Date
July 3, 2025, 10:10 a.m.
| Environment | |
|---|---|
| dragonboard-845c | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 53.455848] ================================================================== [ 53.463159] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 53.469159] Read of size 1 at addr ffff000085584210 by task kunit_try_catch/368 [ 53.476567] [ 53.478093] CPU: 6 UID: 0 PID: 368 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT [ 53.478123] Tainted: [B]=BAD_PAGE, [N]=TEST [ 53.478133] Hardware name: Thundercomm Dragonboard 845c (DT) [ 53.478144] Call trace: [ 53.478152] show_stack+0x20/0x38 (C) [ 53.478170] dump_stack_lvl+0x8c/0xd0 [ 53.478189] print_report+0x118/0x608 [ 53.478211] kasan_report+0xdc/0x128 [ 53.478230] __asan_report_load1_noabort+0x20/0x30 [ 53.478247] strlen+0xa8/0xb0 [ 53.478262] kasan_strings+0x418/0xb00 [ 53.478278] kunit_try_run_case+0x170/0x3f0 [ 53.478296] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 53.478318] kthread+0x328/0x630 [ 53.478332] ret_from_fork+0x10/0x20 [ 53.478350] [ 53.546572] Allocated by task 368: [ 53.550025] kasan_save_stack+0x3c/0x68 [ 53.553932] kasan_save_track+0x20/0x40 [ 53.557838] kasan_save_alloc_info+0x40/0x58 [ 53.562177] __kasan_kmalloc+0xd4/0xd8 [ 53.565994] __kmalloc_cache_noprof+0x16c/0x3c0 [ 53.570594] kasan_strings+0xc8/0xb00 [ 53.574325] kunit_try_run_case+0x170/0x3f0 [ 53.578579] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 53.584140] kthread+0x328/0x630 [ 53.587426] ret_from_fork+0x10/0x20 [ 53.591063] [ 53.592596] Freed by task 368: [ 53.595701] kasan_save_stack+0x3c/0x68 [ 53.599605] kasan_save_track+0x20/0x40 [ 53.603513] kasan_save_free_info+0x4c/0x78 [ 53.607760] __kasan_slab_free+0x6c/0x98 [ 53.611755] kfree+0x214/0x3c8 [ 53.614871] kasan_strings+0x24c/0xb00 [ 53.618687] kunit_try_run_case+0x170/0x3f0 [ 53.622938] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 53.628501] kthread+0x328/0x630 [ 53.631785] ret_from_fork+0x10/0x20 [ 53.635419] [ 53.636942] The buggy address belongs to the object at ffff000085584200 [ 53.636942] which belongs to the cache kmalloc-32 of size 32 [ 53.649424] The buggy address is located 16 bytes inside of [ 53.649424] freed 32-byte region [ffff000085584200, ffff000085584220) [ 53.661649] [ 53.663182] The buggy address belongs to the physical page: [ 53.668824] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105584 [ 53.676926] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 53.683539] page_type: f5(slab) [ 53.686743] raw: 0bfffe0000000000 ffff000080002780 dead000000000122 0000000000000000 [ 53.694583] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 53.702423] page dumped because: kasan: bad access detected [ 53.708065] [ 53.709588] Memory state around the buggy address: [ 53.714444] ffff000085584100: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 53.721762] ffff000085584180: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 53.729072] >ffff000085584200: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 53.736379] ^ [ 53.740190] ffff000085584280: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 53.747498] ffff000085584300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 53.754808] ==================================================================
[ 33.313243] ================================================================== [ 33.313296] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 33.313667] Read of size 1 at addr fff00000c5a8ac90 by task kunit_try_catch/291 [ 33.313964] [ 33.314085] CPU: 0 UID: 0 PID: 291 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT [ 33.314175] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.314204] Hardware name: linux,dummy-virt (DT) [ 33.314238] Call trace: [ 33.314269] show_stack+0x20/0x38 (C) [ 33.314514] dump_stack_lvl+0x8c/0xd0 [ 33.314613] print_report+0x118/0x608 [ 33.314804] kasan_report+0xdc/0x128 [ 33.314864] __asan_report_load1_noabort+0x20/0x30 [ 33.314917] strlen+0xa8/0xb0 [ 33.315471] kasan_strings+0x418/0xb00 [ 33.315612] kunit_try_run_case+0x170/0x3f0 [ 33.315668] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.316033] kthread+0x328/0x630 [ 33.316128] ret_from_fork+0x10/0x20 [ 33.316184] [ 33.316204] Allocated by task 291: [ 33.316287] kasan_save_stack+0x3c/0x68 [ 33.316388] kasan_save_track+0x20/0x40 [ 33.316444] kasan_save_alloc_info+0x40/0x58 [ 33.316485] __kasan_kmalloc+0xd4/0xd8 [ 33.316524] __kmalloc_cache_noprof+0x16c/0x3c0 [ 33.316967] kasan_strings+0xc8/0xb00 [ 33.317031] kunit_try_run_case+0x170/0x3f0 [ 33.317074] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.317121] kthread+0x328/0x630 [ 33.317156] ret_from_fork+0x10/0x20 [ 33.317204] [ 33.317225] Freed by task 291: [ 33.317255] kasan_save_stack+0x3c/0x68 [ 33.317806] kasan_save_track+0x20/0x40 [ 33.317926] kasan_save_free_info+0x4c/0x78 [ 33.317984] __kasan_slab_free+0x6c/0x98 [ 33.318032] kfree+0x214/0x3c8 [ 33.318067] kasan_strings+0x24c/0xb00 [ 33.318107] kunit_try_run_case+0x170/0x3f0 [ 33.318520] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.318683] kthread+0x328/0x630 [ 33.318722] ret_from_fork+0x10/0x20 [ 33.318781] [ 33.318809] The buggy address belongs to the object at fff00000c5a8ac80 [ 33.318809] which belongs to the cache kmalloc-32 of size 32 [ 33.318960] The buggy address is located 16 bytes inside of [ 33.318960] freed 32-byte region [fff00000c5a8ac80, fff00000c5a8aca0) [ 