Date
July 20, 2025, 8:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.371979] ================================================================== [ 15.372051] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 15.372265] Free of addr fff00000c6086780 by task kunit_try_catch/193 [ 15.372356] [ 15.372392] CPU: 1 UID: 0 PID: 193 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.372585] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.372808] Hardware name: linux,dummy-virt (DT) [ 15.373003] Call trace: [ 15.373080] show_stack+0x20/0x38 (C) [ 15.373261] dump_stack_lvl+0x8c/0xd0 [ 15.373343] print_report+0x118/0x5d0 [ 15.373490] kasan_report_invalid_free+0xc0/0xe8 [ 15.373725] check_slab_allocation+0xd4/0x108 [ 15.373903] __kasan_slab_pre_free+0x2c/0x48 [ 15.374084] kfree+0xe8/0x3c8 [ 15.374173] kfree_sensitive+0x3c/0xb0 [ 15.374265] kmalloc_double_kzfree+0x168/0x308 [ 15.374402] kunit_try_run_case+0x170/0x3f0 [ 15.374499] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.374622] kthread+0x328/0x630 [ 15.374698] ret_from_fork+0x10/0x20 [ 15.374929] [ 15.374981] Allocated by task 193: [ 15.375222] kasan_save_stack+0x3c/0x68 [ 15.375347] kasan_save_track+0x20/0x40 [ 15.375388] kasan_save_alloc_info+0x40/0x58 [ 15.375470] __kasan_kmalloc+0xd4/0xd8 [ 15.375675] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.375874] kmalloc_double_kzfree+0xb8/0x308 [ 15.375959] kunit_try_run_case+0x170/0x3f0 [ 15.376139] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.376287] kthread+0x328/0x630 [ 15.376322] ret_from_fork+0x10/0x20 [ 15.376559] [ 15.376687] Freed by task 193: [ 15.376748] kasan_save_stack+0x3c/0x68 [ 15.376924] kasan_save_track+0x20/0x40 [ 15.377020] kasan_save_free_info+0x4c/0x78 [ 15.377253] __kasan_slab_free+0x6c/0x98 [ 15.377294] kfree+0x214/0x3c8 [ 15.377335] kfree_sensitive+0x80/0xb0 [ 15.377370] kmalloc_double_kzfree+0x11c/0x308 [ 15.377734] kunit_try_run_case+0x170/0x3f0 [ 15.377914] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.378050] kthread+0x328/0x630 [ 15.378169] ret_from_fork+0x10/0x20 [ 15.378302] [ 15.378326] The buggy address belongs to the object at fff00000c6086780 [ 15.378326] which belongs to the cache kmalloc-16 of size 16 [ 15.378420] The buggy address is located 0 bytes inside of [ 15.378420] 16-byte region [fff00000c6086780, fff00000c6086790) [ 15.379211] [ 15.379271] The buggy address belongs to the physical page: [ 15.379306] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106086 [ 15.379585] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.379670] page_type: f5(slab) [ 15.379738] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.380444] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.380693] page dumped because: kasan: bad access detected [ 15.380742] [ 15.380846] Memory state around the buggy address: [ 15.380894] fff00000c6086680: 00 00 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.380980] fff00000c6086700: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.381102] >fff00000c6086780: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.381213] ^ [ 15.381244] fff00000c6086800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.381308] fff00000c6086880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.381491] ==================================================================
