Date
July 3, 2025, 10:10 a.m.
| Environment | |
|---|---|
| dragonboard-845c | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 42.482103] ================================================================== [ 42.489417] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 42.495514] Free of addr ffff0000955dd4a0 by task kunit_try_catch/301 [ 42.502040] [ 42.503573] CPU: 7 UID: 0 PID: 301 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT [ 42.503602] Tainted: [B]=BAD_PAGE, [N]=TEST [ 42.503609] Hardware name: Thundercomm Dragonboard 845c (DT) [ 42.503621] Call trace: [ 42.503628] show_stack+0x20/0x38 (C) [ 42.503646] dump_stack_lvl+0x8c/0xd0 [ 42.503664] print_report+0x118/0x608 [ 42.503682] kasan_report_invalid_free+0xc0/0xe8 [ 42.503703] check_slab_allocation+0xd4/0x108 [ 42.503722] __kasan_slab_pre_free+0x2c/0x48 [ 42.503741] kfree+0xe8/0x3c8 [ 42.503757] kfree_sensitive+0x3c/0xb0 [ 42.503773] kmalloc_double_kzfree+0x168/0x308 [ 42.503791] kunit_try_run_case+0x170/0x3f0 [ 42.503809] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 42.503830] kthread+0x328/0x630 [ 42.503843] ret_from_fork+0x10/0x20 [ 42.503860] [ 42.581525] Allocated by task 301: [ 42.584977] kasan_save_stack+0x3c/0x68 [ 42.588883] kasan_save_track+0x20/0x40 [ 42.592789] kasan_save_alloc_info+0x40/0x58 [ 42.597124] __kasan_kmalloc+0xd4/0xd8 [ 42.600940] __kmalloc_cache_noprof+0x16c/0x3c0 [ 42.605538] kmalloc_double_kzfree+0xb8/0x308 [ 42.609960] kunit_try_run_case+0x170/0x3f0 [ 42.614209] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 42.619773] kthread+0x328/0x630 [ 42.623058] ret_from_fork+0x10/0x20 [ 42.626690] [ 42.628220] Freed by task 301: [ 42.631325] kasan_save_stack+0x3c/0x68 [ 42.635220] kasan_save_track+0x20/0x40 [ 42.639124] kasan_save_free_info+0x4c/0x78 [ 42.643369] __kasan_slab_free+0x6c/0x98 [ 42.647361] kfree+0x214/0x3c8 [ 42.650473] kfree_sensitive+0x80/0xb0 [ 42.654288] kmalloc_double_kzfree+0x11c/0x308 [ 42.658799] kunit_try_run_case+0x170/0x3f0 [ 42.663049] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 42.668612] kthread+0x328/0x630 [ 42.671894] ret_from_fork+0x10/0x20 [ 42.675536] [ 42.677060] The buggy address belongs to the object at ffff0000955dd4a0 [ 42.677060] which belongs to the cache kmalloc-16 of size 16 [ 42.689538] The buggy address is located 0 bytes inside of [ 42.689538] 16-byte region [ffff0000955dd4a0, ffff0000955dd4b0) [ 42.701139] [ 42.702665] The buggy address belongs to the physical page: [ 42.708312] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1155dd [ 42.716411] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 42.723028] page_type: f5(slab) [ 42.726226] raw: 0bfffe0000000000 ffff000080002640 dead000000000122 0000000000000000 [ 42.734067] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 42.741904] page dumped because: kasan: bad access detected [ 42.747543] [ 42.749066] Memory state around the buggy address: [ 42.753917] ffff0000955dd380: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 42.761237] ffff0000955dd400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 42.768556] >ffff0000955dd480: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 42.775869] ^ [ 42.780202] ffff0000955dd500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.787520] ffff0000955dd580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.794827] ==================================================================
