Date
July 16, 2025, 3:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.794083] ================================================================== [ 16.794154] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 16.794204] Free of addr fff00000c3eef5a0 by task kunit_try_catch/192 [ 16.794245] [ 16.794276] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.794360] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.794386] Hardware name: linux,dummy-virt (DT) [ 16.794417] Call trace: [ 16.794438] show_stack+0x20/0x38 (C) [ 16.794484] dump_stack_lvl+0x8c/0xd0 [ 16.794532] print_report+0x118/0x5d0 [ 16.794579] kasan_report_invalid_free+0xc0/0xe8 [ 16.794627] check_slab_allocation+0xd4/0x108 [ 16.794674] __kasan_slab_pre_free+0x2c/0x48 [ 16.794734] kfree+0xe8/0x3c8 [ 16.794806] kfree_sensitive+0x3c/0xb0 [ 16.794851] kmalloc_double_kzfree+0x168/0x308 [ 16.794917] kunit_try_run_case+0x170/0x3f0 [ 16.794989] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.795047] kthread+0x328/0x630 [ 16.795093] ret_from_fork+0x10/0x20 [ 16.795140] [ 16.795158] Allocated by task 192: [ 16.795194] kasan_save_stack+0x3c/0x68 [ 16.795235] kasan_save_track+0x20/0x40 [ 16.795272] kasan_save_alloc_info+0x40/0x58 [ 16.795317] __kasan_kmalloc+0xd4/0xd8 [ 16.795365] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.795406] kmalloc_double_kzfree+0xb8/0x308 [ 16.795444] kunit_try_run_case+0x170/0x3f0 [ 16.795484] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.795528] kthread+0x328/0x630 [ 16.795570] ret_from_fork+0x10/0x20 [ 16.795608] [ 16.795625] Freed by task 192: [ 16.795654] kasan_save_stack+0x3c/0x68 [ 16.795701] kasan_save_track+0x20/0x40 [ 16.795747] kasan_save_free_info+0x4c/0x78 [ 16.795789] __kasan_slab_free+0x6c/0x98 [ 16.795831] kfree+0x214/0x3c8 [ 16.795865] kfree_sensitive+0x80/0xb0 [ 16.795901] kmalloc_double_kzfree+0x11c/0x308 [ 16.795940] kunit_try_run_case+0x170/0x3f0 [ 16.795979] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.796027] kthread+0x328/0x630 [ 16.796059] ret_from_fork+0x10/0x20 [ 16.796095] [ 16.796118] The buggy address belongs to the object at fff00000c3eef5a0 [ 16.796118] which belongs to the cache kmalloc-16 of size 16 [ 16.796177] The buggy address is located 0 bytes inside of [ 16.796177] 16-byte region [fff00000c3eef5a0, fff00000c3eef5b0) [ 16.796237] [ 16.796262] The buggy address belongs to the physical page: [ 16.796294] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103eef [ 16.796347] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.796394] page_type: f5(slab) [ 16.796430] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.796480] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.796526] page dumped because: kasan: bad access detected [ 16.796558] [ 16.796577] Memory state around the buggy address: [ 16.796609] fff00000c3eef480: fa fb fc fc fa fb fc fc 00 04 fc fc fa fb fc fc [ 16.796661] fff00000c3eef500: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.796705] >fff00000c3eef580: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 16.797230] ^ [ 16.797287] fff00000c3eef600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.797332] fff00000c3eef680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.797372] ==================================================================
