Date
July 5, 2025, 5:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.454176] ================================================================== [ 18.454243] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 18.454289] Free of addr fff00000c5cb3720 by task kunit_try_catch/192 [ 18.454408] [ 18.454521] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.454600] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.454626] Hardware name: linux,dummy-virt (DT) [ 18.454676] Call trace: [ 18.454705] show_stack+0x20/0x38 (C) [ 18.454850] dump_stack_lvl+0x8c/0xd0 [ 18.454909] print_report+0x118/0x608 [ 18.454955] kasan_report_invalid_free+0xc0/0xe8 [ 18.455004] check_slab_allocation+0xd4/0x108 [ 18.455059] __kasan_slab_pre_free+0x2c/0x48 [ 18.455107] kfree+0xe8/0x3c8 [ 18.455148] kfree_sensitive+0x3c/0xb0 [ 18.455191] kmalloc_double_kzfree+0x168/0x308 [ 18.455239] kunit_try_run_case+0x170/0x3f0 [ 18.455285] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.455343] kthread+0x328/0x630 [ 18.455400] ret_from_fork+0x10/0x20 [ 18.455453] [ 18.455471] Allocated by task 192: [ 18.455526] kasan_save_stack+0x3c/0x68 [ 18.455566] kasan_save_track+0x20/0x40 [ 18.455607] kasan_save_alloc_info+0x40/0x58 [ 18.455649] __kasan_kmalloc+0xd4/0xd8 [ 18.455686] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.455723] kmalloc_double_kzfree+0xb8/0x308 [ 18.455770] kunit_try_run_case+0x170/0x3f0 [ 18.455820] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.455909] kthread+0x328/0x630 [ 18.456207] ret_from_fork+0x10/0x20 [ 18.456263] [ 18.456343] Freed by task 192: [ 18.456438] kasan_save_stack+0x3c/0x68 [ 18.456477] kasan_save_track+0x20/0x40 [ 18.456515] kasan_save_free_info+0x4c/0x78 [ 18.456553] __kasan_slab_free+0x6c/0x98 [ 18.456630] kfree+0x214/0x3c8 [ 18.456770] kfree_sensitive+0x80/0xb0 [ 18.456806] kmalloc_double_kzfree+0x11c/0x308 [ 18.456985] kunit_try_run_case+0x170/0x3f0 [ 18.457043] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.457147] kthread+0x328/0x630 [ 18.457236] ret_from_fork+0x10/0x20 [ 18.457289] [ 18.457307] The buggy address belongs to the object at fff00000c5cb3720 [ 18.457307] which belongs to the cache kmalloc-16 of size 16 [ 18.457361] The buggy address is located 0 bytes inside of [ 18.457361] 16-byte region [fff00000c5cb3720, fff00000c5cb3730) [ 18.457419] [ 18.457438] The buggy address belongs to the physical page: [ 18.457517] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105cb3 [ 18.457568] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.457661] page_type: f5(slab) [ 18.457745] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.458476] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.458538] page dumped because: kasan: bad access detected [ 18.458631] [ 18.458654] Memory state around the buggy address: [ 18.458726] fff00000c5cb3600: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.458776] fff00000c5cb3680: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.458818] >fff00000c5cb3700: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 18.458855] ^ [ 18.458895] fff00000c5cb3780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.458937] fff00000c5cb3800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.458975] ==================================================================
[ 11.964837] ================================================================== [ 11.965120] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.965655] Free of addr ffff88810274c260 by task kunit_try_catch/210 [ 11.966001] [ 11.966112] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.966154] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.966165] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.966185] Call Trace: [ 11.966243] <TASK> [ 11.966259] dump_stack_lvl+0x73/0xb0 [ 11.966288] print_report+0xd1/0x650 [ 11.966310] ? __virt_addr_valid+0x1db/0x2d0 [ 