Date
July 8, 2025, 7:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.469512] ================================================================== [ 19.469846] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 19.470049] Free of addr fff00000c564f380 by task kunit_try_catch/192 [ 19.470104] [ 19.470151] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.470308] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.470366] Hardware name: linux,dummy-virt (DT) [ 19.470404] Call trace: [ 19.470442] show_stack+0x20/0x38 (C) [ 19.470656] dump_stack_lvl+0x8c/0xd0 [ 19.470904] print_report+0x118/0x608 [ 19.471127] kasan_report_invalid_free+0xc0/0xe8 [ 19.471285] check_slab_allocation+0xd4/0x108 [ 19.471337] __kasan_slab_pre_free+0x2c/0x48 [ 19.471383] kfree+0xe8/0x3c8 [ 19.471482] kfree_sensitive+0x3c/0xb0 [ 19.471635] kmalloc_double_kzfree+0x168/0x308 [ 19.471697] kunit_try_run_case+0x170/0x3f0 [ 19.471757] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.471930] kthread+0x328/0x630 [ 19.472047] ret_from_fork+0x10/0x20 [ 19.472210] [ 19.472354] Allocated by task 192: [ 19.472412] kasan_save_stack+0x3c/0x68 [ 19.472630] kasan_save_track+0x20/0x40 [ 19.473036] kasan_save_alloc_info+0x40/0x58 [ 19.473267] __kasan_kmalloc+0xd4/0xd8 [ 19.473347] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.473471] kmalloc_double_kzfree+0xb8/0x308 [ 19.473561] kunit_try_run_case+0x170/0x3f0 [ 19.473728] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.473787] kthread+0x328/0x630 [ 19.474103] ret_from_fork+0x10/0x20 [ 19.474217] [ 19.474319] Freed by task 192: [ 19.474407] kasan_save_stack+0x3c/0x68 [ 19.474516] kasan_save_track+0x20/0x40 [ 19.474584] kasan_save_free_info+0x4c/0x78 [ 19.474792] __kasan_slab_free+0x6c/0x98 [ 19.475027] kfree+0x214/0x3c8 [ 19.475094] kfree_sensitive+0x80/0xb0 [ 19.475196] kmalloc_double_kzfree+0x11c/0x308 [ 19.475271] kunit_try_run_case+0x170/0x3f0 [ 19.475532] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.475694] kthread+0x328/0x630 [ 19.475799] ret_from_fork+0x10/0x20 [ 19.475895] [ 19.475952] The buggy address belongs to the object at fff00000c564f380 [ 19.475952] which belongs to the cache kmalloc-16 of size 16 [ 19.476078] The buggy address is located 0 bytes inside of [ 19.476078] 16-byte region [fff00000c564f380, fff00000c564f390) [ 19.476197] [ 19.476217] The buggy address belongs to the physical page: [ 19.476677] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10564f [ 19.476823] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.477013] page_type: f5(slab) [ 19.477163] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 19.477247] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.477326] page dumped because: kasan: bad access detected [ 19.477691] [ 19.477742] Memory state around the buggy address: [ 19.477838] fff00000c564f280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.477911] fff00000c564f300: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.477966] >fff00000c564f380: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.478072] ^ [ 19.478139] fff00000c564f400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.478239] fff00000c564f480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.478351] ==================================================================
[ 13.301309] ================================================================== [ 13.301797] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 13.302026] Free of addr ffff8881022baca0 by task kunit_try_catch/209 [ 13.302475] [ 13.302651] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.302694] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.302706] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.302726] Call Trace: [ 13.302744] <TASK> [ 13.302762] dump_stack_lvl+0x73/0xb0 [ 13.302790] print_report+0xd1/0x650 [ 13.302811] ? __virt_addr_valid+0x1db/0x2d0 [ 