? calculate_sigpending+0x7b/0xa0 [ 11.557685] ? __pfx_kthread+0x10/0x10 [ 11.557703] ret_from_fork+0x41/0x80 [ 11.557724] ? __pfx_kthread+0x10/0x10 [ 11.557741] ret_from_fork_asm+0x1a/0x30 [ 11.557771] </TASK> [ 11.557782] [ 11.566429] Allocated by task 211: [ 11.566562] kasan_save_stack+0x45/0x70 [ 11.567030] kasan_save_track+0x18/0x40 [ 11.567256] kasan_save_alloc_info+0x3b/0x50 [ 11.567536] __kasan_kmalloc+0xb7/0xc0 [ 11.567806] __kmalloc_cache_noprof+0x189/0x420 [ 11.568009] kmalloc_double_kzfree+0xa9/0x350 [ 11.568201] kunit_try_run_case+0x1a5/0x480 [ 11.568503] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.568688] kthread+0x337/0x6f0 [ 11.568806] ret_from_fork+0x41/0x80 [ 11.568935] ret_from_fork_asm+0x1a/0x30 [ 11.569115] [ 11.569222] Freed by task 211: [ 11.569496] kasan_save_stack+0x45/0x70 [ 11.569736] kasan_save_track+0x18/0x40 [ 11.569873] kasan_save_free_info+0x3f/0x60 [ 11.570014] __kasan_slab_free+0x56/0x70 [ 11.570151] kfree+0x222/0x3f0 [ 11.570519] kfree_sensitive+0x67/0x90 [ 11.570792] kmalloc_double_kzfree+0x12b/0x350 [ 11.571014] kunit_try_run_case+0x1a5/0x480 [ 11.571219] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.571823] kthread+0x337/0x6f0 [ 11.571977] ret_from_fork+0x41/0x80 [ 11.572150] ret_from_fork_asm+0x1a/0x30 [ 11.572403] [ 11.572478] The buggy address belongs to the object at ffff888102224120 [ 11.572478] which belongs to the cache kmalloc-16 of size 16 [ 11.572828] The buggy address is located 0 bytes inside of [ 11.572828] 16-byte region [ffff888102224120, ffff888102224130) [ 11.573483] [ 11.573566] The buggy address belongs to the physical page: [ 11.573740] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102224 [ 11.573981] flags: 0x200000000000000(node=0|zone=2) [ 11.574440] page_type: f5(slab) [ 11.574614] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.575381] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.575857] page dumped because: kasan: bad access detected [ 11.576066] [ 11.576163] Memory state around the buggy address: [ 11.576471] ffff888102224000: 00 02 fc fc 00 02 fc fc fa fb fc fc fa fb fc fc [ 11.576690] ffff888102224080: fa fb fc fc 00 05 fc fc fa fb fc fc fa fb fc fc [ 11.577173] >ffff888102224100: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 11.577504] ^ [ 11.577791] ffff888102224180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.578012] ffff888102224200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.578339] ==================================================================