Date
May 29, 2025, 7:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.989842] ================================================================== [ 21.990436] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 21.990650] Free of addr fff00000c66b10c0 by task kunit_try_catch/192 [ 21.990802] [ 21.990918] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT [ 21.991138] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.991202] Hardware name: linux,dummy-virt (DT) [ 21.991278] Call trace: [ 21.991369] show_stack+0x20/0x38 (C) [ 21.991735] dump_stack_lvl+0x8c/0xd0 [ 21.991890] print_report+0x118/0x608 [ 21.992018] kasan_report_invalid_free+0xc0/0xe8 [ 21.992197] check_slab_allocation+0xd4/0x108 [ 21.992361] __kasan_slab_pre_free+0x2c/0x48 [ 21.992532] kfree+0xe8/0x3c8 [ 21.992643] kfree_sensitive+0x3c/0xb0 [ 21.992772] kmalloc_double_kzfree+0x168/0x308 [ 21.992881] kunit_try_run_case+0x170/0x3f0 [ 21.992989] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.993326] kthread+0x328/0x630 [ 21.993561] ret_from_fork+0x10/0x20 [ 21.993683] [ 21.993735] Allocated by task 192: [ 21.993944] kasan_save_stack+0x3c/0x68 [ 21.994230] kasan_save_track+0x20/0x40 [ 21.994359] kasan_save_alloc_info+0x40/0x58 [ 21.994464] __kasan_kmalloc+0xd4/0xd8 [ 21.994539] __kmalloc_cache_noprof+0x15c/0x3c0 [ 21.994616] kmalloc_double_kzfree+0xb8/0x308 [ 21.994690] kunit_try_run_case+0x170/0x3f0 [ 21.994776] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.994891] kthread+0x328/0x630 [ 21.994979] ret_from_fork+0x10/0x20 [ 21.995084] [ 21.995130] Freed by task 192: [ 21.995197] kasan_save_stack+0x3c/0x68 [ 21.995390] kasan_save_track+0x20/0x40 [ 21.995633] kasan_save_free_info+0x4c/0x78 [ 21.995859] __kasan_slab_free+0x6c/0x98 [ 21.995984] kfree+0x214/0x3c8 [ 21.996082] kfree_sensitive+0x80/0xb0 [ 21.996186] kmalloc_double_kzfree+0x11c/0x308 [ 21.996309] kunit_try_run_case+0x170/0x3f0 [ 21.996395] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.996509] kthread+0x328/0x630 [ 21.996837] ret_from_fork+0x10/0x20 [ 21.997050] [ 21.997106] The buggy address belongs to the object at fff00000c66b10c0 [ 21.997106] which belongs to the cache kmalloc-16 of size 16 [ 21.997259] The buggy address is located 0 bytes inside of [ 21.997259] 16-byte region [fff00000c66b10c0, fff00000c66b10d0) [ 21.997417] [ 21.997471] The buggy address belongs to the physical page: [ 21.997545] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1066b1 [ 21.997687] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.997808] page_type: f5(slab) [ 21.998171] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 21.998376] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 21.998501] page dumped because: kasan: bad access detected [ 21.998619] [ 21.998662] Memory state around the buggy address: [ 21.998780] fff00000c66b0f80: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc [ 21.998911] fff00000c66b1000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 21.999051] >fff00000c66b1080: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 21.999167] ^ [ 21.999341] fff00000c66b1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.999448] fff00000c66b1180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.999531] ==================================================================
[ 11.219319] ================================================================== [ 11.219659] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.220061] Free of addr ffff888101c55fc0 by task kunit_try_catch/209 [ 11.220317] [ 11.220430] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT(voluntary) [ 11.220474] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.220485] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.220505] Call Trace: [ 11.220517] <TASK> [ 11.220531] dump_stack_lvl+0x73/0xb0 [ 11.220557] print_report+0xd1/0x650 [ 11.220580] ? __virt_addr_valid+0x1db/0x2d0 [ 