Date
July 8, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.572252] ================================================================== [ 19.572322] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 19.572556] Free of addr fff00000c58c2b60 by task kunit_try_catch/192 [ 19.572880] [ 19.572934] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.573079] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.573181] Hardware name: linux,dummy-virt (DT) [ 19.573314] Call trace: [ 19.573339] show_stack+0x20/0x38 (C) [ 19.573389] dump_stack_lvl+0x8c/0xd0 [ 19.573443] print_report+0x118/0x608 [ 19.573555] kasan_report_invalid_free+0xc0/0xe8 [ 19.573902] check_slab_allocation+0xd4/0x108 [ 19.574007] __kasan_slab_pre_free+0x2c/0x48 [ 19.574095] kfree+0xe8/0x3c8 [ 19.574140] kfree_sensitive+0x3c/0xb0 [ 19.574523] kmalloc_double_kzfree+0x168/0x308 [ 19.574704] kunit_try_run_case+0x170/0x3f0 [ 19.574761] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.574835] kthread+0x328/0x630 [ 19.574877] ret_from_fork+0x10/0x20 [ 19.574985] [ 19.575119] Allocated by task 192: [ 19.575250] kasan_save_stack+0x3c/0x68 [ 19.575300] kasan_save_track+0x20/0x40 [ 19.575339] kasan_save_alloc_info+0x40/0x58 [ 19.575583] __kasan_kmalloc+0xd4/0xd8 [ 19.575631] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.575672] kmalloc_double_kzfree+0xb8/0x308 [ 19.575711] kunit_try_run_case+0x170/0x3f0 [ 19.575749] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.575795] kthread+0x328/0x630 [ 19.575828] ret_from_fork+0x10/0x20 [ 19.575894] [ 19.575916] Freed by task 192: [ 19.576046] kasan_save_stack+0x3c/0x68 [ 19.576249] kasan_save_track+0x20/0x40 [ 19.576295] kasan_save_free_info+0x4c/0x78 [ 19.576334] __kasan_slab_free+0x6c/0x98 [ 19.576372] kfree+0x214/0x3c8 [ 19.576492] kfree_sensitive+0x80/0xb0 [ 19.576813] kmalloc_double_kzfree+0x11c/0x308 [ 19.576857] kunit_try_run_case+0x170/0x3f0 [ 19.576895] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.576939] kthread+0x328/0x630 [ 19.577147] ret_from_fork+0x10/0x20 [ 19.577254] [ 19.577283] The buggy address belongs to the object at fff00000c58c2b60 [ 19.577283] which belongs to the cache kmalloc-16 of size 16 [ 19.577345] The buggy address is located 0 bytes inside of [ 19.577345] 16-byte region [fff00000c58c2b60, fff00000c58c2b70) [ 19.577403] [ 19.577422] The buggy address belongs to the physical page: [ 19.577453] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058c2 [ 19.577504] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.577563] page_type: f5(slab) [ 19.577601] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 19.577930] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.577975] page dumped because: kasan: bad access detected [ 19.578007] [ 19.578025] Memory state around the buggy address: [ 19.578060] fff00000c58c2a00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.578102] fff00000c58c2a80: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.578146] >fff00000c58c2b00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.578197] ^ [ 19.578237] fff00000c58c2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.578289] fff00000c58c2c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.578328] ==================================================================
[ 12.881591] ================================================================== [ 12.881938] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.882315] Free of addr ffff8881026260c0 by task kunit_try_catch/210 [ 12.883315] [ 12.883445] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.883489] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.883500] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.883521] Call Trace: [ 12.883533] <TASK> [ 12.883551] dump_stack_lvl+0x73/0xb0 [ 12.883582] print_report+0xd1/0x650 [ 12.883620] ? __virt_addr_valid+0x1db/0x2d0 [ 