[ 31.277718] ================================================================== [ 31.277963] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 31.278109] Free of addr fff00000c5a30cc0 by task kunit_try_catch/224 [ 31.278327] [ 31.278397] CPU: 0 UID: 0 PID: 224 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT [ 31.278793] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.278845] Hardware name: linux,dummy-virt (DT) [ 31.278880] Call trace: [ 31.278991] show_stack+0x20/0x38 (C) [ 31.279054] dump_stack_lvl+0x8c/0xd0 [ 31.279211] print_report+0x118/0x608 [ 31.279263] kasan_report_invalid_free+0xc0/0xe8 [ 31.279373] check_slab_allocation+0xd4/0x108 [ 31.279425] __kasan_slab_pre_free+0x2c/0x48 [ 31.279689] kfree+0xe8/0x3c8 [ 31.279773] kfree_sensitive+0x3c/0xb0 [ 31.279967] kmalloc_double_kzfree+0x168/0x308 [ 31.280035] kunit_try_run_case+0x170/0x3f0 [ 31.280102] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.280196] kthread+0x328/0x630 [ 31.280240] ret_from_fork+0x10/0x20 [ 31.280995] [ 31.281097] Allocated by task 224: [ 31.281223] kasan_save_stack+0x3c/0x68 [ 31.281292] kasan_save_track+0x20/0x40 [ 31.281350] kasan_save_alloc_info+0x40/0x58 [ 31.281391] __kasan_kmalloc+0xd4/0xd8 [ 31.281719] __kmalloc_cache_noprof+0x16c/0x3c0 [ 31.282054] kmalloc_double_kzfree+0xb8/0x308 [ 31.282235] kunit_try_run_case+0x170/0x3f0 [ 31.282656] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.282759] kthread+0x328/0x630 [ 31.283024] ret_from_fork+0x10/0x20 [ 31.283081] [ 31.283150] Freed by task 224: [ 31.283214] kasan_save_stack+0x3c/0x68 [ 31.284065] kasan_save_track+0x20/0x40 [ 31.284165] kasan_save_free_info+0x4c/0x78 [ 31.284342] __kasan_slab_free+0x6c/0x98 [ 31.284497] kfree+0x214/0x3c8 [ 31.284560] kfree_sensitive+0x80/0xb0 [ 31.284606] kmalloc_double_kzfree+0x11c/0x308 [ 31.285024] kunit_try_run_case+0x170/0x3f0 [ 31.285091] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.285456] kthread+0x328/0x630 [ 31.285610] ret_from_fork+0x10/0x20 [ 31.285754] [ 31.285856] The buggy address belongs to the object at fff00000c5a30cc0 [ 31.285856] which belongs to the cache kmalloc-16 of size 16 [ 31.286007] The buggy address is located 0 bytes inside of [ 31.286007] 16-byte region [fff00000c5a30cc0, fff00000c5a30cd0) [ 31.286090] [ 31.286159] The buggy address belongs to the physical page: [ 31.286209] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xfff00000c5a30be0 pfn:0x105a30 [ 31.286268] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.286332] page_type: f5(slab) [ 31.286387] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 31.286438] raw: fff00000c5a30be0 000000008080007f 00000000f5000000 0000000000000000 [ 31.286479] page dumped because: kasan: bad access detected [ 31.286511] [ 31.286531] Memory state around the buggy address: [ 31.286562] fff00000c5a30b80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 31.286615] fff00000c5a30c00: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 31.286673] >fff00000c5a30c80: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 31.286724] ^ [ 31.286760] fff00000c5a30d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.286829] fff00000c5a30d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.286889] ==================================================================
[ 23.500041] ================================================================== [ 23.500636] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 23.501002] Free of addr ffff8881054e0a20 by task kunit_try_catch/241 [ 23.501438] [ 23.501544] CPU: 1 UID: 0 PID: 241 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) [ 23.501589] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.501601] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 23.501632] Call Trace: [ 23.501848] <TASK> [ 23.501866] dump_stack_lvl+0x73/0xb0 [ 23.501895] print_report+0xd1/0x650 [ 23.501917] ? __virt_addr_valid+0x1db/0x2d0 [ 23.501940] ? kasan_complete_mode_report_info+0x64/0x200 [ 23.501965] ? kfree_sensitive+0x2e/0x90 [ 23.501989] kasan_report_invalid_free+0x10a/0x130 [ 