Date
May 23, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 27.978567] ================================================================== [ 27.978772] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 27.978916] Free of addr fff00000c5a2a700 by task kunit_try_catch/194 [ 27.979254] [ 27.979364] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT [ 27.979812] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.979960] Hardware name: linux,dummy-virt (DT) [ 27.980014] Call trace: [ 27.980063] show_stack+0x20/0x38 (C) [ 27.980253] dump_stack_lvl+0x8c/0xd0 [ 27.980409] print_report+0x118/0x608 [ 27.980540] kasan_report_invalid_free+0xc0/0xe8 [ 27.980657] check_slab_allocation+0xd4/0x108 [ 27.980786] __kasan_slab_pre_free+0x2c/0x48 [ 27.980927] kfree+0xe8/0x3c8 [ 27.981059] kfree_sensitive+0x3c/0xb0 [ 27.981190] kmalloc_double_kzfree+0x168/0x308 [ 27.981358] kunit_try_run_case+0x170/0x3f0 [ 27.981526] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.981673] kthread+0x328/0x630 [ 27.981831] ret_from_fork+0x10/0x20 [ 27.982153] [ 27.982262] Allocated by task 194: [ 27.982618] kasan_save_stack+0x3c/0x68 [ 27.982777] kasan_save_track+0x20/0x40 [ 27.982893] kasan_save_alloc_info+0x40/0x58 [ 27.983003] __kasan_kmalloc+0xd4/0xd8 [ 27.983111] __kmalloc_cache_noprof+0x15c/0x3c0 [ 27.983248] kmalloc_double_kzfree+0xb8/0x308 [ 27.983432] kunit_try_run_case+0x170/0x3f0 [ 27.983623] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.983812] kthread+0x328/0x630 [ 27.984019] ret_from_fork+0x10/0x20 [ 27.984480] [ 27.984547] Freed by task 194: [ 27.984662] kasan_save_stack+0x3c/0x68 [ 27.984835] kasan_save_track+0x20/0x40 [ 27.985099] kasan_save_free_info+0x4c/0x78 [ 27.985241] __kasan_slab_free+0x6c/0x98 [ 27.985776] kfree+0x214/0x3c8 [ 27.985917] kfree_sensitive+0x80/0xb0 [ 27.986032] kmalloc_double_kzfree+0x11c/0x308 [ 27.986275] kunit_try_run_case+0x170/0x3f0 [ 27.986818] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.987193] kthread+0x328/0x630 [ 27.987598] ret_from_fork+0x10/0x20 [ 27.987736] [ 27.987794] The buggy address belongs to the object at fff00000c5a2a700 [ 27.987794] which belongs to the cache kmalloc-16 of size 16 [ 27.988023] The buggy address is located 0 bytes inside of [ 27.988023] 16-byte region [fff00000c5a2a700, fff00000c5a2a710) [ 27.988422] [ 27.988506] The buggy address belongs to the physical page: [ 27.988771] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a2a [ 27.989101] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.989409] page_type: f5(slab) [ 27.989666] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 27.989892] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 27.990392] page dumped because: kasan: bad access detected [ 27.990640] [ 27.990703] Memory state around the buggy address: [ 27.990920] fff00000c5a2a600: 00 01 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 27.991137] fff00000c5a2a680: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 27.991274] >fff00000c5a2a700: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.991404] ^ [ 27.991501] fff00000c5a2a780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.991917] fff00000c5a2a800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.992150] ==================================================================
[ 12.974324] ================================================================== [ 12.974905] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.975717] Free of addr ffff8881020cbe80 by task kunit_try_catch/211 [ 12.976319] [ 12.976492] CPU: 0 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 12.976536] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.976558] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.976578] Call Trace: [ 12.976589] <TASK> [ 12.976604] dump_stack_lvl+0x73/0xb0 [ 12.976641] print_report+0xd1/0x650 [ 12.976663] ? __virt_addr_valid+0x1db/0x2d0 [ 12.976685] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.976706] ? kfree_sensitive+0x2e/0x90 [ 12.976727] kasan_report_invalid_free+0x10a/0x130 [ 12.976751] ? kfree_sensitive+0x2e/0x90 [ 12.976773] ? kfree_sensitive+0x2e/0x90 [ 12.976793] check_slab_allocation+0x101/0x130 [ 12.976814] __kasan_slab_pre_free+0x28/0x40 [ 12.976835] kfree+0xf0/0x3f0 [ 12.976853] ? kfree_sensitive+0x2e/0x90 [ 12.976875] kfree_sensitive+0x2e/0x90 [ 12.976895] kmalloc_double_kzfree+0x19c/0x350 [ 12.976917] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.976941] ? __schedule+0x10cc/0x2b30 [ 12.976963] ? __pfx_read_tsc+0x10/0x10 [ 12.976982] ? ktime_get_ts64+0x86/0x230 [ 12.977005] kunit_try_run_case+0x1a5/0x480 [ 12.977028] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.977049] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.977071] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.977093] ? __kthread_parkme+0x82/0x180 [ 12.977113] ? preempt_count_sub+0x50/0x80 [ 12.977138] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.977160] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.977181] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.977203] kthread+0x337/0x6f0 [ 12.977220] ? trace_preempt_on+0x20/0xc0 [ 12.977242] ? __pfx_kthread+0x10/0x10 [ 12.977260] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.977280] ? calculate_sigpending+0x7b/0xa0 [ 12.977310] ? __pfx_kthread+0x10/0x10 [ 12.977328] ret_from_fork+0x41/0x80 [ 12.977348] ? __pfx_kthread+0x10/0x10 [ 12.977365] ret_from_fork_asm+0x1a/0x30 [ 12.977396] </TASK> [ 12.977407] [ 12.991645] Allocated by task 211: [ 12.991916] kasan_save_stack+0x45/0x70 [ 12.992198] kasan_save_track+0x18/0x40 [ 12.992635] kasan_save_alloc_info+0x3b/0x50 [ 12.992810] __kasan_kmalloc+0xb7/0xc0 [ 12.993214] __kmalloc_cache_noprof+0x189/0x420 [ 12.993748] kmalloc_double_kzfree+0xa9/0x350 [ 12.994222] kunit_try_run_case+0x1a5/0x480 [ 12.994543] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.994978] kthread+0x337/0x6f0 [ 12.995125] ret_from_fork+0x41/0x80 [ 12.995401] ret_from_fork_asm+0x1a/0x30 [ 12.995689] [ 12.995761] Freed by task 211: [ 12.996115] kasan_save_stack+0x45/0x70 [ 12.996540] kasan_save_track+0x18/0x40 [ 12.996961] kasan_save_free_info+0x3f/0x60 [ 12.997210] __kasan_slab_free+0x56/0x70 [ 12.997489] kfree+0x222/0x3f0 [ 12.997789] kfree_sensitive+0x67/0x90 [ 12.998206] kmalloc_double_kzfree+0x12b/0x350 [ 12.998710] kunit_try_run_case+0x1a5/0x480 [ 12.999100] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.999316] kthread+0x337/0x6f0 [ 12.999648] ret_from_fork+0x41/0x80 [ 13.000097] ret_from_fork_asm+0x1a/0x30 [ 13.000448] [ 13.000643] The buggy address belongs to the object at ffff8881020cbe80 [ 13.000643] which belongs to the cache kmalloc-16 of size 16 [ 13.001376] The buggy address is located 0 bytes inside of [ 13.001376] 16-byte region [ffff8881020cbe80, ffff8881020cbe90) [ 13.001783] [ 13.001972] The buggy address belongs to the physical page: [ 13.002525] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1020cb [ 13.003361] flags: 0x200000000000000(node=0|zone=2) [ 13.003756] page_type: f5(slab) [ 13.004050] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 13.004640] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 13.005463] page dumped because: kasan: bad access detected [ 13.005699] [ 13.005830] Memory state around the buggy address: [ 13.006388] ffff8881020cbd80: fa fb fc fc fa fb fc fc fa fb fc fc 00 05 fc fc [ 13.007067] ffff8881020cbe00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 13.007320] >ffff8881020cbe80: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.008039] ^ [ 13.008359] ffff8881020cbf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.009075] ffff8881020cbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.009614] ==================================================================