Date
June 26, 2025, 9:10 a.m.
| Environment | |
|---|---|
| dragonboard-845c | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 41.652057] ================================================================== [ 41.659370] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 41.665459] Free of addr ffff000094759bc0 by task kunit_try_catch/278 [ 41.671985] [ 41.673511] CPU: 6 UID: 0 PID: 278 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250626 #1 PREEMPT [ 41.673541] Tainted: [B]=BAD_PAGE, [N]=TEST [ 41.673548] Hardware name: Thundercomm Dragonboard 845c (DT) [ 41.673557] Call trace: [ 41.673564] show_stack+0x20/0x38 (C) [ 41.673581] dump_stack_lvl+0x8c/0xd0 [ 41.673598] print_report+0x118/0x608 [ 41.673615] kasan_report_invalid_free+0xc0/0xe8 [ 41.673634] check_slab_allocation+0xd4/0x108 [ 41.673653] __kasan_slab_pre_free+0x2c/0x48 [ 41.673671] kfree+0xe8/0x3c8 [ 41.673685] kfree_sensitive+0x3c/0xb0 [ 41.673701] kmalloc_double_kzfree+0x168/0x308 [ 41.673717] kunit_try_run_case+0x170/0x3f0 [ 41.673733] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 41.673753] kthread+0x328/0x630 [ 41.673768] ret_from_fork+0x10/0x20 [ 41.673784] [ 41.751434] Allocated by task 278: [ 41.754889] kasan_save_stack+0x3c/0x68 [ 41.758794] kasan_save_track+0x20/0x40 [ 41.762688] kasan_save_alloc_info+0x40/0x58 [ 41.767023] __kasan_kmalloc+0xd4/0xd8 [ 41.770829] __kmalloc_cache_noprof+0x16c/0x3c0 [ 41.775426] kmalloc_double_kzfree+0xb8/0x308 [ 41.779848] kunit_try_run_case+0x170/0x3f0 [ 41.784098] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 41.789664] kthread+0x328/0x630 [ 41.792948] ret_from_fork+0x10/0x20 [ 41.796577] [ 41.798098] Freed by task 278: [ 41.801202] kasan_save_stack+0x3c/0x68 [ 41.805098] kasan_save_track+0x20/0x40 [ 41.808992] kasan_save_free_info+0x4c/0x78 [ 41.813240] __kasan_slab_free+0x6c/0x98 [ 41.817229] kfree+0x214/0x3c8 [ 41.820339] kfree_sensitive+0x80/0xb0 [ 41.824144] kmalloc_double_kzfree+0x11c/0x308 [ 41.828656] kunit_try_run_case+0x170/0x3f0 [ 41.832906] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 41.838471] kthread+0x328/0x630 [ 41.841753] ret_from_fork+0x10/0x20 [ 41.845384] [ 41.846907] The buggy address belongs to the object at ffff000094759bc0 [ 41.846907] which belongs to the cache kmalloc-16 of size 16 [ 41.859386] The buggy address is located 0 bytes inside of [ 41.859386] 16-byte region [ffff000094759bc0, ffff000094759bd0) [ 41.870994] [ 41.872525] The buggy address belongs to the physical page: [ 41.878167] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x114759 [ 41.886270] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 41.892885] page_type: f5(slab) [ 41.896079] raw: 0bfffe0000000000 ffff000080002640 dead000000000122 0000000000000000 [ 41.903922] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 41.911760] page dumped because: kasan: bad access detected [ 41.917403] [ 41.918926] Memory state around the buggy address: [ 41.923776] ffff000094759a80: 00 02 fc fc 00 02 fc fc 00 03 fc fc 00 03 fc fc [ 41.931087] ffff000094759b00: 00 03 fc fc 00 03 fc fc 00 03 fc fc 00 03 fc fc [ 41.938393] >ffff000094759b80: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 41.945698] ^ [ 41.951085] ffff000094759c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 41.958390] ffff000094759c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 41.965696] ==================================================================
