Date
July 1, 2025, 11:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.544008] ================================================================== [ 18.544099] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 18.544176] Free of addr fff00000c5d4da60 by task kunit_try_catch/193 [ 18.544224] [ 18.544265] CPU: 1 UID: 0 PID: 193 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.544496] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.544537] Hardware name: linux,dummy-virt (DT) [ 18.544571] Call trace: [ 18.544597] show_stack+0x20/0x38 (C) [ 18.544788] dump_stack_lvl+0x8c/0xd0 [ 18.544885] print_report+0x118/0x608 [ 18.545009] kasan_report_invalid_free+0xc0/0xe8 [ 18.545065] check_slab_allocation+0xd4/0x108 [ 18.545162] __kasan_slab_pre_free+0x2c/0x48 [ 18.545228] kfree+0xe8/0x3c8 [ 18.545275] kfree_sensitive+0x3c/0xb0 [ 18.545333] kmalloc_double_kzfree+0x168/0x308 [ 18.545388] kunit_try_run_case+0x170/0x3f0 [ 18.545567] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.545781] kthread+0x328/0x630 [ 18.545873] ret_from_fork+0x10/0x20 [ 18.545928] [ 18.545970] Allocated by task 193: [ 18.546023] kasan_save_stack+0x3c/0x68 [ 18.546073] kasan_save_track+0x20/0x40 [ 18.546113] kasan_save_alloc_info+0x40/0x58 [ 18.546201] __kasan_kmalloc+0xd4/0xd8 [ 18.546252] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.546318] kmalloc_double_kzfree+0xb8/0x308 [ 18.546391] kunit_try_run_case+0x170/0x3f0 [ 18.546442] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.546496] kthread+0x328/0x630 [ 18.546534] ret_from_fork+0x10/0x20 [ 18.546574] [ 18.546596] Freed by task 193: [ 18.546626] kasan_save_stack+0x3c/0x68 [ 18.546678] kasan_save_track+0x20/0x40 [ 18.546750] kasan_save_free_info+0x4c/0x78 [ 18.546796] __kasan_slab_free+0x6c/0x98 [ 18.546837] kfree+0x214/0x3c8 [ 18.546873] kfree_sensitive+0x80/0xb0 [ 18.547040] kmalloc_double_kzfree+0x11c/0x308 [ 18.547222] kunit_try_run_case+0x170/0x3f0 [ 18.547336] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.547411] kthread+0x328/0x630 [ 18.547447] ret_from_fork+0x10/0x20 [ 18.547488] [ 18.547511] The buggy address belongs to the object at fff00000c5d4da60 [ 18.547511] which belongs to the cache kmalloc-16 of size 16 [ 18.547593] The buggy address is located 0 bytes inside of [ 18.547593] 16-byte region [fff00000c5d4da60, fff00000c5d4da70) [ 18.547672] [ 18.547702] The buggy address belongs to the physical page: [ 18.547749] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105d4d [ 18.547809] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.547877] page_type: f5(slab) [ 18.547924] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 18.547986] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 18.548032] page dumped because: kasan: bad access detected [ 18.548068] [ 18.548093] Memory state around the buggy address: [ 18.548143] fff00000c5d4d900: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.548192] fff00000c5d4d980: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.548243] >fff00000c5d4da00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 18.548295] ^ [ 18.548347] fff00000c5d4da80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.548411] fff00000c5d4db00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.548457] ==================================================================
