Date
July 9, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.936770] ================================================================== [ 16.936843] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 16.937237] Free of addr fff00000c61bc480 by task kunit_try_catch/192 [ 16.937300] [ 16.937336] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.937454] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.937482] Hardware name: linux,dummy-virt (DT) [ 16.937558] Call trace: [ 16.937918] show_stack+0x20/0x38 (C) [ 16.937990] dump_stack_lvl+0x8c/0xd0 [ 16.938309] print_report+0x118/0x608 [ 16.938379] kasan_report_invalid_free+0xc0/0xe8 [ 16.938438] check_slab_allocation+0xd4/0x108 [ 16.938484] __kasan_slab_pre_free+0x2c/0x48 [ 16.938802] kfree+0xe8/0x3c8 [ 16.938871] kfree_sensitive+0x3c/0xb0 [ 16.938917] kmalloc_double_kzfree+0x168/0x308 [ 16.939192] kunit_try_run_case+0x170/0x3f0 [ 16.939267] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.939320] kthread+0x328/0x630 [ 16.939644] ret_from_fork+0x10/0x20 [ 16.939754] [ 16.939780] Allocated by task 192: [ 16.939946] kasan_save_stack+0x3c/0x68 [ 16.940129] kasan_save_track+0x20/0x40 [ 16.940267] kasan_save_alloc_info+0x40/0x58 [ 16.940373] __kasan_kmalloc+0xd4/0xd8 [ 16.941962] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.942081] kmalloc_double_kzfree+0xb8/0x308 [ 16.942256] kunit_try_run_case+0x170/0x3f0 [ 16.942300] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.942344] kthread+0x328/0x630 [ 16.942586] ret_from_fork+0x10/0x20 [ 16.942785] [ 16.942902] Freed by task 192: [ 16.943072] kasan_save_stack+0x3c/0x68 [ 16.943303] kasan_save_track+0x20/0x40 [ 16.943551] kasan_save_free_info+0x4c/0x78 [ 16.943616] __kasan_slab_free+0x6c/0x98 [ 16.943676] kfree+0x214/0x3c8 [ 16.943923] kfree_sensitive+0x80/0xb0 [ 16.944080] kmalloc_double_kzfree+0x11c/0x308 [ 16.944135] kunit_try_run_case+0x170/0x3f0 [ 16.944173] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.944386] kthread+0x328/0x630 [ 16.944547] ret_from_fork+0x10/0x20 [ 16.944622] [ 16.944726] The buggy address belongs to the object at fff00000c61bc480 [ 16.944726] which belongs to the cache kmalloc-16 of size 16 [ 16.944850] The buggy address is located 0 bytes inside of [ 16.944850] 16-byte region [fff00000c61bc480, fff00000c61bc490) [ 16.945091] [ 16.945323] The buggy address belongs to the physical page: [ 16.945506] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1061bc [ 16.945734] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.945865] page_type: f5(slab) [ 16.945952] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.946022] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.946239] page dumped because: kasan: bad access detected [ 16.946494] [ 16.946520] Memory state around the buggy address: [ 16.946863] fff00000c61bc380: fa fb fc fc 00 04 fc fc fa fb fc fc fa fb fc fc [ 16.947031] fff00000c61bc400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.947246] >fff00000c61bc480: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.947394] ^ [ 16.947615] fff00000c61bc500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.947773] fff00000c61bc580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.947887] ==================================================================
[ 12.925695] ================================================================== [ 12.926042] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.926463] Free of addr ffff88810226cfc0 by task kunit_try_catch/209 [ 12.926773] [ 12.926878] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.926947] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.926959] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.926978] Call Trace: [ 12.926991] <TASK> [ 12.927016] dump_stack_lvl+0x73/0xb0 [ 12.927099] print_report+0xd1/0x650 [ 12.927122] ? __virt_addr_valid+0x1db/0x2d0 [ 