[ 27.020930] ================================================================== [ 27.021002] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 27.021049] Free of addr fff00000c16b9ca0 by task kunit_try_catch/204 [ 27.021105] [ 27.021132] CPU: 0 UID: 0 PID: 204 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250626 #1 PREEMPT [ 27.021219] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.021247] Hardware name: linux,dummy-virt (DT) [ 27.021277] Call trace: [ 27.021298] show_stack+0x20/0x38 (C) [ 27.021346] dump_stack_lvl+0x8c/0xd0 [ 27.021393] print_report+0x118/0x608 [ 27.021437] kasan_report_invalid_free+0xc0/0xe8 [ 27.023198] check_slab_allocation+0xd4/0x108 [ 27.023813] __kasan_slab_pre_free+0x2c/0x48 [ 27.024124] kfree+0xe8/0x3c8 [ 27.024394] kfree_sensitive+0x3c/0xb0 [ 27.024477] kmalloc_double_kzfree+0x168/0x308 [ 27.024529] kunit_try_run_case+0x170/0x3f0 [ 27.024574] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.025220] kthread+0x328/0x630 [ 27.025404] ret_from_fork+0x10/0x20 [ 27.025692] [ 27.025733] Allocated by task 204: [ 27.025763] kasan_save_stack+0x3c/0x68 [ 27.026200] kasan_save_track+0x20/0x40 [ 27.026291] kasan_save_alloc_info+0x40/0x58 [ 27.026485] __kasan_kmalloc+0xd4/0xd8 [ 27.026582] __kmalloc_cache_noprof+0x16c/0x3c0 [ 27.026928] kmalloc_double_kzfree+0xb8/0x308 [ 27.027091] kunit_try_run_case+0x170/0x3f0 [ 27.027133] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.027179] kthread+0x328/0x630 [ 27.027710] ret_from_fork+0x10/0x20 [ 27.027798] [ 27.028154] Freed by task 204: [ 27.028240] kasan_save_stack+0x3c/0x68 [ 27.028520] kasan_save_track+0x20/0x40 [ 27.028560] kasan_save_free_info+0x4c/0x78 [ 27.029152] __kasan_slab_free+0x6c/0x98 [ 27.029202] kfree+0x214/0x3c8 [ 27.029240] kfree_sensitive+0x80/0xb0 [ 27.029277] kmalloc_double_kzfree+0x11c/0x308 [ 27.029314] kunit_try_run_case+0x170/0x3f0 [ 27.029352] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.029398] kthread+0x328/0x630 [ 27.029912] ret_from_fork+0x10/0x20 [ 27.029955] [ 27.029974] The buggy address belongs to the object at fff00000c16b9ca0 [ 27.029974] which belongs to the cache kmalloc-16 of size 16 [ 27.030723] The buggy address is located 0 bytes inside of [ 27.030723] 16-byte region [fff00000c16b9ca0, fff00000c16b9cb0) [ 27.031289] [ 27.031472] The buggy address belongs to the physical page: [ 27.031632] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xfff00000c16b9ba0 pfn:0x1016b9 [ 27.031852] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.031906] page_type: f5(slab) [ 27.031945] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 27.031995] raw: fff00000c16b9ba0 000000008080007f 00000000f5000000 0000000000000000 [ 27.032036] page dumped because: kasan: bad access detected [ 27.032361] [ 27.032388] Memory state around the buggy address: [ 27.032466] fff00000c16b9b80: fa fb fc fc fa fb fc fc 00 04 fc fc fa fb fc fc [ 27.032567] fff00000c16b9c00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 27.033031] >fff00000c16b9c80: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 27.033281] ^ [ 27.033358] fff00000c16b9d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.033779] fff00000c16b9d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.034095] ==================================================================
[ 22.480969] ================================================================== [ 22.481277] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 22.481688] Free of addr ffff88810278b700 by task kunit_try_catch/221 [ 22.482379] [ 22.482473] CPU: 1 UID: 0 PID: 221 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250626 #1 PREEMPT(voluntary) [ 22.482544] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.482558] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.482594] Call Trace: [ 22.482615] <TASK> [ 22.482635] dump_stack_lvl+0x73/0xb0 [ 22.482664] print_report+0xd1/0x650 [ 22.482686] ? __virt_addr_valid+0x1db/0x2d0 [ 22.482710] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.482735] ? kfree_sensitive+0x2e/0x90 [ 22.482758] kasan_report_invalid_free+0x10a/0x130 [ 22.482781] ? kfree_sensitive+0x2e/0x90 [ 22.482805] ? kfree_sensitive+0x2e/0x90 [ 22.482828] check_slab_allocation+0x101/0x130 [ 22.482879] __kasan_slab_pre_free+0x28/0x40 [ 22.482899] kfree+0xf0/0x3f0 [ 22.482921] ? kfree_sensitive+0x2e/0x90 [ 22.482957] kfree_sensitive+0x2e/0x90 [ 22.482979] kmalloc_double_kzfree+0x19c/0x350 [ 22.483003] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 22.483032] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 22.483080] ? __pfx_read_tsc+0x10/0x10 [ 22.483101] ? ktime_get_ts64+0x86/0x230 [ 22.483125] kunit_try_run_case+0x1a5/0x480 [ 22.483156] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.483178] ? _raw_spin_lock_irqsave+0xf9/0x100 [ 22.483201] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.483234] ? __kthread_parkme+0x82/0x180 [ 22.483413] ? preempt_count_sub+0x50/0x80 [ 22.483436] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.483459] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.483482] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.483504] kthread+0x337/0x6f0 [ 22.483524] ? trace_preempt_on+0x20/0xc0 [ 22.483546] ? __pfx_kthread+0x10/0x10 [ 22.483565] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.483588] ? calculate_sigpending+0x7b/0xa0 [ 22.483618] ? __pfx_kthread+0x10/0x10 [ 22.483639] ret_from_fork+0x116/0x1d0 [ 22.483657] ? __pfx_kthread+0x10/0x10 [ 22.483676] ret_from_fork_asm+0x1a/0x30 [ 22.483707] </TASK> [ 22.483718] [ 22.495697] Allocated by task 221: [ 22.496113] kasan_save_stack+0x45/0x70 [ 22.496427] kasan_save_track+0x18/0x40 [ 22.496706] kasan_save_alloc_info+0x3b/0x50 [ 22.497174] __kasan_kmalloc+0xb7/0xc0 [ 22.497626] __kmalloc_cache_noprof+0x189/0x420 [ 22.497820] kmalloc_double_kzfree+0xa9/0x350 [ 22.498396] kunit_try_run_case+0x1a5/0x480 [ 22.498708] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.499144] kthread+0x337/0x6f0 [ 22.499384] ret_from_fork+0x116/0x1d0 [ 22.499566] ret_from_fork_asm+0x1a/0x30 [ 22.499929] [ 22.500141] Freed by task 221: [ 22.500284] kasan_save_stack+0x45/0x70 [ 22.500484] kasan_save_track+0x18/0x40 [ 22.500900] kasan_save_free_info+0x3f/0x60 [ 22.501246] __kasan_slab_free+0x56/0x70 [ 22.501433] kfree+0x222/0x3f0 [ 22.501591] kfree_sensitive+0x67/0x90 [ 22.501760] kmalloc_double_kzfree+0x12b/0x350 [ 22.502341] kunit_try_run_case+0x1a5/0x480 [ 22.502587] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.502853] kthread+0x337/0x6f0 [ 22.502973] ret_from_fork+0x116/0x1d0 [ 22.503244] ret_from_fork_asm+0x1a/0x30 [ 22.503432] [ 22.503511] The buggy address belongs to the object at ffff88810278b700 [ 22.503511] which belongs to the cache kmalloc-16 of size 16 [ 22.503975] The buggy address is located 0 bytes inside of [ 22.503975] 16-byte region [ffff88810278b700, ffff88810278b710) [ 22.504469] [ 22.504779] The buggy address belongs to the physical page: [ 22.505402] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10278b [ 22.505765] flags: 0x200000000000000(node=0|zone=2) [ 22.506250] page_type: f5(slab) [ 22.506556] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122 [ 22.507156] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 22.507449] page dumped because: kasan: bad access detected [ 22.507879] [ 22.508106] Memory state around the buggy address: [ 22.508289] ffff88810278b600: fa fb fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 22.508664] ffff88810278b680: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 22.509165] >ffff88810278b700: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.509596] ^ [ 22.509715] ffff88810278b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.510290] ffff88810278b800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.510684] ==================================================================