11.966332] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.966353] ? kfree_sensitive+0x2e/0x90 [ 11.966373] kasan_report_invalid_free+0x10a/0x130 [ 11.966397] ? kfree_sensitive+0x2e/0x90 [ 11.966418] ? kfree_sensitive+0x2e/0x90 [ 11.966436] check_slab_allocation+0x101/0x130 [ 11.966473] __kasan_slab_pre_free+0x28/0x40 [ 11.966494] kfree+0xf0/0x3f0 [ 11.966516] ? kfree_sensitive+0x2e/0x90 [ 11.966537] kfree_sensitive+0x2e/0x90 [ 11.966556] kmalloc_double_kzfree+0x19c/0x350 [ 11.966578] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.966601] ? __schedule+0x10cc/0x2b60 [ 11.966623] ? __pfx_read_tsc+0x10/0x10 [ 11.966643] ? ktime_get_ts64+0x86/0x230 [ 11.966665] kunit_try_run_case+0x1a5/0x480 [ 11.966689] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.966710] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.966732] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.966754] ? __kthread_parkme+0x82/0x180 [ 11.966772] ? preempt_count_sub+0x50/0x80 [ 11.966795] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.966817] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.966838] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.966860] kthread+0x337/0x6f0 [ 11.966879] ? trace_preempt_on+0x20/0xc0 [ 11.966900] ? __pfx_kthread+0x10/0x10 [ 11.966920] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.966940] ? calculate_sigpending+0x7b/0xa0 [ 11.966962] ? __pfx_kthread+0x10/0x10 [ 11.966983] ret_from_fork+0x116/0x1d0 [ 11.967000] ? __pfx_kthread+0x10/0x10 [ 11.967019] ret_from_fork_asm+0x1a/0x30 [ 11.967049] </TASK> [ 11.967061] [ 11.975273] Allocated by task 210: [ 11.975444] kasan_save_stack+0x45/0x70 [ 11.975597] kasan_save_track+0x18/0x40 [ 11.975755] kasan_save_alloc_info+0x3b/0x50 [ 11.975969] __kasan_kmalloc+0xb7/0xc0 [ 11.976152] __kmalloc_cache_noprof+0x189/0x420 [ 11.976377] kmalloc_double_kzfree+0xa9/0x350 [ 11.976782] kunit_try_run_case+0x1a5/0x480 [ 11.976940] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.977245] kthread+0x337/0x6f0 [ 11.977441] ret_from_fork+0x116/0x1d0 [ 11.977632] ret_from_fork_asm+0x1a/0x30 [ 11.977825] [ 11.977898] Freed by task 210: [ 11.978054] kasan_save_stack+0x45/0x70 [ 11.978298] kasan_save_track+0x18/0x40 [ 11.978490] kasan_save_free_info+0x3f/0x60 [ 11.978644] __kasan_slab_free+0x56/0x70 [ 11.978955] kfree+0x222/0x3f0 [ 11.979098] kfree_sensitive+0x67/0x90 [ 11.979331] kmalloc_double_kzfree+0x12b/0x350 [ 11.979521] kunit_try_run_case+0x1a5/0x480 [ 11.979725] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.980080] kthread+0x337/0x6f0 [ 11.980203] ret_from_fork+0x116/0x1d0 [ 11.980336] ret_from_fork_asm+0x1a/0x30 [ 11.980530] [ 11.980629] The buggy address belongs to the object at ffff88810274c260 [ 11.980629] which belongs to the cache kmalloc-16 of size 16 [ 11.981633] The buggy address is located 0 bytes inside of [ 11.981633] 16-byte region [ffff88810274c260, ffff88810274c270) [ 11.981976] [ 11.982051] The buggy address belongs to the physical page: [ 11.982224] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10274c [ 11.982568] flags: 0x200000000000000(node=0|zone=2) [ 11.982801] page_type: f5(slab) [ 11.982973] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.983598] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.984181] page dumped because: kasan: bad access detected [ 11.984353] [ 11.984424] Memory state around the buggy address: [ 11.984590] ffff88810274c100: 00 02 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 11.984805] ffff88810274c180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.985024] >ffff88810274c200: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.985669] ^ [ 11.985964] ffff88810274c280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.986286] ffff88810274c300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.986631] ==================================================================