Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 23.251936] ================================================================== [ 23.253477] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 23.255272] Free of addr fff00000c596b720 by task kunit_try_catch/181 [ 23.255918] [ 23.256254] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.14.11-rc1 #1 [ 23.256383] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.256417] Hardware name: linux,dummy-virt (DT) [ 23.256495] Call trace: [ 23.256556] show_stack+0x20/0x38 (C) [ 23.256699] dump_stack_lvl+0x8c/0xd0 [ 23.256830] print_report+0x118/0x608 [ 23.256938] kasan_report_invalid_free+0xc0/0xe8 [ 23.257052] check_slab_allocation+0xd4/0x108 [ 23.257182] __kasan_slab_pre_free+0x2c/0x48 [ 23.257307] kfree+0xe8/0x3c8 [ 23.257416] kfree_sensitive+0x3c/0xb0 [ 23.257538] kmalloc_double_kzfree+0x168/0x308 [ 23.257655] kunit_try_run_case+0x170/0x3f0 [ 23.257767] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.257921] kthread+0x318/0x620 [ 23.257989] ret_from_fork+0x10/0x20 [ 23.258049] [ 23.266496] Allocated by task 181: [ 23.266965] kasan_save_stack+0x3c/0x68 [ 23.267535] kasan_save_track+0x20/0x40 [ 23.268147] kasan_save_alloc_info+0x40/0x58 [ 23.268737] __kasan_kmalloc+0xd4/0xd8 [ 23.269400] __kmalloc_cache_noprof+0x16c/0x3c0 [ 23.270263] kmalloc_double_kzfree+0xb8/0x308 [ 23.270992] kunit_try_run_case+0x170/0x3f0 [ 23.271561] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.272309] kthread+0x318/0x620 [ 23.272850] ret_from_fork+0x10/0x20 [ 23.273992] [ 23.274342] Freed by task 181: [ 23.274830] kasan_save_stack+0x3c/0x68 [ 23.275398] kasan_save_track+0x20/0x40 [ 23.275996] kasan_save_free_info+0x4c/0x78 [ 23.276570] __kasan_slab_free+0x6c/0x98 [ 23.277433] kfree+0x214/0x3c8 [ 23.278385] kfree_sensitive+0x80/0xb0 [ 23.279025] kmalloc_double_kzfree+0x11c/0x308 [ 23.279669] kunit_try_run_case+0x170/0x3f0 [ 23.280196] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.280826] kthread+0x318/0x620 [ 23.281723] ret_from_fork+0x10/0x20 [ 23.282140] [ 23.282476] The buggy address belongs to the object at fff00000c596b720 [ 23.282476] which belongs to the cache kmalloc-16 of size 16 [ 23.283580] The buggy address is located 0 bytes inside of [ 23.283580] 16-byte region [fff00000c596b720, fff00000c596b730) [ 23.284626] [ 23.284962] The buggy address belongs to the physical page: [ 23.285541] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10596b [ 23.286444] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 23.287848] page_type: f5(slab) [ 23.288340] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 23.289093] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 23.289859] page dumped because: kasan: bad access detected [ 23.290849] [ 23.291098] Memory state around the buggy address: [ 23.291535] fff00000c596b600: fa fb fc fc 00 02 fc fc fa fb fc fc fa fb fc fc [ 23.292317] fff00000c596b680: fa fb fc fc fa fb fc fc fa fb fc fc 00 04 fc fc [ 23.293475] >fff00000c596b700: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 23.294369] ^ [ 23.295013] fff00000c596b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.295817] fff00000c596b800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.296626] ==================================================================
[ 18.109983] ================================================================== [ 18.110761] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 18.111300] Free of addr ffff8881025fedc0 by task kunit_try_catch/200 [ 18.112263] [ 18.112725] CPU: 1 UID: 0 PID: 200 Comm: kunit_try_catch Tainted: G B N 6.14.11-rc1 #1 [ 18.112796] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.112812] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.112837] Call Trace: [ 18.112880] <TASK> [ 18.112916] dump_stack_lvl+0x73/0xb0 [ 18.112988] print_report+0xd1/0x650 [ 18.113041] ? __virt_addr_valid+0x1db/0x2d0 [ 18.113121] ? kasan_complete_mode_report_info+0x64/0x200 [ 18.113256] ? kfree_sensitive+0x2e/0x90 [ 18.113291] kasan_report_invalid_free+0xfc/0x120 [ 18.113348] ? kfree_sensitive+0x2e/0x90 [ 18.113377] ? kfree_sensitive+0x2e/0x90 [ 18.113403] check_slab_allocation+0x101/0x130 [ 18.113437] __kasan_slab_pre_free+0x28/0x40 [ 18.113481] kfree+0xf1/0x3f0 [ 18.113525] ? kfree_sensitive+0x2e/0x90 [ 18.113571] kfree_sensitive+0x2e/0x90 [ 18.113613] kmalloc_double_kzfree+0x19d/0x360 [ 18.113661] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 18.113708] ? __schedule+0xce8/0x2840 [ 18.113756] ? __pfx_read_tsc+0x10/0x10 [ 18.113803] ? ktime_get_ts64+0x86/0x230 [ 18.113849] kunit_try_run_case+0x1a6/0x480 [ 18.113905] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.113932] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 18.113963] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.113992] ? __kthread_parkme+0x82/0x160 [ 18.114020] ? preempt_count_sub+0x50/0x80 [ 18.114051] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.114078] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.114110] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.114142] kthread+0x324/0x6e0 [ 18.114168] ? trace_preempt_on+0x20/0xc0 [ 18.114197] ? __pfx_kthread+0x10/0x10 [ 18.114224] ? _raw_spin_unlock_irq+0x47/0x80 [ 18.114253] ? calculate_sigpending+0x7b/0xa0 [ 18.114279] ? __pfx_kthread+0x10/0x10 [ 18.114314] ret_from_fork+0x41/0x80 [ 18.114346] ? __pfx_kthread+0x10/0x10 [ 18.114374] ret_from_fork_asm+0x1a/0x30 [ 18.114413] </TASK> [ 18.114432] [ 18.133523] Allocated by task 200: [ 18.134267] kasan_save_stack+0x45/0x70 [ 18.134741] kasan_save_track+0x18/0x40 [ 18.134987] kasan_save_alloc_info+0x3b/0x50 [ 18.135304] __kasan_kmalloc+0xb7/0xc0 [ 18.136071] __kmalloc_cache_noprof+0x18a/0x420 [ 18.136590] kmalloc_double_kzfree+0xaa/0x360 [ 18.136849] kunit_try_run_case+0x1a6/0x480 [ 18.137166] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.137773] kthread+0x324/0x6e0 [ 18.138610] ret_from_fork+0x41/0x80 [ 18.138819] ret_from_fork_asm+0x1a/0x30 [ 18.139579] [ 18.140001] Freed by task 200: [ 18.140513] kasan_save_stack+0x45/0x70 [ 18.140981] kasan_save_track+0x18/0x40 [ 18.141660] kasan_save_free_info+0x3f/0x60 [ 18.142029] __kasan_slab_free+0x56/0x70 [ 18.142623] kfree+0x224/0x3f0 [ 18.143128] kfree_sensitive+0x67/0x90 [ 18.143669] kmalloc_double_kzfree+0x12c/0x360 [ 18.144232] kunit_try_run_case+0x1a6/0x480 [ 18.144790] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.145436] kthread+0x324/0x6e0 [ 18.145793] ret_from_fork+0x41/0x80 [ 18.146323] ret_from_fork_asm+0x1a/0x30 [ 18.146925] [ 18.147673] The buggy address belongs to the object at ffff8881025fedc0 [ 18.147673] which belongs to the cache kmalloc-16 of size 16 [ 18.148443] The buggy address is located 0 bytes inside of [ 18.148443] 16-byte region [ffff8881025fedc0, ffff8881025fedd0) [ 18.149775] [ 18.150090] The buggy address belongs to the physical page: [ 18.150672] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025fe [ 18.151260] flags: 0x200000000000000(node=0|zone=2) [ 18.151995] page_type: f5(slab) [ 18.152562] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 18.153491] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.153913] page dumped because: kasan: bad access detected [ 18.154398] [ 18.154570] Memory state around the buggy address: [ 18.155466] ffff8881025fec80: 00 02 fc fc 00 05 fc fc 00 02 fc fc 00 02 fc fc [ 18.156382] ffff8881025fed00: 00 02 fc fc 00 02 fc fc fa fb fc fc fa fb fc fc [ 18.157362] >ffff8881025fed80: fa fb fc fc 00 05 fc fc fa fb fc fc fc fc fc fc [ 18.158097] ^ [ 18.158818] ffff8881025fee00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.159391] ffff8881025fee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.160203] ==================================================================