Date
July 11, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.932574] ================================================================== [ 16.934181] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 16.934535] Free of addr fff00000c3f2f640 by task kunit_try_catch/193 [ 16.934923] [ 16.935148] CPU: 0 UID: 0 PID: 193 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.935280] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.935401] Hardware name: linux,dummy-virt (DT) [ 16.935575] Call trace: [ 16.935682] show_stack+0x20/0x38 (C) [ 16.936068] dump_stack_lvl+0x8c/0xd0 [ 16.936125] print_report+0x118/0x608 [ 16.936170] kasan_report_invalid_free+0xc0/0xe8 [ 16.936220] check_slab_allocation+0xd4/0x108 [ 16.937128] __kasan_slab_pre_free+0x2c/0x48 [ 16.937316] kfree+0xe8/0x3c8 [ 16.937713] kfree_sensitive+0x3c/0xb0 [ 16.937761] kmalloc_double_kzfree+0x168/0x308 [ 16.937809] kunit_try_run_case+0x170/0x3f0 [ 16.938936] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.939182] kthread+0x328/0x630 [ 16.939345] ret_from_fork+0x10/0x20 [ 16.939402] [ 16.939421] Allocated by task 193: [ 16.939448] kasan_save_stack+0x3c/0x68 [ 16.939498] kasan_save_track+0x20/0x40 [ 16.940291] kasan_save_alloc_info+0x40/0x58 [ 16.940788] __kasan_kmalloc+0xd4/0xd8 [ 16.941072] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.941115] kmalloc_double_kzfree+0xb8/0x308 [ 16.941154] kunit_try_run_case+0x170/0x3f0 [ 16.941192] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.941236] kthread+0x328/0x630 [ 16.941268] ret_from_fork+0x10/0x20 [ 16.942021] [ 16.942044] Freed by task 193: [ 16.942072] kasan_save_stack+0x3c/0x68 [ 16.942114] kasan_save_track+0x20/0x40 [ 16.942152] kasan_save_free_info+0x4c/0x78 [ 16.942193] __kasan_slab_free+0x6c/0x98 [ 16.942230] kfree+0x214/0x3c8 [ 16.942263] kfree_sensitive+0x80/0xb0 [ 16.942299] kmalloc_double_kzfree+0x11c/0x308 [ 16.942337] kunit_try_run_case+0x170/0x3f0 [ 16.942373] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.942416] kthread+0x328/0x630 [ 16.942448] ret_from_fork+0x10/0x20 [ 16.944092] [ 16.944122] The buggy address belongs to the object at fff00000c3f2f640 [ 16.944122] which belongs to the cache kmalloc-16 of size 16 [ 16.944551] The buggy address is located 0 bytes inside of [ 16.944551] 16-byte region [fff00000c3f2f640, fff00000c3f2f650) [ 16.945023] [ 16.945179] The buggy address belongs to the physical page: [ 16.945353] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103f2f [ 16.945414] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.945996] page_type: f5(slab) [ 16.946213] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.946908] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.947485] page dumped because: kasan: bad access detected [ 16.947532] [ 16.947551] Memory state around the buggy address: [ 16.947585] fff00000c3f2f500: fa fb fc fc fa fb fc fc fa fb fc fc 00 04 fc fc [ 16.947637] fff00000c3f2f580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.947999] >fff00000c3f2f600: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 16.948219] ^ [ 16.948260] fff00000c3f2f680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.948304] fff00000c3f2f700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.948346] ==================================================================