[ 11.851524] ================================================================== [ 11.851930] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 11.852258] Free of addr ffff88810228a880 by task kunit_try_catch/209 [ 11.852562] [ 11.852727] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.852771] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.852783] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.852803] Call Trace: [ 11.852817] <TASK> [ 11.852835] dump_stack_lvl+0x73/0xb0 [ 11.852864] print_report+0xd1/0x650 [ 11.852909] ? __virt_addr_valid+0x1db/0x2d0 [ 11.852932] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.852953] ? kfree_sensitive+0x2e/0x90 [ 11.852987] kasan_report_invalid_free+0x10a/0x130 [ 11.853024] ? kfree_sensitive+0x2e/0x90 [ 11.853058] ? kfree_sensitive+0x2e/0x90 [ 11.853124] check_slab_allocation+0x101/0x130 [ 11.853148] __kasan_slab_pre_free+0x28/0x40 [ 11.853167] kfree+0xf0/0x3f0 [ 11.853188] ? kfree_sensitive+0x2e/0x90 [ 11.853209] kfree_sensitive+0x2e/0x90 [ 11.853228] kmalloc_double_kzfree+0x19c/0x350 [ 11.853250] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 11.853272] ? __schedule+0x10cc/0x2b60 [ 11.853294] ? __pfx_read_tsc+0x10/0x10 [ 11.853314] ? ktime_get_ts64+0x86/0x230 [ 11.853337] kunit_try_run_case+0x1a5/0x480 [ 11.853360] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.853394] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.853439] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.853460] ? __kthread_parkme+0x82/0x180 [ 11.853494] ? preempt_count_sub+0x50/0x80 [ 11.853517] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.853540] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.853562] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.853584] kthread+0x337/0x6f0 [ 11.853602] ? trace_preempt_on+0x20/0xc0 [ 11.853624] ? __pfx_kthread+0x10/0x10 [ 11.853643] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.853663] ? calculate_sigpending+0x7b/0xa0 [ 11.853685] ? __pfx_kthread+0x10/0x10 [ 11.853705] ret_from_fork+0x116/0x1d0 [ 11.853722] ? __pfx_kthread+0x10/0x10 [ 11.853741] ret_from_fork_asm+0x1a/0x30 [ 11.853771] </TASK> [ 11.853782] [ 11.863421] Allocated by task 209: [ 11.863658] kasan_save_stack+0x45/0x70 [ 11.863996] kasan_save_track+0x18/0x40 [ 11.864209] kasan_save_alloc_info+0x3b/0x50 [ 11.864426] __kasan_kmalloc+0xb7/0xc0 [ 11.864634] __kmalloc_cache_noprof+0x189/0x420 [ 11.864861] kmalloc_double_kzfree+0xa9/0x350 [ 11.865078] kunit_try_run_case+0x1a5/0x480 [ 11.865286] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.865508] kthread+0x337/0x6f0 [ 11.865632] ret_from_fork+0x116/0x1d0 [ 11.865764] ret_from_fork_asm+0x1a/0x30 [ 11.866326] [ 11.866459] Freed by task 209: [ 11.866693] kasan_save_stack+0x45/0x70 [ 11.866890] kasan_save_track+0x18/0x40 [ 11.867175] kasan_save_free_info+0x3f/0x60 [ 11.867329] __kasan_slab_free+0x56/0x70 [ 11.867511] kfree+0x222/0x3f0 [ 11.867719] kfree_sensitive+0x67/0x90 [ 11.867911] kmalloc_double_kzfree+0x12b/0x350 [ 11.868171] kunit_try_run_case+0x1a5/0x480 [ 11.868494] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.868821] kthread+0x337/0x6f0 [ 11.868946] ret_from_fork+0x116/0x1d0 [ 11.869097] ret_from_fork_asm+0x1a/0x30 [ 11.869322] [ 11.869434] The buggy address belongs to the object at ffff88810228a880 [ 11.869434] which belongs to the cache kmalloc-16 of size 16 [ 11.870168] The buggy address is located 0 bytes inside of [ 11.870168] 16-byte region [ffff88810228a880, ffff88810228a890) [ 11.870769] [ 11.870904] The buggy address belongs to the physical page: [ 11.871181] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10228a [ 11.871706] flags: 0x200000000000000(node=0|zone=2) [ 11.871989] page_type: f5(slab) [ 11.872167] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.872594] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.872887] page dumped because: kasan: bad access detected [ 11.873058] [ 11.873191] Memory state around the buggy address: [ 11.873672] ffff88810228a780: 00 02 fc fc 00 02 fc fc 00 02 fc fc fa fb fc fc [ 11.874265] ffff88810228a800: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 11.874664] >ffff88810228a880: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.875002] ^ [ 11.875301] ffff88810228a900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.875714] ffff88810228a980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.876023] ==================================================================