Date
May 13, 2025, 12:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.500740] ================================================================== [ 19.500868] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 19.501037] Free of addr fff00000c4035120 by task kunit_try_catch/192 [ 19.501090] [ 19.501134] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT [ 19.501232] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.501263] Hardware name: linux,dummy-virt (DT) [ 19.501300] Call trace: [ 19.501328] show_stack+0x20/0x38 (C) [ 19.501388] dump_stack_lvl+0x8c/0xd0 [ 19.501442] print_report+0x118/0x608 [ 19.501493] kasan_report_invalid_free+0xc0/0xe8 [ 19.501547] check_slab_allocation+0xd4/0x108 [ 19.501601] __kasan_slab_pre_free+0x2c/0x48 [ 19.501656] kfree+0xe8/0x3c8 [ 19.501702] kfree_sensitive+0x3c/0xb0 [ 19.501753] kmalloc_double_kzfree+0x168/0x308 [ 19.501814] kunit_try_run_case+0x170/0x3f0 [ 19.501877] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.501938] kthread+0x328/0x630 [ 19.502419] ret_from_fork+0x10/0x20 [ 19.502758] [ 19.502796] Allocated by task 192: [ 19.502838] kasan_save_stack+0x3c/0x68 [ 19.502890] kasan_save_track+0x20/0x40 [ 19.502935] kasan_save_alloc_info+0x40/0x58 [ 19.503046] __kasan_kmalloc+0xd4/0xd8 [ 19.503129] __kmalloc_cache_noprof+0x15c/0x3c0 [ 19.503177] kmalloc_double_kzfree+0xb8/0x308 [ 19.503220] kunit_try_run_case+0x170/0x3f0 [ 19.503286] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.503371] kthread+0x328/0x630 [ 19.503412] ret_from_fork+0x10/0x20 [ 19.503454] [ 19.503478] Freed by task 192: [ 19.503513] kasan_save_stack+0x3c/0x68 [ 19.503554] kasan_save_track+0x20/0x40 [ 19.503596] kasan_save_free_info+0x4c/0x78 [ 19.503639] __kasan_slab_free+0x6c/0x98 [ 19.503679] kfree+0x214/0x3c8 [ 19.503717] kfree_sensitive+0x80/0xb0 [ 19.503756] kmalloc_double_kzfree+0x11c/0x308 [ 19.503798] kunit_try_run_case+0x170/0x3f0 [ 19.503837] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.503882] kthread+0x328/0x630 [ 19.503919] ret_from_fork+0x10/0x20 [ 19.503958] [ 19.503991] The buggy address belongs to the object at fff00000c4035120 [ 19.503991] which belongs to the cache kmalloc-16 of size 16 [ 19.504075] The buggy address is located 0 bytes inside of [ 19.504075] 16-byte region [fff00000c4035120, fff00000c4035130) [ 19.504197] [ 19.504259] The buggy address belongs to the physical page: [ 19.504317] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104035 [ 19.504380] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.504433] page_type: f5(slab) [ 19.504480] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 19.504535] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.504580] page dumped because: kasan: bad access detected [ 19.504613] [ 19.504634] Memory state around the buggy address: [ 19.504671] fff00000c4035000: 00 02 fc fc 00 05 fc fc fa fb fc fc fa fb fc fc [ 19.504718] fff00000c4035080: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.504764] >fff00000c4035100: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 19.504804] ^ [ 19.504848] fff00000c4035180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.504941] fff00000c4035200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.505238] ==================================================================
[ 11.495308] ================================================================== [ 11.495676] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.495994] Free of addr ffff888101c869a0 by task kunit_try_catch/209 [ 11.496262] [ 11.496383] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT(voluntary) [ 11.496444] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.496458] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.496489] Call Trace: [ 11.496501] <TASK> [ 11.496516] dump_stack_lvl+0x73/0xb0 [ 11.496544] print_report+0xd1/0x650 [ 11.496567] ? __virt_addr_valid+0x1db/0x2d0 [ 