[ 12.952995] ================================================================== [ 12.953688] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.954548] Free of addr ffff8881009b2fe0 by task kunit_try_catch/209 [ 12.955359] [ 12.955733] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.955794] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.955806] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.955826] Call Trace: [ 12.955837] <TASK> [ 12.955853] dump_stack_lvl+0x73/0xb0 [ 12.955886] print_report+0xd1/0x610 [ 12.955910] ? __virt_addr_valid+0x1db/0x2d0 [ 12.955934] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.955957] ? kfree_sensitive+0x2e/0x90 [ 12.955979] kasan_report_invalid_free+0x10a/0x130 [ 12.956022] ? kfree_sensitive+0x2e/0x90 [ 12.956044] ? kfree_sensitive+0x2e/0x90 [ 12.956064] check_slab_allocation+0x101/0x130 [ 12.956087] __kasan_slab_pre_free+0x28/0x40 [ 12.956109] kfree+0xf0/0x3f0 [ 12.956130] ? kfree_sensitive+0x2e/0x90 [ 12.956153] kfree_sensitive+0x2e/0x90 [ 12.956173] kmalloc_double_kzfree+0x19c/0x350 [ 12.956197] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.956222] ? __schedule+0x10cc/0x2b60 [ 12.956246] ? __pfx_read_tsc+0x10/0x10 [ 12.956267] ? ktime_get_ts64+0x86/0x230 [ 12.956292] kunit_try_run_case+0x1a5/0x480 [ 12.956317] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.956341] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.956366] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.956390] ? __kthread_parkme+0x82/0x180 [ 12.956410] ? preempt_count_sub+0x50/0x80 [ 12.956435] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.956461] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.956486] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.956512] kthread+0x337/0x6f0 [ 12.956531] ? trace_preempt_on+0x20/0xc0 [ 12.956555] ? __pfx_kthread+0x10/0x10 [ 12.956576] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.956598] ? calculate_sigpending+0x7b/0xa0 [ 12.956623] ? __pfx_kthread+0x10/0x10 [ 12.956644] ret_from_fork+0x116/0x1d0 [ 12.956663] ? __pfx_kthread+0x10/0x10 [ 12.956683] ret_from_fork_asm+0x1a/0x30 [ 12.956714] </TASK> [ 12.956724] [ 12.971600] Allocated by task 209: [ 12.971774] kasan_save_stack+0x45/0x70 [ 12.971926] kasan_save_track+0x18/0x40 [ 12.972269] kasan_save_alloc_info+0x3b/0x50 [ 12.972660] __kasan_kmalloc+0xb7/0xc0 [ 12.973006] __kmalloc_cache_noprof+0x189/0x420 [ 12.973544] kmalloc_double_kzfree+0xa9/0x350 [ 12.973937] kunit_try_run_case+0x1a5/0x480 [ 12.974168] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.974710] kthread+0x337/0x6f0 [ 12.975041] ret_from_fork+0x116/0x1d0 [ 12.975514] ret_from_fork_asm+0x1a/0x30 [ 12.975878] [ 12.975952] Freed by task 209: [ 12.976267] kasan_save_stack+0x45/0x70 [ 12.976646] kasan_save_track+0x18/0x40 [ 12.976796] kasan_save_free_info+0x3f/0x60 [ 12.976947] __kasan_slab_free+0x56/0x70 [ 12.977358] kfree+0x222/0x3f0 [ 12.977663] kfree_sensitive+0x67/0x90 [ 12.978148] kmalloc_double_kzfree+0x12b/0x350 [ 12.978570] kunit_try_run_case+0x1a5/0x480 [ 12.978958] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.979349] kthread+0x337/0x6f0 [ 12.979496] ret_from_fork+0x116/0x1d0 [ 12.979854] ret_from_fork_asm+0x1a/0x30 [ 12.980262] [ 12.980421] The buggy address belongs to the object at ffff8881009b2fe0 [ 12.980421] which belongs to the cache kmalloc-16 of size 16 [ 12.981235] The buggy address is located 0 bytes inside of [ 12.981235] 16-byte region [ffff8881009b2fe0, ffff8881009b2ff0) [ 12.981798] [ 12.981955] The buggy address belongs to the physical page: [ 12.982585] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1009b2 [ 12.983454] flags: 0x200000000000000(node=0|zone=2) [ 12.984003] page_type: f5(slab) [ 12.984353] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.984680] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.984922] page dumped because: kasan: bad access detected [ 12.985393] [ 12.985587] Memory state around the buggy address: [ 12.986145] ffff8881009b2e80: 00 00 fc fc 00 06 fc fc 00 06 fc fc 00 00 fc fc [ 12.986933] ffff8881009b2f00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.987697] >ffff8881009b2f80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.988267] ^ [ 12.988746] ffff8881009b3000: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 12.989032] ffff8881009b3080: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 12.989782] ==================================================================