Date
June 3, 2025, 7:38 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.454883] ================================================================== [ 18.454957] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 18.455051] Free of addr fff00000c4473be0 by task kunit_try_catch/192 [ 18.455145] [ 18.455194] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250603 #1 PREEMPT [ 18.455303] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.455329] Hardware name: linux,dummy-virt (DT) [ 18.455445] Call trace: [ 18.455491] show_stack+0x20/0x38 (C) [ 18.455541] dump_stack_lvl+0x8c/0xd0 [ 18.455588] print_report+0x118/0x608 [ 18.455805] kasan_report_invalid_free+0xc0/0xe8 [ 18.455860] check_slab_allocation+0xd4/0x108 [ 18.455920] __kasan_slab_pre_free+0x2c/0x48 [ 18.455992] kfree+0xe8/0x3c8 [ 18.456128] kfree_sensitive+0x3c/0xb0 [ 18.456253] kmalloc_double_kzfree+0x168/0x308 [ 18.456386] kunit_try_run_case+0x170/0x3f0 [ 18.456505] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.456633] kthread+0x328/0x630 [ 18.456744] ret_from_fork+0x10/0x20 [ 18.456964] [ 18.456984] Allocated by task 192: [ 18.457011] kasan_save_stack+0x3c/0x68 [ 18.457219] kasan_save_track+0x20/0x40 [ 18.457270] kasan_save_alloc_info+0x40/0x58 [ 18.457317] __kasan_kmalloc+0xd4/0xd8 [ 18.457391] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.457481] kmalloc_double_kzfree+0xb8/0x308 [ 18.457625] kunit_try_run_case+0x170/0x3f0 [ 18.457716] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.457812] kthread+0x328/0x630 [ 18.457949] ret_from_fork+0x10/0x20 [ 18.458012] [ 18.458056] Freed by task 192: [ 18.458142] kasan_save_stack+0x3c/0x68 [ 18.458234] kasan_save_track+0x20/0x40 [ 18.458311] kasan_save_free_info+0x4c/0x78 [ 18.458366] __kasan_slab_free+0x6c/0x98 [ 18.458663] kfree+0x214/0x3c8 [ 18.458714] kfree_sensitive+0x80/0xb0 [ 18.458784] kmalloc_double_kzfree+0x11c/0x308 [ 18.458939] kunit_try_run_case+0x170/0x3f0 [ 18.459030] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.459191] kthread+0x328/0x630 [ 18.459271] ret_from_fork+0x10/0x20 [ 18.459452] [ 18.459523] The buggy address belongs to the object at fff00000c4473be0 [ 18.459523] which belongs to the cache kmalloc-16 of size 16 [ 18.459623] The buggy address is located 0 bytes inside of [ 18.459623] 16-byte region [fff00000c4473be0, fff00000c4473bf0) [ 18.459682] [ 18.459710] The buggy address belongs to the physical page: [ 18.459741] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104473 [ 18.459962] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.460152] page_type: f5(slab) [ 18.460296] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.460399] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.460537] page dumped because: kasan: bad access detected [ 18.460649] [ 18.460764] Memory state around the buggy address: [ 18.460837] fff00000c4473a80: fa fb fc fc 00 01 fc fc fa fb fc fc fa fb fc fc [ 18.460941] fff00000c4473b00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.461067] >fff00000c4473b80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.461130] ^ [ 18.461168] fff00000c4473c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.461219] fff00000c4473c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.461367] ==================================================================
