Date
July 24, 2025, 4:41 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.722788] ================================================================== [ 32.722883] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 32.723115] Free of addr fff00000c8683500 by task kunit_try_catch/223 [ 32.723236] [ 32.723399] CPU: 0 UID: 0 PID: 223 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250724 #1 PREEMPT [ 32.723569] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.723659] Hardware name: linux,dummy-virt (DT) [ 32.723716] Call trace: [ 32.723828] show_stack+0x20/0x38 (C) [ 32.723882] dump_stack_lvl+0x8c/0xd0 [ 32.723929] print_report+0x118/0x5e8 [ 32.723981] kasan_report_invalid_free+0xc0/0xe8 [ 32.724513] check_slab_allocation+0xd4/0x108 [ 32.724610] __kasan_slab_pre_free+0x2c/0x48 [ 32.724783] kfree+0xe8/0x3c8 [ 32.724898] kfree_sensitive+0x3c/0xb0 [ 32.725112] kmalloc_double_kzfree+0x168/0x308 [ 32.725439] kunit_try_run_case+0x170/0x3f0 [ 32.725537] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.725679] kthread+0x328/0x630 [ 32.725797] ret_from_fork+0x10/0x20 [ 32.726239] [ 32.726284] Allocated by task 223: [ 32.726394] kasan_save_stack+0x3c/0x68 [ 32.726485] kasan_save_track+0x20/0x40 [ 32.726785] kasan_save_alloc_info+0x40/0x58 [ 32.727017] __kasan_kmalloc+0xd4/0xd8 [ 32.727196] __kmalloc_cache_noprof+0x16c/0x3c0 [ 32.727266] kmalloc_double_kzfree+0xb8/0x308 [ 32.727419] kunit_try_run_case+0x170/0x3f0 [ 32.727495] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.727687] kthread+0x328/0x630 [ 32.727736] ret_from_fork+0x10/0x20 [ 32.727787] [ 32.727807] Freed by task 223: [ 32.728192] kasan_save_stack+0x3c/0x68 [ 32.728319] kasan_save_track+0x20/0x40 [ 32.728397] kasan_save_free_info+0x4c/0x78 [ 32.728532] __kasan_slab_free+0x6c/0x98 [ 32.728567] kfree+0x214/0x3c8 [ 32.728603] kfree_sensitive+0x80/0xb0 [ 32.728648] kmalloc_double_kzfree+0x11c/0x308 [ 32.728688] kunit_try_run_case+0x170/0x3f0 [ 32.728726] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.728779] kthread+0x328/0x630 [ 32.728811] ret_from_fork+0x10/0x20 [ 32.728847] [ 32.728918] The buggy address belongs to the object at fff00000c8683500 [ 32.728918] which belongs to the cache kmalloc-16 of size 16 [ 32.729015] The buggy address is located 0 bytes inside of [ 32.729015] 16-byte region [fff00000c8683500, fff00000c8683510) [ 32.729077] [ 32.729098] The buggy address belongs to the physical page: [ 32.729143] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x108683 [ 32.729208] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.729259] page_type: f5(slab) [ 32.729298] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 32.729360] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 32.729402] page dumped because: kasan: bad access detected [ 32.729433] [ 32.729463] Memory state around the buggy address: [ 32.729496] fff00000c8683400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 32.729541] fff00000c8683480: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 32.729585] >fff00000c8683500: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.729634] ^ [ 32.729668] fff00000c8683580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.729711] fff00000c8683600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.729762] ==================================================================
[ 27.231132] ================================================================== [ 27.232001] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 27.232957] Free of addr ffff888105424ae0 by task kunit_try_catch/240 [ 27.233759] [ 27.233962] CPU: 0 UID: 0 PID: 240 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250724 #1 PREEMPT(voluntary) [ 27.234033] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 27.234046] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.234068] Call Trace: [ 27.234081] <TASK> [ 27.234099] dump_stack_lvl+0x73/0xb0 [ 27.234127] print_report+0xd1/0x640 [ 