[ 12.711611] ================================================================== [ 12.712573] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.713043] Free of addr ffff888100a6e1a0 by task kunit_try_catch/209 [ 12.713512] [ 12.713753] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.713793] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.713813] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.713832] Call Trace: [ 12.713843] <TASK> [ 12.713857] dump_stack_lvl+0x73/0xb0 [ 12.713897] print_report+0xd1/0x650 [ 12.713935] ? __virt_addr_valid+0x1db/0x2d0 [ 12.713961] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.713997] ? kfree_sensitive+0x2e/0x90 [ 12.714018] kasan_report_invalid_free+0x10a/0x130 [ 12.714044] ? kfree_sensitive+0x2e/0x90 [ 12.714065] ? kfree_sensitive+0x2e/0x90 [ 12.714085] check_slab_allocation+0x101/0x130 [ 12.714107] __kasan_slab_pre_free+0x28/0x40 [ 12.714128] kfree+0xf0/0x3f0 [ 12.714157] ? kfree_sensitive+0x2e/0x90 [ 12.714179] kfree_sensitive+0x2e/0x90 [ 12.714199] kmalloc_double_kzfree+0x19c/0x350 [ 12.714243] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.714268] ? __schedule+0x10cc/0x2b60 [ 12.714289] ? __pfx_read_tsc+0x10/0x10 [ 12.714309] ? ktime_get_ts64+0x86/0x230 [ 12.714333] kunit_try_run_case+0x1a5/0x480 [ 12.714356] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.714379] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.714403] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.714426] ? __kthread_parkme+0x82/0x180 [ 12.714455] ? preempt_count_sub+0x50/0x80 [ 12.714478] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.714519] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.714543] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.714568] kthread+0x337/0x6f0 [ 12.714586] ? trace_preempt_on+0x20/0xc0 [ 12.714609] ? __pfx_kthread+0x10/0x10 [ 12.714629] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.714651] ? calculate_sigpending+0x7b/0xa0 [ 12.714674] ? __pfx_kthread+0x10/0x10 [ 12.714695] ret_from_fork+0x116/0x1d0 [ 12.714714] ? __pfx_kthread+0x10/0x10 [ 12.714734] ret_from_fork_asm+0x1a/0x30 [ 12.714776] </TASK> [ 12.714785] [ 12.728397] Allocated by task 209: [ 12.728773] kasan_save_stack+0x45/0x70 [ 12.729214] kasan_save_track+0x18/0x40 [ 12.729653] kasan_save_alloc_info+0x3b/0x50 [ 12.730134] __kasan_kmalloc+0xb7/0xc0 [ 12.730549] __kmalloc_cache_noprof+0x189/0x420 [ 12.731006] kmalloc_double_kzfree+0xa9/0x350 [ 12.731225] kunit_try_run_case+0x1a5/0x480 [ 12.731636] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.732116] kthread+0x337/0x6f0 [ 12.732500] ret_from_fork+0x116/0x1d0 [ 12.732659] ret_from_fork_asm+0x1a/0x30 [ 12.732799] [ 12.733008] Freed by task 209: [ 12.733331] kasan_save_stack+0x45/0x70 [ 12.733722] kasan_save_track+0x18/0x40 [ 12.734141] kasan_save_free_info+0x3f/0x60 [ 12.734619] __kasan_slab_free+0x56/0x70 [ 12.735052] kfree+0x222/0x3f0 [ 12.735384] kfree_sensitive+0x67/0x90 [ 12.735729] kmalloc_double_kzfree+0x12b/0x350 [ 12.736085] kunit_try_run_case+0x1a5/0x480 [ 12.736267] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.736755] kthread+0x337/0x6f0 [ 12.737091] ret_from_fork+0x116/0x1d0 [ 12.737516] ret_from_fork_asm+0x1a/0x30 [ 12.738004] [ 12.738189] The buggy address belongs to the object at ffff888100a6e1a0 [ 12.738189] which belongs to the cache kmalloc-16 of size 16 [ 12.738617] The buggy address is located 0 bytes inside of [ 12.738617] 16-byte region [ffff888100a6e1a0, ffff888100a6e1b0) [ 12.739595] [ 12.739789] The buggy address belongs to the physical page: [ 12.740387] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100a6e [ 12.741186] flags: 0x200000000000000(node=0|zone=2) [ 12.741711] page_type: f5(slab) [ 12.742082] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.742405] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.743154] page dumped because: kasan: bad access detected [ 12.743687] [ 12.743849] Memory state around the buggy address: [ 12.744392] ffff888100a6e080: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.744637] ffff888100a6e100: 00 05 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.745154] >ffff888100a6e180: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 12.745794] ^ [ 12.746208] ffff888100a6e200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.746993] ffff888100a6e280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.747470] ==================================================================