Date
July 8, 2025, 4:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.024136] ================================================================== [ 18.024201] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 18.024264] Free of addr fff00000c5cff700 by task kunit_try_catch/194 [ 18.024306] [ 18.024347] CPU: 1 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT [ 18.024790] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.024890] Hardware name: linux,dummy-virt (DT) [ 18.024958] Call trace: [ 18.025009] show_stack+0x20/0x38 (C) [ 18.025059] dump_stack_lvl+0x8c/0xd0 [ 18.025108] print_report+0x118/0x608 [ 18.025152] kasan_report_invalid_free+0xc0/0xe8 [ 18.025201] check_slab_allocation+0xd4/0x108 [ 18.025377] __kasan_slab_pre_free+0x2c/0x48 [ 18.025452] kfree+0xe8/0x3c8 [ 18.025506] kfree_sensitive+0x3c/0xb0 [ 18.025553] kmalloc_double_kzfree+0x168/0x308 [ 18.025601] kunit_try_run_case+0x170/0x3f0 [ 18.025650] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.025703] kthread+0x328/0x630 [ 18.025815] ret_from_fork+0x10/0x20 [ 18.025912] [ 18.025970] Allocated by task 194: [ 18.025999] kasan_save_stack+0x3c/0x68 [ 18.026066] kasan_save_track+0x20/0x40 [ 18.026145] kasan_save_alloc_info+0x40/0x58 [ 18.026212] __kasan_kmalloc+0xd4/0xd8 [ 18.026247] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.026517] kmalloc_double_kzfree+0xb8/0x308 [ 18.026598] kunit_try_run_case+0x170/0x3f0 [ 18.026639] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.026710] kthread+0x328/0x630 [ 18.026787] ret_from_fork+0x10/0x20 [ 18.026875] [ 18.026925] Freed by task 194: [ 18.026971] kasan_save_stack+0x3c/0x68 [ 18.027008] kasan_save_track+0x20/0x40 [ 18.027045] kasan_save_free_info+0x4c/0x78 [ 18.027081] __kasan_slab_free+0x6c/0x98 [ 18.027118] kfree+0x214/0x3c8 [ 18.027149] kfree_sensitive+0x80/0xb0 [ 18.027265] kmalloc_double_kzfree+0x11c/0x308 [ 18.027358] kunit_try_run_case+0x170/0x3f0 [ 18.027469] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.027538] kthread+0x328/0x630 [ 18.027606] ret_from_fork+0x10/0x20 [ 18.027710] [ 18.027758] The buggy address belongs to the object at fff00000c5cff700 [ 18.027758] which belongs to the cache kmalloc-16 of size 16 [ 18.027823] The buggy address is located 0 bytes inside of [ 18.027823] 16-byte region [fff00000c5cff700, fff00000c5cff710) [ 18.028063] [ 18.028141] The buggy address belongs to the physical page: [ 18.028193] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105cff [ 18.028284] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.028391] page_type: f5(slab) [ 18.028488] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.028772] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.028817] page dumped because: kasan: bad access detected [ 18.028850] [ 18.029952] Memory state around the buggy address: [ 18.030012] fff00000c5cff600: 00 00 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.030068] fff00000c5cff680: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.030127] >fff00000c5cff700: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.030165] ^ [ 18.030191] fff00000c5cff780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.030242] fff00000c5cff800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.030282] ==================================================================
