Date
July 3, 2025, 10:10 a.m.
| Environment | |
|---|---|
| dragonboard-845c | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 52.827617] ================================================================== [ 52.851775] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 52.857783] Read of size 1 at addr ffff000085584210 by task kunit_try_catch/368 [ 52.865188] [ 52.866726] CPU: 3 UID: 0 PID: 368 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT [ 52.866758] Tainted: [B]=BAD_PAGE, [N]=TEST [ 52.866767] Hardware name: Thundercomm Dragonboard 845c (DT) [ 52.866779] Call trace: [ 52.866789] show_stack+0x20/0x38 (C) [ 52.866808] dump_stack_lvl+0x8c/0xd0 [ 52.866830] print_report+0x118/0x608 [ 52.866851] kasan_report+0xdc/0x128 [ 52.866870] __asan_report_load1_noabort+0x20/0x30 [ 52.866889] strcmp+0xc0/0xc8 [ 52.866905] kasan_strings+0x340/0xb00 [ 52.866922] kunit_try_run_case+0x170/0x3f0 [ 52.866942] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 52.866965] kthread+0x328/0x630 [ 52.866980] ret_from_fork+0x10/0x20 [ 52.866998] [ 52.935262] Allocated by task 368: [ 52.938730] kasan_save_stack+0x3c/0x68 [ 52.942643] kasan_save_track+0x20/0x40 [ 52.946554] kasan_save_alloc_info+0x40/0x58 [ 52.950894] __kasan_kmalloc+0xd4/0xd8 [ 52.954706] __kmalloc_cache_noprof+0x16c/0x3c0 [ 52.959322] kasan_strings+0xc8/0xb00 [ 52.963048] kunit_try_run_case+0x170/0x3f0 [ 52.967304] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 52.972878] kthread+0x328/0x630 [ 52.976171] ret_from_fork+0x10/0x20 [ 52.979812] [ 52.981344] Freed by task 368: [ 52.984460] kasan_save_stack+0x3c/0x68 [ 52.988372] kasan_save_track+0x20/0x40 [ 52.992284] kasan_save_free_info+0x4c/0x78 [ 52.996539] __kasan_slab_free+0x6c/0x98 [ 53.000537] kfree+0x214/0x3c8 [ 53.003660] kasan_strings+0x24c/0xb00 [ 53.007473] kunit_try_run_case+0x170/0x3f0 [ 53.011727] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 53.017302] kthread+0x328/0x630 [ 53.020596] ret_from_fork+0x10/0x20 [ 53.024236] [ 53.025767] The buggy address belongs to the object at ffff000085584200 [ 53.025767] which belongs to the cache kmalloc-32 of size 32 [ 53.038255] The buggy address is located 16 bytes inside of [ 53.038255] freed 32-byte region [ffff000085584200, ffff000085584220) [ 53.050484] [ 53.052021] The buggy address belongs to the physical page: [ 53.057672] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105584 [ 53.065787] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 53.072414] page_type: f5(slab) [ 53.075623] raw: 0bfffe0000000000 ffff000080002780 dead000000000122 0000000000000000 [ 53.083474] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 53.091320] page dumped because: kasan: bad access detected [ 53.096970] [ 53.098502] Memory state around the buggy address: [ 53.103366] ffff000085584100: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 53.110685] ffff000085584180: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 53.118003] >ffff000085584200: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 53.125319] ^ [ 53.129137] ffff000085584280: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 53.136455] ffff000085584300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 53.143772] ==================================================================
[ 33.296285] ================================================================== [ 33.296694] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 33.296767] Read of size 1 at addr fff00000c5a8ac90 by task kunit_try_catch/291 [ 33.297147] [ 33.297188] CPU: 0 UID: 0 PID: 291 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT [ 33.297358] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.297658] Hardware name: linux,dummy-virt (DT) [ 33.297799] Call trace: [ 33.297887] show_stack+0x20/0x38 (C) [ 33.297988] dump_stack_lvl+0x8c/0xd0 [ 33.298061] print_report+0x118/0x608 [ 33.298299] kasan_report+0xdc/0x128 [ 33.298348] __asan_report_load1_noabort+0x20/0x30 [ 33.298400] strcmp+0xc0/0xc8 [ 33.298444] kasan_strings+0x340/0xb00 [ 33.298489] kunit_try_run_case+0x170/0x3f0 [ 33.298581] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.298705] kthread+0x328/0x630 [ 33.299372] ret_from_fork+0x10/0x20 [ 33.299436] [ 33.299457] Allocated