[ 15.016355] ================================================================== [ 15.019691] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 15.020494] Free of addr ffff888102380980 by task kunit_try_catch/209 [ 15.020996] [ 15.021372] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250603 #1 PREEMPT(voluntary) [ 15.021826] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.021878] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.021917] Call Trace: [ 15.021955] <TASK> [ 15.021990] dump_stack_lvl+0x73/0xb0 [ 15.022052] print_report+0xd1/0x650 [ 15.022089] ? __virt_addr_valid+0x1db/0x2d0 [ 15.022127] ? kasan_complete_mode_report_info+0x64/0x200 [ 15.022162] ? kfree_sensitive+0x2e/0x90 [ 15.022224] kasan_report_invalid_free+0x10a/0x130 [ 15.022268] ? kfree_sensitive+0x2e/0x90 [ 15.022305] ? kfree_sensitive+0x2e/0x90 [ 15.022341] check_slab_allocation+0x101/0x130 [ 15.022380] __kasan_slab_pre_free+0x28/0x40 [ 15.022420] kfree+0xf0/0x3f0 [ 15.022449] ? kfree_sensitive+0x2e/0x90 [ 15.022502] kfree_sensitive+0x2e/0x90 [ 15.022539] kmalloc_double_kzfree+0x19c/0x350 [ 15.022585] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 15.022634] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 15.022717] kunit_try_run_case+0x1a5/0x480 [ 15.023036] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.023082] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.023132] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.023173] ? __kthread_parkme+0x82/0x180 [ 15.023237] ? preempt_count_sub+0x50/0x80 [ 15.023274] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.023305] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.023354] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.023393] kthread+0x337/0x6f0 [ 15.023425] ? trace_preempt_on+0x20/0xc0 [ 15.023474] ? __pfx_kthread+0x10/0x10 [ 15.023509] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.023545] ? calculate_sigpending+0x7b/0xa0 [ 15.023572] ? __pfx_kthread+0x10/0x10 [ 15.023596] ret_from_fork+0x116/0x1d0 [ 15.023619] ? __pfx_kthread+0x10/0x10 [ 15.023642] ret_from_fork_asm+0x1a/0x30 [ 15.023677] </TASK> [ 15.023711] [ 15.039651] Allocated by task 209: [ 15.039893] kasan_save_stack+0x45/0x70 [ 15.040580] kasan_save_track+0x18/0x40 [ 15.040858] kasan_save_alloc_info+0x3b/0x50 [ 15.041650] __kasan_kmalloc+0xb7/0xc0 [ 15.042199] __kmalloc_cache_noprof+0x189/0x420 [ 15.042674] kmalloc_double_kzfree+0xa9/0x350 [ 15.043004] kunit_try_run_case+0x1a5/0x480 [ 15.043592] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.043851] kthread+0x337/0x6f0 [ 15.044809] ret_from_fork+0x116/0x1d0 [ 15.045173] ret_from_fork_asm+0x1a/0x30 [ 15.045615] [ 15.045788] Freed by task 209: [ 15.046104] kasan_save_stack+0x45/0x70 [ 15.046436] kasan_save_track+0x18/0x40 [ 15.047134] kasan_save_free_info+0x3f/0x60 [ 15.047536] __kasan_slab_free+0x56/0x70 [ 15.047735] kfree+0x222/0x3f0 [ 15.047877] kfree_sensitive+0x67/0x90 [ 15.048038] kmalloc_double_kzfree+0x12b/0x350 [ 15.048211] kunit_try_run_case+0x1a5/0x480 [ 15.048379] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.049361] kthread+0x337/0x6f0 [ 15.049578] ret_from_fork+0x116/0x1d0 [ 15.050080] ret_from_fork_asm+0x1a/0x30 [ 15.050304] [ 15.050402] The buggy address belongs to the object at ffff888102380980 [ 15.050402] which belongs to the cache kmalloc-16 of size 16 [ 15.051898] The buggy address is located 0 bytes inside of [ 15.051898] 16-byte region [ffff888102380980, ffff888102380990) [ 15.052772] [ 15.052900] The buggy address belongs to the physical page: [ 15.053337] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102380 [ 15.053835] flags: 0x200000000000000(node=0|zone=2) [ 15.054234] page_type: f5(slab) [ 15.054427] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 15.054811] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.055627] page dumped because: kasan: bad access detected [ 15.055848] [ 15.055966] Memory state around the buggy address: [ 15.056431] ffff888102380880: 00 02 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 15.056887] ffff888102380900: fa fb fc fc fa fb fc fc fa fb fc fc 00 05 fc fc [ 15.057155] >ffff888102380980: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.057716] ^ [ 15.057997] ffff888102380a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.059126] ffff888102380a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.059969] ==================================================================