11.496594] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.496633] ? kfree_sensitive+0x2e/0x90 [ 11.496705] kasan_report_invalid_free+0x10a/0x130 [ 11.496737] ? kfree_sensitive+0x2e/0x90 [ 11.496763] ? kfree_sensitive+0x2e/0x90 [ 11.496786] check_slab_allocation+0x101/0x130 [ 11.496812] __kasan_slab_pre_free+0x28/0x40 [ 11.496835] kfree+0xf0/0x3f0 [ 11.496854] ? kfree_sensitive+0x2e/0x90 [ 11.496880] kfree_sensitive+0x2e/0x90 [ 11.496902] kmalloc_double_kzfree+0x19c/0x350 [ 11.496928] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.496957] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 11.496985] ? __pfx_read_tsc+0x10/0x10 [ 11.497007] ? ktime_get_ts64+0x86/0x230 [ 11.497034] kunit_try_run_case+0x1a5/0x480 [ 11.497060] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.497084] ? _raw_spin_lock_irqsave+0xf9/0x100 [ 11.497109] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.497134] ? __kthread_parkme+0x82/0x180 [ 11.497157] ? preempt_count_sub+0x50/0x80 [ 11.497196] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.497224] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.497251] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.497279] kthread+0x337/0x6f0 [ 11.497299] ? trace_preempt_on+0x20/0xc0 [ 11.497324] ? __pfx_kthread+0x10/0x10 [ 11.497347] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.497369] ? calculate_sigpending+0x7b/0xa0 [ 11.497395] ? __pfx_kthread+0x10/0x10 [ 11.497419] ret_from_fork+0x116/0x1d0 [ 11.497438] ? __pfx_kthread+0x10/0x10 [ 11.497461] ret_from_fork_asm+0x1a/0x30 [ 11.497498] </TASK> [ 11.497508] [ 11.505684] Allocated by task 209: [ 11.505848] kasan_save_stack+0x45/0x70 [ 11.506109] kasan_save_track+0x18/0x40 [ 11.506303] kasan_save_alloc_info+0x3b/0x50 [ 11.506521] __kasan_kmalloc+0xb7/0xc0 [ 11.506774] __kmalloc_cache_noprof+0x189/0x420 [ 11.506952] kmalloc_double_kzfree+0xa9/0x350 [ 11.507158] kunit_try_run_case+0x1a5/0x480 [ 11.507364] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.507681] kthread+0x337/0x6f0 [ 11.507849] ret_from_fork+0x116/0x1d0 [ 11.508018] ret_from_fork_asm+0x1a/0x30 [ 11.508198] [ 11.508285] Freed by task 209: [ 11.508422] kasan_save_stack+0x45/0x70 [ 11.508752] kasan_save_track+0x18/0x40 [ 11.508944] kasan_save_free_info+0x3f/0x60 [ 11.509149] __kasan_slab_free+0x56/0x70 [ 11.509330] kfree+0x222/0x3f0 [ 11.509487] kfree_sensitive+0x67/0x90 [ 11.509722] kmalloc_double_kzfree+0x12b/0x350 [ 11.509938] kunit_try_run_case+0x1a5/0x480 [ 11.510111] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.510310] kthread+0x337/0x6f0 [ 11.510528] ret_from_fork+0x116/0x1d0 [ 11.510741] ret_from_fork_asm+0x1a/0x30 [ 11.510999] [ 11.511079] The buggy address belongs to the object at ffff888101c869a0 [ 11.511079] which belongs to the cache kmalloc-16 of size 16 [ 11.511632] The buggy address is located 0 bytes inside of [ 11.511632] 16-byte region [ffff888101c869a0, ffff888101c869b0) [ 11.511958] [ 11.512029] The buggy address belongs to the physical page: [ 11.512376] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101c86 [ 11.513156] flags: 0x200000000000000(node=0|zone=2) [ 11.513401] page_type: f5(slab) [ 11.513572] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.513887] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.514111] page dumped because: kasan: bad access detected [ 11.514279] [ 11.514348] Memory state around the buggy address: [ 11.514506] ffff888101c86880: 00 00 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.515049] ffff888101c86900: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.515369] >ffff888101c86980: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 11.515807] ^ [ 11.515975] ffff888101c86a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.516410] ffff888101c86a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.516641] ==================================================================