Date
July 2, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.343930] ================================================================== [ 18.344003] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 18.344051] Free of addr fff00000c3f3ec80 by task kunit_try_catch/192 [ 18.344094] [ 18.344168] CPU: 0 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.344256] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.344282] Hardware name: linux,dummy-virt (DT) [ 18.344333] Call trace: [ 18.344356] show_stack+0x20/0x38 (C) [ 18.344415] dump_stack_lvl+0x8c/0xd0 [ 18.344471] print_report+0x118/0x608 [ 18.344517] kasan_report_invalid_free+0xc0/0xe8 [ 18.344567] check_slab_allocation+0xd4/0x108 [ 18.345568] __kasan_slab_pre_free+0x2c/0x48 [ 18.345753] kfree+0xe8/0x3c8 [ 18.345872] kfree_sensitive+0x3c/0xb0 [ 18.345924] kmalloc_double_kzfree+0x168/0x308 [ 18.346012] kunit_try_run_case+0x170/0x3f0 [ 18.346350] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.346421] kthread+0x328/0x630 [ 18.346494] ret_from_fork+0x10/0x20 [ 18.346592] [ 18.346635] Allocated by task 192: [ 18.346693] kasan_save_stack+0x3c/0x68 [ 18.346767] kasan_save_track+0x20/0x40 [ 18.347065] kasan_save_alloc_info+0x40/0x58 [ 18.347142] __kasan_kmalloc+0xd4/0xd8 [ 18.347208] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.347274] kmalloc_double_kzfree+0xb8/0x308 [ 18.347314] kunit_try_run_case+0x170/0x3f0 [ 18.347607] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.347694] kthread+0x328/0x630 [ 18.347770] ret_from_fork+0x10/0x20 [ 18.347809] [ 18.348114] Freed by task 192: [ 18.348183] kasan_save_stack+0x3c/0x68 [ 18.348275] kasan_save_track+0x20/0x40 [ 18.348565] kasan_save_free_info+0x4c/0x78 [ 18.348869] __kasan_slab_free+0x6c/0x98 [ 18.348949] kfree+0x214/0x3c8 [ 18.349012] kfree_sensitive+0x80/0xb0 [ 18.349175] kmalloc_double_kzfree+0x11c/0x308 [ 18.349318] kunit_try_run_case+0x170/0x3f0 [ 18.349359] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.349403] kthread+0x328/0x630 [ 18.349437] ret_from_fork+0x10/0x20 [ 18.349792] [ 18.349888] The buggy address belongs to the object at fff00000c3f3ec80 [ 18.349888] which belongs to the cache kmalloc-16 of size 16 [ 18.350079] The buggy address is located 0 bytes inside of [ 18.350079] 16-byte region [fff00000c3f3ec80, fff00000c3f3ec90) [ 18.350243] [ 18.350386] The buggy address belongs to the physical page: [ 18.350436] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103f3e [ 18.350664] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.350847] page_type: f5(slab) [ 18.350910] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.351131] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.351304] page dumped because: kasan: bad access detected [ 18.351642] [ 18.351779] Memory state around the buggy address: [ 18.351918] fff00000c3f3eb80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.351994] fff00000c3f3ec00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.352169] >fff00000c3f3ec80: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.352268] ^ [ 18.352300] fff00000c3f3ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.352703] fff00000c3f3ed80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.352835] ==================================================================
[ 11.763668] ================================================================== [ 11.763961] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.764314] Free of addr ffff8881027960c0 by task kunit_try_catch/211 [ 11.764570] [ 11.764693] CPU: 1 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.764732] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.764743] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.764762] Call Trace: [ 11.764778] <TASK> [ 11.764796] dump_stack_lvl+0x73/0xb0 [ 11.764822] print_report+0xd1/0x650 [ 11.764844] ? __virt_addr_valid+0x1db/0x2d0 [ 