Date
July 19, 2025, 11:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.507429] ================================================================== [ 15.507766] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 15.507826] Free of addr fff00000c5f9c4c0 by task kunit_try_catch/193 [ 15.507869] [ 15.507898] CPU: 1 UID: 0 PID: 193 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.507987] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.508023] Hardware name: linux,dummy-virt (DT) [ 15.508054] Call trace: [ 15.508075] show_stack+0x20/0x38 (C) [ 15.508488] dump_stack_lvl+0x8c/0xd0 [ 15.508663] print_report+0x118/0x5d0 [ 15.508940] kasan_report_invalid_free+0xc0/0xe8 [ 15.509246] check_slab_allocation+0xd4/0x108 [ 15.509299] __kasan_slab_pre_free+0x2c/0x48 [ 15.509345] kfree+0xe8/0x3c8 [ 15.509388] kfree_sensitive+0x3c/0xb0 [ 15.509445] kmalloc_double_kzfree+0x168/0x308 [ 15.509494] kunit_try_run_case+0x170/0x3f0 [ 15.509678] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.509829] kthread+0x328/0x630 [ 15.509885] ret_from_fork+0x10/0x20 [ 15.509934] [ 15.509952] Allocated by task 193: [ 15.509986] kasan_save_stack+0x3c/0x68 [ 15.510063] kasan_save_track+0x20/0x40 [ 15.510263] kasan_save_alloc_info+0x40/0x58 [ 15.510309] __kasan_kmalloc+0xd4/0xd8 [ 15.510345] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.510475] kmalloc_double_kzfree+0xb8/0x308 [ 15.510574] kunit_try_run_case+0x170/0x3f0 [ 15.510679] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.512225] kthread+0x328/0x630 [ 15.512280] ret_from_fork+0x10/0x20 [ 15.512325] [ 15.512351] Freed by task 193: [ 15.512408] kasan_save_stack+0x3c/0x68 [ 15.512589] kasan_save_track+0x20/0x40 [ 15.512630] kasan_save_free_info+0x4c/0x78 [ 15.512671] __kasan_slab_free+0x6c/0x98 [ 15.512710] kfree+0x214/0x3c8 [ 15.512743] kfree_sensitive+0x80/0xb0 [ 15.513140] kmalloc_double_kzfree+0x11c/0x308 [ 15.513291] kunit_try_run_case+0x170/0x3f0 [ 15.513332] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.513376] kthread+0x328/0x630 [ 15.513700] ret_from_fork+0x10/0x20 [ 15.513766] [ 15.513788] The buggy address belongs to the object at fff00000c5f9c4c0 [ 15.513788] which belongs to the cache kmalloc-16 of size 16 [ 15.513939] The buggy address is located 0 bytes inside of [ 15.513939] 16-byte region [fff00000c5f9c4c0, fff00000c5f9c4d0) [ 15.514006] [ 15.514026] The buggy address belongs to the physical page: [ 15.514082] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105f9c [ 15.514133] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.514179] page_type: f5(slab) [ 15.514373] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.514494] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.514553] page dumped because: kasan: bad access detected [ 15.514585] [ 15.514603] Memory state around the buggy address: [ 15.515114] fff00000c5f9c380: fa fb fc fc fa fb fc fc fa fb fc fc 00 04 fc fc [ 15.515159] fff00000c5f9c400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.515596] >fff00000c5f9c480: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 15.515638] ^ [ 15.515675] fff00000c5f9c500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.515717] fff00000c5f9c580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.515762] ==================================================================