33.319027] [ 33.319055] The buggy address belongs to the physical page: [ 33.319209] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a8a [ 33.319399] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.319483] page_type: f5(slab) [ 33.319526] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.319581] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.319657] page dumped because: kasan: bad access detected [ 33.319711] [ 33.319796] Memory state around the buggy address: [ 33.319841] fff00000c5a8ab80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.319942] fff00000c5a8ac00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.320014] >fff00000c5a8ac80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.320055] ^ [ 33.320147] fff00000c5a8ad00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.320365] fff00000c5a8ad80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.320408] ==================================================================
[ 25.120027] ================================================================== [ 25.120828] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 25.121117] Read of size 1 at addr ffff888105ec6450 by task kunit_try_catch/308 [ 25.121741] [ 25.121864] CPU: 1 UID: 0 PID: 308 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) [ 25.121914] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.122109] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.122135] Call Trace: [ 25.122186] <TASK> [ 25.122215] dump_stack_lvl+0x73/0xb0 [ 25.122244] print_report+0xd1/0x650 [ 25.122267] ? __virt_addr_valid+0x1db/0x2d0 [ 25.122290] ? strlen+0x8f/0xb0 [ 25.122309] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.122335] ? strlen+0x8f/0xb0 [ 25.122355] kasan_report+0x141/0x180 [ 25.122377] ? strlen+0x8f/0xb0 [ 25.122401] __asan_report_load1_noabort+0x18/0x20 [ 25.122425] strlen+0x8f/0xb0 [ 25.122446] kasan_strings+0x57b/0xe80 [ 25.122478] ? trace_hardirqs_on+0x37/0xe0 [ 25.122500] ? __pfx_kasan_strings+0x10/0x10 [ 25.122520] ? finish_task_switch.isra.0+0x153/0x700 [ 25.122542] ? __switch_to+0x47/0xf50 [ 25.122567] ? __schedule+0x10cc/0x2b60 [ 25.122591] ? __pfx_read_tsc+0x10/0x10 [ 25.122613] ? ktime_get_ts64+0x86/0x230 [ 25.122637] kunit_try_run_case+0x1a5/0x480 [ 25.122660] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.122683] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.122704] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.122729] ? __kthread_parkme+0x82/0x180 [ 25.122749] ? preempt_count_sub+0x50/0x80 [ 25.122771] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.122796] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.122820] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.122844] kthread+0x337/0x6f0 [ 25.122863] ? trace_preempt_on+0x20/0xc0 [ 25.122886] ? __pfx_kthread+0x10/0x10 [ 25.122907] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.122929] ? calculate_sigpending+0x7b/0xa0 [ 25.122954] ? __pfx_kthread+0x10/0x10 [ 25.122975] ret_from_fork+0x116/0x1d0 [ 25.122995] ? __pfx_kthread+0x10/0x10 [ 25.123015] ret_from_fork_asm+0x1a/0x30 [ 25.123047] </TASK> [ 25.123057] [ 25.134579] Allocated by task 308: [ 25.134780] kasan_save_stack+0x45/0x70 [ 25.135062] kasan_save_track+0x18/0x40 [ 25.135686] kasan_save_alloc_info+0x3b/0x50 [ 25.135890] __kasan_kmalloc+0xb7/0xc0 [ 25.136141] __kmalloc_cache_noprof+0x189/0x420 [ 25.136438] kasan_strings+0xc0/0xe80 [ 25.136933] kunit_try_run_case+0x1a5/0x480 [ 25.137282] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.137699] kthread+0x337/0x6f0 [ 25.137953] ret_from_fork+0x116/0x1d0 [ 25.138143] ret_from_fork_asm+0x1a/0x30 [ 25.138600] [ 25.138675] Freed by task 308: [ 25.138983] kasan_save_stack+0x45/0x70 [ 25.139401] kasan_save_track+0x18/0x40 [ 25.139605] kasan_save_free_info+0x3f/0x60 [ 25.139874] __kasan_slab_free+0x56/0x70 [ 25.140073] kfree+0x222/0x3f0 [ 25.140204] kasan_strings+0x2aa/0xe80 [ 25.140947] kunit_try_run_case+0x1a5/0x480 [ 25.141142] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.141667] kthread+0x337/0x6f0 [ 25.141935] ret_from_fork+0x116/0x1d0 [ 25.142253] ret_from_fork_asm+0x1a/0x30 [ 25.142622] [ 25.142726] The buggy address belongs to the object at ffff888105ec6440 [ 25.142726] which belongs to the cache kmalloc-32 of size 32 [ 25.143678] The buggy address is located 16 bytes inside of [ 25.143678] freed 32-byte region [ffff888105ec6440, ffff888105ec6460) [ 25.144316] [ 25.144502] The buggy address belongs to the physical page: [ 25.144947] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ec6 [ 25.145628] flags: 0x200000000000000(node=0|zone=2) [ 25.145940] page_type: f5(slab) [ 25.146085] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 25.146681] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 25.147064] page dumped because: kasan: bad access detected [ 25.147535] [ 25.147706] Memory state around the buggy address: [ 25.148087] ffff888105ec6300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.148714] ffff888105ec6380: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 25.149411] >ffff888105ec6400: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.149638] ^ [ 25.149809] ffff888105ec6480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.150018] ffff888105ec6500: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.150231] ==================================================================