Date
July 9, 2025, 12:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.878566] ================================================================== [ 19.878965] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 19.879030] Free of addr fff00000c63901a0 by task kunit_try_catch/193 [ 19.879074] [ 19.879102] CPU: 1 UID: 0 PID: 193 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.879544] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.879656] Hardware name: linux,dummy-virt (DT) [ 19.879693] Call trace: [ 19.879778] show_stack+0x20/0x38 (C) [ 19.879862] dump_stack_lvl+0x8c/0xd0 [ 19.879917] print_report+0x118/0x608 [ 19.880053] kasan_report_invalid_free+0xc0/0xe8 [ 19.880144] check_slab_allocation+0xd4/0x108 [ 19.880348] __kasan_slab_pre_free+0x2c/0x48 [ 19.880623] kfree+0xe8/0x3c8 [ 19.880700] kfree_sensitive+0x3c/0xb0 [ 19.880854] kmalloc_double_kzfree+0x168/0x308 [ 19.880952] kunit_try_run_case+0x170/0x3f0 [ 19.881085] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.881177] kthread+0x328/0x630 [ 19.881247] ret_from_fork+0x10/0x20 [ 19.881461] [ 19.881572] Allocated by task 193: [ 19.881737] kasan_save_stack+0x3c/0x68 [ 19.882427] kasan_save_track+0x20/0x40 [ 19.882475] kasan_save_alloc_info+0x40/0x58 [ 19.882515] __kasan_kmalloc+0xd4/0xd8 [ 19.882553] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.882593] kmalloc_double_kzfree+0xb8/0x308 [ 19.882633] kunit_try_run_case+0x170/0x3f0 [ 19.882672] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.882716] kthread+0x328/0x630 [ 19.882750] ret_from_fork+0x10/0x20 [ 19.882785] [ 19.882805] Freed by task 193: [ 19.882832] kasan_save_stack+0x3c/0x68 [ 19.882870] kasan_save_track+0x20/0x40 [ 19.882909] kasan_save_free_info+0x4c/0x78 [ 19.882950] __kasan_slab_free+0x6c/0x98 [ 19.882988] kfree+0x214/0x3c8 [ 19.883024] kfree_sensitive+0x80/0xb0 [ 19.883060] kmalloc_double_kzfree+0x11c/0x308 [ 19.883099] kunit_try_run_case+0x170/0x3f0 [ 19.883138] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.883182] kthread+0x328/0x630 [ 19.883215] ret_from_fork+0x10/0x20 [ 19.883254] [ 19.883273] The buggy address belongs to the object at fff00000c63901a0 [ 19.883273] which belongs to the cache kmalloc-16 of size 16 [ 19.883334] The buggy address is located 0 bytes inside of [ 19.883334] 16-byte region [fff00000c63901a0, fff00000c63901b0) [ 19.883393] [ 19.883451] The buggy address belongs to the physical page: [ 19.883547] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106390 [ 19.883620] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.884038] page_type: f5(slab) [ 19.884112] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 19.884165] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.884206] page dumped because: kasan: bad access detected [ 19.884238] [ 19.884721] Memory state around the buggy address: [ 19.884762] fff00000c6390080: fa fb fc fc fa fb fc fc 00 04 fc fc fa fb fc fc [ 19.884807] fff00000c6390100: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.885352] >fff00000c6390180: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 19.885996] ^ [ 19.886199] fff00000c6390200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.886247] fff00000c6390280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.886975] ==================================================================