12.927145] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.927199] ? kfree_sensitive+0x2e/0x90 [ 12.927219] kasan_report_invalid_free+0x10a/0x130 [ 12.927244] ? kfree_sensitive+0x2e/0x90 [ 12.927277] ? kfree_sensitive+0x2e/0x90 [ 12.927296] check_slab_allocation+0x101/0x130 [ 12.927344] __kasan_slab_pre_free+0x28/0x40 [ 12.927364] kfree+0xf0/0x3f0 [ 12.927385] ? kfree_sensitive+0x2e/0x90 [ 12.927417] kfree_sensitive+0x2e/0x90 [ 12.927436] kmalloc_double_kzfree+0x19c/0x350 [ 12.927484] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.927508] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 12.927532] ? trace_hardirqs_on+0x37/0xe0 [ 12.927566] ? __pfx_read_tsc+0x10/0x10 [ 12.927586] ? ktime_get_ts64+0x86/0x230 [ 12.927635] kunit_try_run_case+0x1a5/0x480 [ 12.927659] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.927694] ? queued_spin_lock_slowpath+0x116/0xb40 [ 12.927728] ? __kthread_parkme+0x82/0x180 [ 12.927748] ? preempt_count_sub+0x50/0x80 [ 12.927771] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.927812] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.927846] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.927870] kthread+0x337/0x6f0 [ 12.927889] ? trace_preempt_on+0x20/0xc0 [ 12.927922] ? __pfx_kthread+0x10/0x10 [ 12.927942] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.927988] ? calculate_sigpending+0x7b/0xa0 [ 12.928011] ? __pfx_kthread+0x10/0x10 [ 12.928105] ret_from_fork+0x116/0x1d0 [ 12.928125] ? __pfx_kthread+0x10/0x10 [ 12.928145] ret_from_fork_asm+0x1a/0x30 [ 12.928176] </TASK> [ 12.928186] [ 12.937459] Allocated by task 209: [ 12.937689] kasan_save_stack+0x45/0x70 [ 12.937944] kasan_save_track+0x18/0x40 [ 12.938336] kasan_save_alloc_info+0x3b/0x50 [ 12.938587] __kasan_kmalloc+0xb7/0xc0 [ 12.938732] __kmalloc_cache_noprof+0x189/0x420 [ 12.938994] kmalloc_double_kzfree+0xa9/0x350 [ 12.939309] kunit_try_run_case+0x1a5/0x480 [ 12.939533] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.939779] kthread+0x337/0x6f0 [ 12.939994] ret_from_fork+0x116/0x1d0 [ 12.940413] ret_from_fork_asm+0x1a/0x30 [ 12.940648] [ 12.940761] Freed by task 209: [ 12.940927] kasan_save_stack+0x45/0x70 [ 12.941250] kasan_save_track+0x18/0x40 [ 12.941442] kasan_save_free_info+0x3f/0x60 [ 12.941666] __kasan_slab_free+0x56/0x70 [ 12.941890] kfree+0x222/0x3f0 [ 12.942053] kfree_sensitive+0x67/0x90 [ 12.942338] kmalloc_double_kzfree+0x12b/0x350 [ 12.942533] kunit_try_run_case+0x1a5/0x480 [ 12.942761] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.943018] kthread+0x337/0x6f0 [ 12.943253] ret_from_fork+0x116/0x1d0 [ 12.943459] ret_from_fork_asm+0x1a/0x30 [ 12.943682] [ 12.943775] The buggy address belongs to the object at ffff88810226cfc0 [ 12.943775] which belongs to the cache kmalloc-16 of size 16 [ 12.944357] The buggy address is located 0 bytes inside of [ 12.944357] 16-byte region [ffff88810226cfc0, ffff88810226cfd0) [ 12.945024] [ 12.945151] The buggy address belongs to the physical page: [ 12.945409] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10226c [ 12.945971] flags: 0x200000000000000(node=0|zone=2) [ 12.946420] page_type: f5(slab) [ 12.946561] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.946844] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.947428] page dumped because: kasan: bad access detected [ 12.947776] [ 12.947854] Memory state around the buggy address: [ 12.948161] ffff88810226ce80: fa fb fc fc 00 04 fc fc 00 00 fc fc 00 04 fc fc [ 12.948419] ffff88810226cf00: 00 04 fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 12.948823] >ffff88810226cf80: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 12.949190] ^ [ 12.949488] ffff88810226d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.949785] ffff88810226d080: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 12.950116] ==================================================================