[ 13.325013] ================================================================== [ 13.325406] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 13.325883] Free of addr ffff888102641a80 by task kunit_try_catch/210 [ 13.326599] [ 13.326795] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.326853] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.326864] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.326886] Call Trace: [ 13.326898] <TASK> [ 13.326913] dump_stack_lvl+0x73/0xb0 [ 13.326945] print_report+0xd1/0x610 [ 13.326969] ? __virt_addr_valid+0x1db/0x2d0 [ 13.326991] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.327013] ? kfree_sensitive+0x2e/0x90 [ 13.327046] kasan_report_invalid_free+0x10a/0x130 [ 13.327070] ? kfree_sensitive+0x2e/0x90 [ 13.327103] ? kfree_sensitive+0x2e/0x90 [ 13.327123] check_slab_allocation+0x101/0x130 [ 13.327145] __kasan_slab_pre_free+0x28/0x40 [ 13.327166] kfree+0xf0/0x3f0 [ 13.327189] ? kfree_sensitive+0x2e/0x90 [ 13.327212] kfree_sensitive+0x2e/0x90 [ 13.327232] kmalloc_double_kzfree+0x19c/0x350 [ 13.327255] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 13.327290] ? __schedule+0x10c6/0x2b60 [ 13.327313] ? __pfx_read_tsc+0x10/0x10 [ 13.327335] ? ktime_get_ts64+0x86/0x230 [ 13.327359] kunit_try_run_case+0x1a5/0x480 [ 13.327383] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.327405] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.327439] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.327463] ? __kthread_parkme+0x82/0x180 [ 13.327493] ? preempt_count_sub+0x50/0x80 [ 13.327516] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.327542] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.327567] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.327591] kthread+0x337/0x6f0 [ 13.327611] ? trace_preempt_on+0x20/0xc0 [ 13.327634] ? __pfx_kthread+0x10/0x10 [ 13.327654] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.327676] ? calculate_sigpending+0x7b/0xa0 [ 13.327701] ? __pfx_kthread+0x10/0x10 [ 13.327722] ret_from_fork+0x116/0x1d0 [ 13.327740] ? __pfx_kthread+0x10/0x10 [ 13.327761] ret_from_fork_asm+0x1a/0x30 [ 13.327792] </TASK> [ 13.327803] [ 13.342798] Allocated by task 210: [ 13.343049] kasan_save_stack+0x45/0x70 [ 13.343519] kasan_save_track+0x18/0x40 [ 13.343940] kasan_save_alloc_info+0x3b/0x50 [ 13.344315] __kasan_kmalloc+0xb7/0xc0 [ 13.344558] __kmalloc_cache_noprof+0x189/0x420 [ 13.345007] kmalloc_double_kzfree+0xa9/0x350 [ 13.345402] kunit_try_run_case+0x1a5/0x480 [ 13.345712] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.346130] kthread+0x337/0x6f0 [ 13.346395] ret_from_fork+0x116/0x1d0 [ 13.346549] ret_from_fork_asm+0x1a/0x30 [ 13.346969] [ 13.347167] Freed by task 210: [ 13.347525] kasan_save_stack+0x45/0x70 [ 13.347949] kasan_save_track+0x18/0x40 [ 13.348216] kasan_save_free_info+0x3f/0x60 [ 13.348709] __kasan_slab_free+0x56/0x70 [ 13.349002] kfree+0x222/0x3f0 [ 13.349126] kfree_sensitive+0x67/0x90 [ 13.349266] kmalloc_double_kzfree+0x12b/0x350 [ 13.349801] kunit_try_run_case+0x1a5/0x480 [ 13.350277] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.350823] kthread+0x337/0x6f0 [ 13.351236] ret_from_fork+0x116/0x1d0 [ 13.351733] ret_from_fork_asm+0x1a/0x30 [ 13.352190] [ 13.352353] The buggy address belongs to the object at ffff888102641a80 [ 13.352353] which belongs to the cache kmalloc-16 of size 16 [ 13.353333] The buggy address is located 0 bytes inside of [ 13.353333] 16-byte region [ffff888102641a80, ffff888102641a90) [ 13.354076] [ 13.354251] The buggy address belongs to the physical page: [ 13.354902] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102641 [ 13.355357] flags: 0x200000000000000(node=0|zone=2) [ 13.355570] page_type: f5(slab) [ 13.355908] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 13.356832] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 13.357379] page dumped because: kasan: bad access detected [ 13.357931] [ 13.358082] Memory state around the buggy address: [ 13.358489] ffff888102641980: fa fb fc fc 00 02 fc fc 00 05 fc fc 00 02 fc fc [ 13.359153] ffff888102641a00: 00 02 fc fc 00 02 fc fc 00 02 fc fc fa fb fc fc [ 13.359723] >ffff888102641a80: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.360163] ^ [ 13.360509] ffff888102641b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.361177] ffff888102641b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.361707] ==================================================================