[ 13.017398] ================================================================== [ 13.017739] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 13.018423] Free of addr ffff888101e0ed00 by task kunit_try_catch/209 [ 13.018822] [ 13.018945] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.018989] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.019000] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.019076] Call Trace: [ 13.019092] <TASK> [ 13.019111] dump_stack_lvl+0x73/0xb0 [ 13.019144] print_report+0xd1/0x650 [ 13.019166] ? __virt_addr_valid+0x1db/0x2d0 [ 13.019189] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.019211] ? kfree_sensitive+0x2e/0x90 [ 13.019232] kasan_report_invalid_free+0x10a/0x130 [ 13.019382] ? kfree_sensitive+0x2e/0x90 [ 13.019407] ? kfree_sensitive+0x2e/0x90 [ 13.019426] check_slab_allocation+0x101/0x130 [ 13.019448] __kasan_slab_pre_free+0x28/0x40 [ 13.019469] kfree+0xf0/0x3f0 [ 13.019490] ? kfree_sensitive+0x2e/0x90 [ 13.019511] kfree_sensitive+0x2e/0x90 [ 13.019532] kmalloc_double_kzfree+0x19c/0x350 [ 13.019555] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 13.019578] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 13.019604] ? trace_hardirqs_on+0x37/0xe0 [ 13.019627] ? __pfx_read_tsc+0x10/0x10 [ 13.019648] ? ktime_get_ts64+0x86/0x230 [ 13.019672] kunit_try_run_case+0x1a5/0x480 [ 13.019696] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.019720] ? queued_spin_lock_slowpath+0x116/0xb40 [ 13.019745] ? __kthread_parkme+0x82/0x180 [ 13.019765] ? preempt_count_sub+0x50/0x80 [ 13.019789] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.019812] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.019836] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.019860] kthread+0x337/0x6f0 [ 13.019878] ? trace_preempt_on+0x20/0xc0 [ 13.019900] ? __pfx_kthread+0x10/0x10 [ 13.019920] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.020123] ? calculate_sigpending+0x7b/0xa0 [ 13.020152] ? __pfx_kthread+0x10/0x10 [ 13.020173] ret_from_fork+0x116/0x1d0 [ 13.020193] ? __pfx_kthread+0x10/0x10 [ 13.020213] ret_from_fork_asm+0x1a/0x30 [ 13.020243] </TASK> [ 13.020253] [ 13.031313] Allocated by task 209: [ 13.031641] kasan_save_stack+0x45/0x70 [ 13.031842] kasan_save_track+0x18/0x40 [ 13.032043] kasan_save_alloc_info+0x3b/0x50 [ 13.032529] __kasan_kmalloc+0xb7/0xc0 [ 13.032683] __kmalloc_cache_noprof+0x189/0x420 [ 13.033225] kmalloc_double_kzfree+0xa9/0x350 [ 13.033466] kunit_try_run_case+0x1a5/0x480 [ 13.033659] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.033890] kthread+0x337/0x6f0 [ 13.034066] ret_from_fork+0x116/0x1d0 [ 13.034231] ret_from_fork_asm+0x1a/0x30 [ 13.034919] [ 13.035015] Freed by task 209: [ 13.035459] kasan_save_stack+0x45/0x70 [ 13.035708] kasan_save_track+0x18/0x40 [ 13.035914] kasan_save_free_info+0x3f/0x60 [ 13.036344] __kasan_slab_free+0x56/0x70 [ 13.036623] kfree+0x222/0x3f0 [ 13.036827] kfree_sensitive+0x67/0x90 [ 13.037043] kmalloc_double_kzfree+0x12b/0x350 [ 13.037236] kunit_try_run_case+0x1a5/0x480 [ 13.037749] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.038157] kthread+0x337/0x6f0 [ 13.038291] ret_from_fork+0x116/0x1d0 [ 13.038648] ret_from_fork_asm+0x1a/0x30 [ 13.038833] [ 13.039065] The buggy address belongs to the object at ffff888101e0ed00 [ 13.039065] which belongs to the cache kmalloc-16 of size 16 [ 13.039792] The buggy address is located 0 bytes inside of [ 13.039792] 16-byte region [ffff888101e0ed00, ffff888101e0ed10) [ 13.040294] [ 13.040404] The buggy address belongs to the physical page: [ 13.040619] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e0e [ 13.041349] flags: 0x200000000000000(node=0|zone=2) [ 13.041576] page_type: f5(slab) [ 13.041700] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 13.042282] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 13.042869] page dumped because: kasan: bad access detected [ 13.043266] [ 13.043458] Memory state around the buggy address: [ 13.043629] ffff888101e0ec00: 00 04 fc fc 00 04 fc fc 00 05 fc fc fa fb fc fc [ 13.044084] ffff888101e0ec80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 13.044510] >ffff888101e0ed00: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.044806] ^ [ 13.045109] ffff888101e0ed80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.045555] ffff888101e0ee00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.045940] ==================================================================