Date
July 1, 2025, 12:10 a.m.
Environment | |
---|---|
qemu-arm64 | |
qemu-x86_64 |
[ 17.615672] ================================================================== [ 17.615755] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 17.615959] Free of addr fff00000c45518c0 by task kunit_try_catch/192 [ 17.616041] [ 17.616164] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 17.616251] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.616285] Hardware name: linux,dummy-virt (DT) [ 17.616314] Call trace: [ 17.616485] show_stack+0x20/0x38 (C) [ 17.616698] dump_stack_lvl+0x8c/0xd0 [ 17.616758] print_report+0x118/0x608 [ 17.616816] kasan_report_invalid_free+0xc0/0xe8 [ 17.616919] check_slab_allocation+0xd4/0x108 [ 17.616971] __kasan_slab_pre_free+0x2c/0x48 [ 17.617019] kfree+0xe8/0x3c8 [ 17.617060] kfree_sensitive+0x3c/0xb0 [ 17.617103] kmalloc_double_kzfree+0x168/0x308 [ 17.617154] kunit_try_run_case+0x170/0x3f0 [ 17.617199] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.617252] kthread+0x328/0x630 [ 17.617308] ret_from_fork+0x10/0x20 [ 17.617357] [ 17.617378] Allocated by task 192: [ 17.617405] kasan_save_stack+0x3c/0x68 [ 17.617456] kasan_save_track+0x20/0x40 [ 17.617494] kasan_save_alloc_info+0x40/0x58 [ 17.617544] __kasan_kmalloc+0xd4/0xd8 [ 17.617582] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.617620] kmalloc_double_kzfree+0xb8/0x308 [ 17.617663] kunit_try_run_case+0x170/0x3f0 [ 17.617702] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.617751] kthread+0x328/0x630 [ 17.617794] ret_from_fork+0x10/0x20 [ 17.617829] [ 17.617848] Freed by task 192: [ 17.617873] kasan_save_stack+0x3c/0x68 [ 17.617910] kasan_save_track+0x20/0x40 [ 17.617946] kasan_save_free_info+0x4c/0x78 [ 17.617990] __kasan_slab_free+0x6c/0x98 [ 17.618037] kfree+0x214/0x3c8 [ 17.618070] kfree_sensitive+0x80/0xb0 [ 17.618107] kmalloc_double_kzfree+0x11c/0x308 [ 17.618147] kunit_try_run_case+0x170/0x3f0 [ 17.618184] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.618230] kthread+0x328/0x630 [ 17.618261] ret_from_fork+0x10/0x20 [ 17.618296] [ 17.618314] The buggy address belongs to the object at fff00000c45518c0 [ 17.618314] which belongs to the cache kmalloc-16 of size 16 [ 17.618373] The buggy address is located 0 bytes inside of [ 17.618373] 16-byte region [fff00000c45518c0, fff00000c45518d0) [ 17.618436] [ 17.618692] The buggy address belongs to the physical page: [ 17.618735] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104551 [ 17.618789] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.618850] page_type: f5(slab) [ 17.618948] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 17.619025] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 17.619330] page dumped because: kasan: bad access detected [ 17.619362] [ 17.619381] Memory state around the buggy address: [ 17.619442] fff00000c4551780: fa fb fc fc fa fb fc fc 00 05 fc fc fa fb fc fc [ 17.619682] fff00000c4551800: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 17.619944] >fff00000c4551880: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 17.620044] ^ [ 17.620218] fff00000c4551900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.620282] fff00000c4551980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.620531] ==================================================================