[ 11.672599] ================================================================== [ 11.672855] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.673500] Free of addr ffff88810242c940 by task kunit_try_catch/212 [ 11.674163] [ 11.674337] CPU: 0 UID: 0 PID: 212 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 11.674400] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.674412] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.674434] Call Trace: [ 11.674447] <TASK> [ 11.674463] dump_stack_lvl+0x73/0xb0 [ 11.674490] print_report+0xd1/0x650 [ 11.674563] ? __virt_addr_valid+0x1db/0x2d0 [ 11.674602] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.674625] ? kfree_sensitive+0x2e/0x90 [ 11.674647] kasan_report_invalid_free+0x10a/0x130 [ 11.674673] ? kfree_sensitive+0x2e/0x90 [ 11.674696] ? kfree_sensitive+0x2e/0x90 [ 11.674717] check_slab_allocation+0x101/0x130 [ 11.674739] __kasan_slab_pre_free+0x28/0x40 [ 11.674761] kfree+0xf0/0x3f0 [ 11.674779] ? kfree_sensitive+0x2e/0x90 [ 11.674802] kfree_sensitive+0x2e/0x90 [ 11.674823] kmalloc_double_kzfree+0x19c/0x350 [ 11.674896] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.674920] ? __schedule+0x10cc/0x2b60 [ 11.674944] ? __pfx_read_tsc+0x10/0x10 [ 11.674965] ? ktime_get_ts64+0x86/0x230 [ 11.674990] kunit_try_run_case+0x1a5/0x480 [ 11.675012] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.675032] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.675057] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.675081] ? __kthread_parkme+0x82/0x180 [ 11.675103] ? preempt_count_sub+0x50/0x80 [ 11.675128] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.675148] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.675172] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.675195] kthread+0x337/0x6f0 [ 11.675212] ? trace_preempt_on+0x20/0xc0 [ 11.675234] ? __pfx_kthread+0x10/0x10 [ 11.675253] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.675275] ? calculate_sigpending+0x7b/0xa0 [ 11.675296] ? __pfx_kthread+0x10/0x10 [ 11.675314] ret_from_fork+0x41/0x80 [ 11.675336] ? __pfx_kthread+0x10/0x10 [ 11.675354] ret_from_fork_asm+0x1a/0x30 [ 11.675384] </TASK> [ 11.675395] [ 11.686532] Allocated by task 212: [ 11.687124] kasan_save_stack+0x45/0x70 [ 11.687336] kasan_save_track+0x18/0x40 [ 11.687797] kasan_save_alloc_info+0x3b/0x50 [ 11.688160] __kasan_kmalloc+0xb7/0xc0 [ 11.688439] __kmalloc_cache_noprof+0x189/0x420 [ 11.688741] kmalloc_double_kzfree+0xa9/0x350 [ 11.689230] kunit_try_run_case+0x1a5/0x480 [ 11.689458] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.690022] kthread+0x337/0x6f0 [ 11.690167] ret_from_fork+0x41/0x80 [ 11.690383] ret_from_fork_asm+0x1a/0x30 [ 11.690718] [ 11.691064] Freed by task 212: [ 11.691227] kasan_save_stack+0x45/0x70 [ 11.691387] kasan_save_track+0x18/0x40 [ 11.691850] kasan_save_free_info+0x3f/0x60 [ 11.692082] __kasan_slab_free+0x56/0x70 [ 11.692305] kfree+0x222/0x3f0 [ 11.692476] kfree_sensitive+0x67/0x90 [ 11.692889] kmalloc_double_kzfree+0x12b/0x350 [ 11.693103] kunit_try_run_case+0x1a5/0x480 [ 11.693264] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.693761] kthread+0x337/0x6f0 [ 11.693917] ret_from_fork+0x41/0x80 [ 11.694269] ret_from_fork_asm+0x1a/0x30 [ 11.694483] [ 11.694558] The buggy address belongs to the object at ffff88810242c940 [ 11.694558] which belongs to the cache kmalloc-16 of size 16 [ 11.695210] The buggy address is located 0 bytes inside of [ 11.695210] 16-byte region [ffff88810242c940, ffff88810242c950) [ 11.696105] [ 11.696215] The buggy address belongs to the physical page: [ 11.696481] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10242c [ 11.697070] flags: 0x200000000000000(node=0|zone=2) [ 11.697490] page_type: f5(slab) [ 11.697956] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.698439] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.699054] page dumped because: kasan: bad access detected [ 11.699805] [ 11.700122] Memory state around the buggy address: [ 11.700770] ffff88810242c800: 00 04 fc fc 00 00 fc fc 00 04 fc fc 00 04 fc fc [ 11.701198] ffff88810242c880: 00 00 fc fc 00 04 fc fc fa fb fc fc fa fb fc fc [ 11.701412] >ffff88810242c900: 00 05 fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 11.701648] ^ [ 11.702170] ffff88810242c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.702672] ffff88810242ca00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.703126] ==================================================================