[ 12.436675] ================================================================== [ 12.437025] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.437224] Free of addr ffff888101994600 by task kunit_try_catch/210 [ 12.437419] [ 12.437631] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.437680] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.437690] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.437711] Call Trace: [ 12.437723] <TASK> [ 12.437738] dump_stack_lvl+0x73/0xb0 [ 12.437765] print_report+0xd1/0x610 [ 12.437786] ? __virt_addr_valid+0x1db/0x2d0 [ 12.437809] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.437830] ? kfree_sensitive+0x2e/0x90 [ 12.437850] kasan_report_invalid_free+0x10a/0x130 [ 12.437874] ? kfree_sensitive+0x2e/0x90 [ 12.437895] ? kfree_sensitive+0x2e/0x90 [ 12.437913] check_slab_allocation+0x101/0x130 [ 12.437934] __kasan_slab_pre_free+0x28/0x40 [ 12.437955] kfree+0xf0/0x3f0 [ 12.437975] ? kfree_sensitive+0x2e/0x90 [ 12.437996] kfree_sensitive+0x2e/0x90 [ 12.438015] kmalloc_double_kzfree+0x19c/0x350 [ 12.438038] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.438096] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 12.438120] ? trace_hardirqs_on+0x37/0xe0 [ 12.438143] ? __pfx_read_tsc+0x10/0x10 [ 12.438176] ? ktime_get_ts64+0x86/0x230 [ 12.438206] kunit_try_run_case+0x1a5/0x480 [ 12.438230] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.438253] ? queued_spin_lock_slowpath+0x116/0xb40 [ 12.438276] ? __kthread_parkme+0x82/0x180 [ 12.438296] ? preempt_count_sub+0x50/0x80 [ 12.438319] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.438342] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.438365] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.438388] kthread+0x337/0x6f0 [ 12.438406] ? trace_preempt_on+0x20/0xc0 [ 12.438426] ? __pfx_kthread+0x10/0x10 [ 12.438445] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.438466] ? calculate_sigpending+0x7b/0xa0 [ 12.438489] ? __pfx_kthread+0x10/0x10 [ 12.438520] ret_from_fork+0x116/0x1d0 [ 12.438538] ? __pfx_kthread+0x10/0x10 [ 12.438558] ret_from_fork_asm+0x1a/0x30 [ 12.438587] </TASK> [ 12.438597] [ 12.446812] Allocated by task 210: [ 12.446991] kasan_save_stack+0x45/0x70 [ 12.447274] kasan_save_track+0x18/0x40 [ 12.447448] kasan_save_alloc_info+0x3b/0x50 [ 12.447633] __kasan_kmalloc+0xb7/0xc0 [ 12.447819] __kmalloc_cache_noprof+0x189/0x420 [ 12.448004] kmalloc_double_kzfree+0xa9/0x350 [ 12.448380] kunit_try_run_case+0x1a5/0x480 [ 12.448606] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.448788] kthread+0x337/0x6f0 [ 12.448909] ret_from_fork+0x116/0x1d0 [ 12.449040] ret_from_fork_asm+0x1a/0x30 [ 12.449320] [ 12.449417] Freed by task 210: [ 12.449579] kasan_save_stack+0x45/0x70 [ 12.449766] kasan_save_track+0x18/0x40 [ 12.449953] kasan_save_free_info+0x3f/0x60 [ 12.450125] __kasan_slab_free+0x56/0x70 [ 12.450383] kfree+0x222/0x3f0 [ 12.450547] kfree_sensitive+0x67/0x90 [ 12.450681] kmalloc_double_kzfree+0x12b/0x350 [ 12.450898] kunit_try_run_case+0x1a5/0x480 [ 12.451106] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.451347] kthread+0x337/0x6f0 [ 12.451519] ret_from_fork+0x116/0x1d0 [ 12.451672] ret_from_fork_asm+0x1a/0x30 [ 12.451863] [ 12.451954] The buggy address belongs to the object at ffff888101994600 [ 12.451954] which belongs to the cache kmalloc-16 of size 16 [ 12.452407] The buggy address is located 0 bytes inside of [ 12.452407] 16-byte region [ffff888101994600, ffff888101994610) [ 12.452861] [ 12.452949] The buggy address belongs to the physical page: [ 12.453141] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101994 [ 12.453491] flags: 0x200000000000000(node=0|zone=2) [ 12.453733] page_type: f5(slab) [ 12.453866] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.454096] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.454330] page dumped because: kasan: bad access detected [ 12.454508] [ 12.454575] Memory state around the buggy address: [ 12.454731] ffff888101994500: 00 02 fc fc 00 02 fc fc 00 02 fc fc fa fb fc fc [ 12.454947] ffff888101994580: fa fb fc fc 00 05 fc fc fa fb fc fc fa fb fc fc [ 12.455177] >ffff888101994600: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.455739] ^ [ 12.455901] ffff888101994680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.456211] ffff888101994700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.456526] ==================================================================