13.302834] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.302858] ? kfree_sensitive+0x2e/0x90 [ 13.302899] kasan_report_invalid_free+0x10a/0x130 [ 13.302923] ? kfree_sensitive+0x2e/0x90 [ 13.302944] ? kfree_sensitive+0x2e/0x90 [ 13.302962] check_slab_allocation+0x101/0x130 [ 13.303001] __kasan_slab_pre_free+0x28/0x40 [ 13.303020] kfree+0xf0/0x3f0 [ 13.303053] ? kfree_sensitive+0x2e/0x90 [ 13.303074] kfree_sensitive+0x2e/0x90 [ 13.303092] kmalloc_double_kzfree+0x19c/0x350 [ 13.303115] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 13.303137] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 13.303160] ? trace_hardirqs_on+0x37/0xe0 [ 13.303182] ? __pfx_read_tsc+0x10/0x10 [ 13.303202] ? ktime_get_ts64+0x86/0x230 [ 13.303225] kunit_try_run_case+0x1a5/0x480 [ 13.303248] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.303271] ? queued_spin_lock_slowpath+0x116/0xb40 [ 13.303294] ? __kthread_parkme+0x82/0x180 [ 13.303332] ? preempt_count_sub+0x50/0x80 [ 13.303354] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.303377] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.303398] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.303420] kthread+0x337/0x6f0 [ 13.303438] ? trace_preempt_on+0x20/0xc0 [ 13.303458] ? __pfx_kthread+0x10/0x10 [ 13.303478] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.303498] ? calculate_sigpending+0x7b/0xa0 [ 13.303521] ? __pfx_kthread+0x10/0x10 [ 13.303541] ret_from_fork+0x116/0x1d0 [ 13.303558] ? __pfx_kthread+0x10/0x10 [ 13.303578] ret_from_fork_asm+0x1a/0x30 [ 13.303608] </TASK> [ 13.303619] [ 13.311911] Allocated by task 209: [ 13.312061] kasan_save_stack+0x45/0x70 [ 13.312840] kasan_save_track+0x18/0x40 [ 13.313035] kasan_save_alloc_info+0x3b/0x50 [ 13.313220] __kasan_kmalloc+0xb7/0xc0 [ 13.313346] __kmalloc_cache_noprof+0x189/0x420 [ 13.313495] kmalloc_double_kzfree+0xa9/0x350 [ 13.313983] kunit_try_run_case+0x1a5/0x480 [ 13.314186] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.314353] kthread+0x337/0x6f0 [ 13.314469] ret_from_fork+0x116/0x1d0 [ 13.314597] ret_from_fork_asm+0x1a/0x30 [ 13.314763] [ 13.314855] Freed by task 209: [ 13.315006] kasan_save_stack+0x45/0x70 [ 13.315246] kasan_save_track+0x18/0x40 [ 13.315498] kasan_save_free_info+0x3f/0x60 [ 13.315835] __kasan_slab_free+0x56/0x70 [ 13.315993] kfree+0x222/0x3f0 [ 13.316185] kfree_sensitive+0x67/0x90 [ 13.316376] kmalloc_double_kzfree+0x12b/0x350 [ 13.316594] kunit_try_run_case+0x1a5/0x480 [ 13.316827] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.317108] kthread+0x337/0x6f0 [ 13.317286] ret_from_fork+0x116/0x1d0 [ 13.317435] ret_from_fork_asm+0x1a/0x30 [ 13.317685] [ 13.317772] The buggy address belongs to the object at ffff8881022baca0 [ 13.317772] which belongs to the cache kmalloc-16 of size 16 [ 13.318346] The buggy address is located 0 bytes inside of [ 13.318346] 16-byte region [ffff8881022baca0, ffff8881022bacb0) [ 13.318837] [ 13.319019] The buggy address belongs to the physical page: [ 13.319299] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1022ba [ 13.319615] flags: 0x200000000000000(node=0|zone=2) [ 13.319775] page_type: f5(slab) [ 13.319893] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 13.320276] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 13.320710] page dumped because: kasan: bad access detected [ 13.321070] [ 13.321190] Memory state around the buggy address: [ 13.321342] ffff8881022bab80: 00 04 fc fc 00 04 fc fc 00 01 fc fc 00 01 fc fc [ 13.321759] ffff8881022bac00: 00 04 fc fc 00 04 fc fc fa fb fc fc fa fb fc fc [ 13.322088] >ffff8881022bac80: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 13.322424] ^ [ 13.322803] ffff8881022bad00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.323103] ffff8881022bad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.323416] ==================================================================