11.220603] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.220637] ? kfree_sensitive+0x2e/0x90 [ 11.220658] kasan_report_invalid_free+0x10a/0x130 [ 11.220682] ? kfree_sensitive+0x2e/0x90 [ 11.220704] ? kfree_sensitive+0x2e/0x90 [ 11.220724] check_slab_allocation+0x101/0x130 [ 11.220829] __kasan_slab_pre_free+0x28/0x40 [ 11.220853] kfree+0xf0/0x3f0 [ 11.220872] ? kfree_sensitive+0x2e/0x90 [ 11.220894] kfree_sensitive+0x2e/0x90 [ 11.220914] kmalloc_double_kzfree+0x19c/0x350 [ 11.220938] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.220965] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 11.220992] ? __pfx_read_tsc+0x10/0x10 [ 11.221013] ? ktime_get_ts64+0x86/0x230 [ 11.221036] kunit_try_run_case+0x1a5/0x480 [ 11.221057] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.221077] ? _raw_spin_lock_irqsave+0xf9/0x100 [ 11.221101] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.221125] ? __kthread_parkme+0x82/0x180 [ 11.221145] ? preempt_count_sub+0x50/0x80 [ 11.221168] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.221189] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.221213] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.221237] kthread+0x337/0x6f0 [ 11.221256] ? trace_preempt_on+0x20/0xc0 [ 11.221279] ? __pfx_kthread+0x10/0x10 [ 11.221299] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.221321] ? calculate_sigpending+0x7b/0xa0 [ 11.221344] ? __pfx_kthread+0x10/0x10 [ 11.221366] ret_from_fork+0x116/0x1d0 [ 11.221383] ? __pfx_kthread+0x10/0x10 [ 11.221404] ret_from_fork_asm+0x1a/0x30 [ 11.221434] </TASK> [ 11.221444] [ 11.229673] Allocated by task 209: [ 11.229950] kasan_save_stack+0x45/0x70 [ 11.230130] kasan_save_track+0x18/0x40 [ 11.230329] kasan_save_alloc_info+0x3b/0x50 [ 11.230507] __kasan_kmalloc+0xb7/0xc0 [ 11.230719] __kmalloc_cache_noprof+0x189/0x420 [ 11.231098] kmalloc_double_kzfree+0xa9/0x350 [ 11.231274] kunit_try_run_case+0x1a5/0x480 [ 11.231474] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.231844] kthread+0x337/0x6f0 [ 11.232019] ret_from_fork+0x116/0x1d0 [ 11.232190] ret_from_fork_asm+0x1a/0x30 [ 11.232380] [ 11.232454] Freed by task 209: [ 11.232570] kasan_save_stack+0x45/0x70 [ 11.232724] kasan_save_track+0x18/0x40 [ 11.232942] kasan_save_free_info+0x3f/0x60 [ 11.233152] __kasan_slab_free+0x56/0x70 [ 11.233359] kfree+0x222/0x3f0 [ 11.233529] kfree_sensitive+0x67/0x90 [ 11.233730] kmalloc_double_kzfree+0x12b/0x350 [ 11.234058] kunit_try_run_case+0x1a5/0x480 [ 11.234209] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.234390] kthread+0x337/0x6f0 [ 11.234567] ret_from_fork+0x116/0x1d0 [ 11.234929] ret_from_fork_asm+0x1a/0x30 [ 11.235146] [ 11.235245] The buggy address belongs to the object at ffff888101c55fc0 [ 11.235245] which belongs to the cache kmalloc-16 of size 16 [ 11.235872] The buggy address is located 0 bytes inside of [ 11.235872] 16-byte region [ffff888101c55fc0, ffff888101c55fd0) [ 11.236324] [ 11.236409] The buggy address belongs to the physical page: [ 11.236654] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101c55 [ 11.237060] flags: 0x200000000000000(node=0|zone=2) [ 11.237272] page_type: f5(slab) [ 11.237445] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.237871] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.238194] page dumped because: kasan: bad access detected [ 11.238371] [ 11.238443] Memory state around the buggy address: [ 11.238606] ffff888101c55e80: 00 00 fc fc 00 02 fc fc 00 02 fc fc 00 06 fc fc [ 11.239114] ffff888101c55f00: 00 06 fc fc 00 05 fc fc fa fb fc fc fa fb fc fc [ 11.239448] >ffff888101c55f80: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 11.239877] ^ [ 11.240127] ffff888101c56000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 11.240432] ffff888101c56080: 00 fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 [ 11.240720] ==================================================================