[ 11.810534] ================================================================== [ 11.810899] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.811271] Free of addr ffff8881027a10e0 by task kunit_try_catch/209 [ 11.811517] [ 11.811650] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.811705] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.811716] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.811749] Call Trace: [ 11.811759] <TASK> [ 11.811774] dump_stack_lvl+0x73/0xb0 [ 11.811800] print_report+0xd1/0x650 [ 11.811821] ? __virt_addr_valid+0x1db/0x2d0 [ 11.811843] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.811863] ? kfree_sensitive+0x2e/0x90 [ 11.811883] kasan_report_invalid_free+0x10a/0x130 [ 11.811905] ? kfree_sensitive+0x2e/0x90 [ 11.811926] ? kfree_sensitive+0x2e/0x90 [ 11.811944] check_slab_allocation+0x101/0x130 [ 11.811964] __kasan_slab_pre_free+0x28/0x40 [ 11.811984] kfree+0xf0/0x3f0 [ 11.812004] ? kfree_sensitive+0x2e/0x90 [ 11.812116] kfree_sensitive+0x2e/0x90 [ 11.812143] kmalloc_double_kzfree+0x19c/0x350 [ 11.812165] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.812187] ? __schedule+0x10cc/0x2b60 [ 11.812225] ? __pfx_read_tsc+0x10/0x10 [ 11.812245] ? ktime_get_ts64+0x86/0x230 [ 11.812285] kunit_try_run_case+0x1a5/0x480 [ 11.812309] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.812329] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.812351] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.812372] ? __kthread_parkme+0x82/0x180 [ 11.812390] ? preempt_count_sub+0x50/0x80 [ 11.812412] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.812434] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.812455] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.812476] kthread+0x337/0x6f0 [ 11.812494] ? trace_preempt_on+0x20/0xc0 [ 11.812516] ? __pfx_kthread+0x10/0x10 [ 11.812535] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.812554] ? calculate_sigpending+0x7b/0xa0 [ 11.812576] ? __pfx_kthread+0x10/0x10 [ 11.812596] ret_from_fork+0x116/0x1d0 [ 11.812613] ? __pfx_kthread+0x10/0x10 [ 11.812632] ret_from_fork_asm+0x1a/0x30 [ 11.812660] </TASK> [ 11.812670] [ 11.821547] Allocated by task 209: [ 11.821751] kasan_save_stack+0x45/0x70 [ 11.821986] kasan_save_track+0x18/0x40 [ 11.822335] kasan_save_alloc_info+0x3b/0x50 [ 11.822526] __kasan_kmalloc+0xb7/0xc0 [ 11.822729] __kmalloc_cache_noprof+0x189/0x420 [ 11.822973] kmalloc_double_kzfree+0xa9/0x350 [ 11.823345] kunit_try_run_case+0x1a5/0x480 [ 11.823556] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.823730] kthread+0x337/0x6f0 [ 11.823861] ret_from_fork+0x116/0x1d0 [ 11.824060] ret_from_fork_asm+0x1a/0x30 [ 11.824257] [ 11.824350] Freed by task 209: [ 11.824501] kasan_save_stack+0x45/0x70 [ 11.824651] kasan_save_track+0x18/0x40 [ 11.824842] kasan_save_free_info+0x3f/0x60 [ 11.825164] __kasan_slab_free+0x56/0x70 [ 11.825338] kfree+0x222/0x3f0 [ 11.825478] kfree_sensitive+0x67/0x90 [ 11.825629] kmalloc_double_kzfree+0x12b/0x350 [ 11.825833] kunit_try_run_case+0x1a5/0x480 [ 11.826124] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.826463] kthread+0x337/0x6f0 [ 11.826673] ret_from_fork+0x116/0x1d0 [ 11.826941] ret_from_fork_asm+0x1a/0x30 [ 11.827402] [ 11.827482] The buggy address belongs to the object at ffff8881027a10e0 [ 11.827482] which belongs to the cache kmalloc-16 of size 16 [ 11.827935] The buggy address is located 0 bytes inside of [ 11.827935] 16-byte region [ffff8881027a10e0, ffff8881027a10f0) [ 11.828519] [ 11.828659] The buggy address belongs to the physical page: [ 11.828911] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027a1 [ 11.829376] flags: 0x200000000000000(node=0|zone=2) [ 11.829626] page_type: f5(slab) [ 11.829842] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.830317] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.830699] page dumped because: kasan: bad access detected [ 11.830963] [ 11.831179] Memory state around the buggy address: [ 11.831415] ffff8881027a0f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.831735] ffff8881027a1000: fa fb fc fc fa fb fc fc 00 05 fc fc fa fb fc fc [ 11.832274] >ffff8881027a1080: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.832599] ^ [ 11.832902] ffff8881027a1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.833328] ffff8881027a1180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.833614] ==================================================================