11.764867] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.764887] ? kfree_sensitive+0x2e/0x90 [ 11.764907] kasan_report_invalid_free+0x10a/0x130 [ 11.764993] ? kfree_sensitive+0x2e/0x90 [ 11.765014] ? kfree_sensitive+0x2e/0x90 [ 11.765032] check_slab_allocation+0x101/0x130 [ 11.765053] __kasan_slab_pre_free+0x28/0x40 [ 11.765072] kfree+0xf0/0x3f0 [ 11.765094] ? kfree_sensitive+0x2e/0x90 [ 11.765115] kfree_sensitive+0x2e/0x90 [ 11.765133] kmalloc_double_kzfree+0x19c/0x350 [ 11.765155] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.765177] ? __schedule+0x10cc/0x2b60 [ 11.765199] ? __pfx_read_tsc+0x10/0x10 [ 11.765220] ? ktime_get_ts64+0x86/0x230 [ 11.765243] kunit_try_run_case+0x1a5/0x480 [ 11.765265] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.765286] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.765308] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.765329] ? __kthread_parkme+0x82/0x180 [ 11.765350] ? preempt_count_sub+0x50/0x80 [ 11.765383] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.765405] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.765427] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.765448] kthread+0x337/0x6f0 [ 11.765466] ? trace_preempt_on+0x20/0xc0 [ 11.765488] ? __pfx_kthread+0x10/0x10 [ 11.765507] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.765527] ? calculate_sigpending+0x7b/0xa0 [ 11.765549] ? __pfx_kthread+0x10/0x10 [ 11.765569] ret_from_fork+0x116/0x1d0 [ 11.765587] ? __pfx_kthread+0x10/0x10 [ 11.765606] ret_from_fork_asm+0x1a/0x30 [ 11.765635] </TASK> [ 11.765645] [ 11.773587] Allocated by task 211: [ 11.773912] kasan_save_stack+0x45/0x70 [ 11.774388] kasan_save_track+0x18/0x40 [ 11.774664] kasan_save_alloc_info+0x3b/0x50 [ 11.774880] __kasan_kmalloc+0xb7/0xc0 [ 11.775012] __kmalloc_cache_noprof+0x189/0x420 [ 11.775166] kmalloc_double_kzfree+0xa9/0x350 [ 11.775389] kunit_try_run_case+0x1a5/0x480 [ 11.775665] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.776038] kthread+0x337/0x6f0 [ 11.776218] ret_from_fork+0x116/0x1d0 [ 11.776352] ret_from_fork_asm+0x1a/0x30 [ 11.776500] [ 11.776570] Freed by task 211: [ 11.776679] kasan_save_stack+0x45/0x70 [ 11.776812] kasan_save_track+0x18/0x40 [ 11.776943] kasan_save_free_info+0x3f/0x60 [ 11.777149] __kasan_slab_free+0x56/0x70 [ 11.777344] kfree+0x222/0x3f0 [ 11.777522] kfree_sensitive+0x67/0x90 [ 11.777713] kmalloc_double_kzfree+0x12b/0x350 [ 11.778130] kunit_try_run_case+0x1a5/0x480 [ 11.778408] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.778850] kthread+0x337/0x6f0 [ 11.779007] ret_from_fork+0x116/0x1d0 [ 11.779174] ret_from_fork_asm+0x1a/0x30 [ 11.779325] [ 11.779407] The buggy address belongs to the object at ffff8881027960c0 [ 11.779407] which belongs to the cache kmalloc-16 of size 16 [ 11.780256] The buggy address is located 0 bytes inside of [ 11.780256] 16-byte region [ffff8881027960c0, ffff8881027960d0) [ 11.780599] [ 11.780672] The buggy address belongs to the physical page: [ 11.781033] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102796 [ 11.781750] flags: 0x200000000000000(node=0|zone=2) [ 11.782006] page_type: f5(slab) [ 11.782177] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.782521] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.782957] page dumped because: kasan: bad access detected [ 11.783164] [ 11.783233] Memory state around the buggy address: [ 11.783400] ffff888102795f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.783922] ffff888102796000: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.784249] >ffff888102796080: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 11.784537] ^ [ 11.785004] ffff888102796100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.785292] ffff888102796180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.785555] ==================================================================