23.502012] ? kfree_sensitive+0x2e/0x90 [ 23.502037] ? kfree_sensitive+0x2e/0x90 [ 23.502060] check_slab_allocation+0x101/0x130 [ 23.502084] __kasan_slab_pre_free+0x28/0x40 [ 23.502104] kfree+0xf0/0x3f0 [ 23.502124] ? kfree_sensitive+0x2e/0x90 [ 23.502193] kfree_sensitive+0x2e/0x90 [ 23.502219] kmalloc_double_kzfree+0x19c/0x350 [ 23.502241] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 23.502264] ? __schedule+0x10cc/0x2b60 [ 23.502289] ? __pfx_read_tsc+0x10/0x10 [ 23.502310] ? ktime_get_ts64+0x86/0x230 [ 23.502334] kunit_try_run_case+0x1a5/0x480 [ 23.502358] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.502380] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 23.502401] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 23.502426] ? __kthread_parkme+0x82/0x180 [ 23.502445] ? preempt_count_sub+0x50/0x80 [ 23.502482] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.502506] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.502530] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 23.502553] kthread+0x337/0x6f0 [ 23.502572] ? trace_preempt_on+0x20/0xc0 [ 23.502593] ? __pfx_kthread+0x10/0x10 [ 23.502613] ? _raw_spin_unlock_irq+0x47/0x80 [ 23.502636] ? calculate_sigpending+0x7b/0xa0 [ 23.502659] ? __pfx_kthread+0x10/0x10 [ 23.502681] ret_from_fork+0x116/0x1d0 [ 23.502699] ? __pfx_kthread+0x10/0x10 [ 23.502719] ret_from_fork_asm+0x1a/0x30 [ 23.502749] </TASK> [ 23.502759] [ 23.513255] Allocated by task 241: [ 23.513415] kasan_save_stack+0x45/0x70 [ 23.513836] kasan_save_track+0x18/0x40 [ 23.514034] kasan_save_alloc_info+0x3b/0x50 [ 23.514553] __kasan_kmalloc+0xb7/0xc0 [ 23.514726] __kmalloc_cache_noprof+0x189/0x420 [ 23.515057] kmalloc_double_kzfree+0xa9/0x350 [ 23.515281] kunit_try_run_case+0x1a5/0x480 [ 23.515645] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.515976] kthread+0x337/0x6f0 [ 23.516104] ret_from_fork+0x116/0x1d0 [ 23.516318] ret_from_fork_asm+0x1a/0x30 [ 23.516817] [ 23.516889] Freed by task 241: [ 23.517029] kasan_save_stack+0x45/0x70 [ 23.517217] kasan_save_track+0x18/0x40 [ 23.517476] kasan_save_free_info+0x3f/0x60 [ 23.518056] __kasan_slab_free+0x56/0x70 [ 23.518198] kfree+0x222/0x3f0 [ 23.518593] kfree_sensitive+0x67/0x90 [ 23.518840] kmalloc_double_kzfree+0x12b/0x350 [ 23.519013] kunit_try_run_case+0x1a5/0x480 [ 23.519247] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.519848] kthread+0x337/0x6f0 [ 23.520069] ret_from_fork+0x116/0x1d0 [ 23.520353] ret_from_fork_asm+0x1a/0x30 [ 23.520554] [ 23.520631] The buggy address belongs to the object at ffff8881054e0a20 [ 23.520631] which belongs to the cache kmalloc-16 of size 16 [ 23.521101] The buggy address is located 0 bytes inside of [ 23.521101] 16-byte region [ffff8881054e0a20, ffff8881054e0a30) [ 23.521884] [ 23.521974] The buggy address belongs to the physical page: [ 23.522771] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1054e0 [ 23.523098] flags: 0x200000000000000(node=0|zone=2) [ 23.523556] page_type: f5(slab) [ 23.523736] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122 [ 23.524151] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 23.524658] page dumped because: kasan: bad access detected [ 23.524859] [ 23.525072] Memory state around the buggy address: [ 23.525398] ffff8881054e0900: 00 00 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 23.525991] ffff8881054e0980: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 23.526424] >ffff8881054e0a00: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 23.526790] ^ [ 23.526991] ffff8881054e0a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.527595] ffff8881054e0b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.527891] ==================================================================