12.883644] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.883667] ? kfree_sensitive+0x2e/0x90 [ 12.883689] kasan_report_invalid_free+0x10a/0x130 [ 12.883714] ? kfree_sensitive+0x2e/0x90 [ 12.883735] ? kfree_sensitive+0x2e/0x90 [ 12.883754] check_slab_allocation+0x101/0x130 [ 12.883776] __kasan_slab_pre_free+0x28/0x40 [ 12.883797] kfree+0xf0/0x3f0 [ 12.883818] ? kfree_sensitive+0x2e/0x90 [ 12.883840] kfree_sensitive+0x2e/0x90 [ 12.883859] kmalloc_double_kzfree+0x19c/0x350 [ 12.883882] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.883907] ? __schedule+0x10cc/0x2b60 [ 12.883929] ? __pfx_read_tsc+0x10/0x10 [ 12.883950] ? ktime_get_ts64+0x86/0x230 [ 12.884041] kunit_try_run_case+0x1a5/0x480 [ 12.884067] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.884090] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.884115] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.884138] ? __kthread_parkme+0x82/0x180 [ 12.884159] ? preempt_count_sub+0x50/0x80 [ 12.884183] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.884207] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.884231] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.884256] kthread+0x337/0x6f0 [ 12.884274] ? trace_preempt_on+0x20/0xc0 [ 12.884297] ? __pfx_kthread+0x10/0x10 [ 12.884317] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.884338] ? calculate_sigpending+0x7b/0xa0 [ 12.884362] ? __pfx_kthread+0x10/0x10 [ 12.884383] ret_from_fork+0x116/0x1d0 [ 12.884401] ? __pfx_kthread+0x10/0x10 [ 12.884421] ret_from_fork_asm+0x1a/0x30 [ 12.884452] </TASK> [ 12.884462] [ 12.892609] Allocated by task 210: [ 12.892757] kasan_save_stack+0x45/0x70 [ 12.892912] kasan_save_track+0x18/0x40 [ 12.893045] kasan_save_alloc_info+0x3b/0x50 [ 12.893449] __kasan_kmalloc+0xb7/0xc0 [ 12.893686] __kmalloc_cache_noprof+0x189/0x420 [ 12.893958] kmalloc_double_kzfree+0xa9/0x350 [ 12.894377] kunit_try_run_case+0x1a5/0x480 [ 12.894637] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.894809] kthread+0x337/0x6f0 [ 12.895053] ret_from_fork+0x116/0x1d0 [ 12.895264] ret_from_fork_asm+0x1a/0x30 [ 12.895464] [ 12.895560] Freed by task 210: [ 12.895731] kasan_save_stack+0x45/0x70 [ 12.895874] kasan_save_track+0x18/0x40 [ 12.896003] kasan_save_free_info+0x3f/0x60 [ 12.896144] __kasan_slab_free+0x56/0x70 [ 12.896583] kfree+0x222/0x3f0 [ 12.896757] kfree_sensitive+0x67/0x90 [ 12.896942] kmalloc_double_kzfree+0x12b/0x350 [ 12.897137] kunit_try_run_case+0x1a5/0x480 [ 12.897277] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.897444] kthread+0x337/0x6f0 [ 12.897878] ret_from_fork+0x116/0x1d0 [ 12.898283] ret_from_fork_asm+0x1a/0x30 [ 12.898485] [ 12.898588] The buggy address belongs to the object at ffff8881026260c0 [ 12.898588] which belongs to the cache kmalloc-16 of size 16 [ 12.899200] The buggy address is located 0 bytes inside of [ 12.899200] 16-byte region [ffff8881026260c0, ffff8881026260d0) [ 12.899622] [ 12.899694] The buggy address belongs to the physical page: [ 12.900070] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102626 [ 12.900432] flags: 0x200000000000000(node=0|zone=2) [ 12.900660] page_type: f5(slab) [ 12.900824] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.901252] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.901734] page dumped because: kasan: bad access detected [ 12.902048] [ 12.902155] Memory state around the buggy address: [ 12.902350] ffff888102625f80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.902682] ffff888102626000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.903069] >ffff888102626080: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 12.903369] ^ [ 12.903611] ffff888102626100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.903920] ffff888102626180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.904250] ==================================================================