27.234151] ? __virt_addr_valid+0x1db/0x2d0 [ 27.234176] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.234203] ? kfree_sensitive+0x2e/0x90 [ 27.234225] kasan_report_invalid_free+0x10a/0x130 [ 27.234249] ? kfree_sensitive+0x2e/0x90 [ 27.234270] ? kfree_sensitive+0x2e/0x90 [ 27.234289] check_slab_allocation+0x101/0x130 [ 27.234312] __kasan_slab_pre_free+0x28/0x40 [ 27.234332] kfree+0xf0/0x3f0 [ 27.234355] ? kfree_sensitive+0x2e/0x90 [ 27.234376] kfree_sensitive+0x2e/0x90 [ 27.234395] kmalloc_double_kzfree+0x19c/0x350 [ 27.234418] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 27.234441] ? __schedule+0x10da/0x2b60 [ 27.234465] ? __pfx_read_tsc+0x10/0x10 [ 27.234486] ? ktime_get_ts64+0x86/0x230 [ 27.234510] kunit_try_run_case+0x1a5/0x480 [ 27.234533] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.234555] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.234591] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.234628] ? __kthread_parkme+0x82/0x180 [ 27.234664] ? preempt_count_sub+0x50/0x80 [ 27.234705] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.234728] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.234751] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.234773] kthread+0x337/0x6f0 [ 27.234802] ? trace_preempt_on+0x20/0xc0 [ 27.234825] ? __pfx_kthread+0x10/0x10 [ 27.234845] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.234867] ? calculate_sigpending+0x7b/0xa0 [ 27.234891] ? __pfx_kthread+0x10/0x10 [ 27.234911] ret_from_fork+0x116/0x1d0 [ 27.234930] ? __pfx_kthread+0x10/0x10 [ 27.234958] ret_from_fork_asm+0x1a/0x30 [ 27.234989] </TASK> [ 27.235000] [ 27.248426] Allocated by task 240: [ 27.248860] kasan_save_stack+0x45/0x70 [ 27.249365] kasan_save_track+0x18/0x40 [ 27.249757] kasan_save_alloc_info+0x3b/0x50 [ 27.250068] __kasan_kmalloc+0xb7/0xc0 [ 27.250313] __kmalloc_cache_noprof+0x189/0x420 [ 27.250708] kmalloc_double_kzfree+0xa9/0x350 [ 27.251171] kunit_try_run_case+0x1a5/0x480 [ 27.251551] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.251733] kthread+0x337/0x6f0 [ 27.252060] ret_from_fork+0x116/0x1d0 [ 27.252422] ret_from_fork_asm+0x1a/0x30 [ 27.252807] [ 27.253018] Freed by task 240: [ 27.253250] kasan_save_stack+0x45/0x70 [ 27.253561] kasan_save_track+0x18/0x40 [ 27.253703] kasan_save_free_info+0x3f/0x60 [ 27.253910] __kasan_slab_free+0x56/0x70 [ 27.254333] kfree+0x222/0x3f0 [ 27.254696] kfree_sensitive+0x67/0x90 [ 27.255119] kmalloc_double_kzfree+0x12b/0x350 [ 27.255666] kunit_try_run_case+0x1a5/0x480 [ 27.256007] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.256186] kthread+0x337/0x6f0 [ 27.256300] ret_from_fork+0x116/0x1d0 [ 27.256425] ret_from_fork_asm+0x1a/0x30 [ 27.256557] [ 27.256637] The buggy address belongs to the object at ffff888105424ae0 [ 27.256637] which belongs to the cache kmalloc-16 of size 16 [ 27.257052] The buggy address is located 0 bytes inside of [ 27.257052] 16-byte region [ffff888105424ae0, ffff888105424af0) [ 27.257643] [ 27.257718] The buggy address belongs to the physical page: [ 27.258052] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105424 [ 27.258433] flags: 0x200000000000000(node=0|zone=2) [ 27.258641] page_type: f5(slab) [ 27.258893] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 27.259229] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 27.259516] page dumped because: kasan: bad access detected [ 27.259739] [ 27.259803] Memory state around the buggy address: [ 27.260179] ffff888105424980: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 27.260497] ffff888105424a00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 27.260884] >ffff888105424a80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 27.261256] ^ [ 27.261447] ffff888105424b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.261794] ffff888105424b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.262120] ==================================================================