by task 291: [ 33.299504] kasan_save_stack+0x3c/0x68 [ 33.299751] kasan_save_track+0x20/0x40 [ 33.299959] kasan_save_alloc_info+0x40/0x58 [ 33.300003] __kasan_kmalloc+0xd4/0xd8 [ 33.300044] __kmalloc_cache_noprof+0x16c/0x3c0 [ 33.300090] kasan_strings+0xc8/0xb00 [ 33.300129] kunit_try_run_case+0x170/0x3f0 [ 33.300180] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.300231] kthread+0x328/0x630 [ 33.300674] ret_from_fork+0x10/0x20 [ 33.300723] [ 33.300745] Freed by task 291: [ 33.300776] kasan_save_stack+0x3c/0x68 [ 33.300857] kasan_save_track+0x20/0x40 [ 33.301235] kasan_save_free_info+0x4c/0x78 [ 33.301363] __kasan_slab_free+0x6c/0x98 [ 33.301409] kfree+0x214/0x3c8 [ 33.301503] kasan_strings+0x24c/0xb00 [ 33.301542] kunit_try_run_case+0x170/0x3f0 [ 33.301933] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.302091] kthread+0x328/0x630 [ 33.302308] ret_from_fork+0x10/0x20 [ 33.302348] [ 33.302521] The buggy address belongs to the object at fff00000c5a8ac80 [ 33.302521] which belongs to the cache kmalloc-32 of size 32 [ 33.302623] The buggy address is located 16 bytes inside of [ 33.302623] freed 32-byte region [fff00000c5a8ac80, fff00000c5a8aca0) [ 33.302782] [ 33.302872] The buggy address belongs to the physical page: [ 33.302917] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a8a [ 33.303111] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.303172] page_type: f5(slab) [ 33.303297] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.303401] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.303489] page dumped because: kasan: bad access detected [ 33.303600] [ 33.303620] Memory state around the buggy address: [ 33.303731] fff00000c5a8ab80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.303777] fff00000c5a8ac00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.303823] >fff00000c5a8ac80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.303875] ^ [ 33.303909] fff00000c5a8ad00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.303957] fff00000c5a8ad80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.303999] ==================================================================
[ 25.066263] ================================================================== [ 25.067894] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 25.068741] Read of size 1 at addr ffff888105ec6450 by task kunit_try_catch/308 [ 25.069065] [ 25.069150] CPU: 1 UID: 0 PID: 308 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) [ 25.069200] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.069214] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.069236] Call Trace: [ 25.069248] <TASK> [ 25.069265] dump_stack_lvl+0x73/0xb0 [ 25.069294] print_report+0xd1/0x650 [ 25.069319] ? __virt_addr_valid+0x1db/0x2d0 [ 25.069343] ? strcmp+0xb0/0xc0 [ 25.069363] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.069391] ? strcmp+0xb0/0xc0 [ 25.069411] kasan_report+0x141/0x180 [ 25.069433] ? strcmp+0xb0/0xc0 [ 25.069471] __asan_report_load1_noabort+0x18/0x20 [ 25.069496] strcmp+0xb0/0xc0 [ 25.069518] kasan_strings+0x431/0xe80 [ 25.069537] ? trace_hardirqs_on+0x37/0xe0 [ 25.069561] ? __pfx_kasan_strings+0x10/0x10 [ 25.069582] ? finish_task_switch.isra.0+0x153/0x700 [ 25.069605] ? __switch_to+0x47/0xf50 [ 25.069633] ? __schedule+0x10cc/0x2b60 [ 25.069658] ? __pfx_read_tsc+0x10/0x10 [ 25.069680] ? ktime_get_ts64+0x86/0x230 [ 25.069706] kunit_try_run_case+0x1a5/0x480 [ 25.069732] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.069756] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.069778] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.069804] ? __kthread_parkme+0x82/0x180 [ 25.069825] ? preempt_count_sub+0x50/0x80 [ 25.069854] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.069879] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.069903] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.069927] kthread+0x337/0x6f0 [ 25.069947] ? trace_preempt_on+0x20/0xc0 [ 25.069968] ? __pfx_kthread+0x10/0x10 [ 25.069989] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.070012] ? calculate_sigpending+0x7b/0xa0 [ 25.070037] ? __pfx_kthread+0x10/0x10 [ 25.070059] ret_from_fork+0x116/0x1d0 [ 25.070078] ? __pfx_kthread+0x10/0x10 [ 25.070099] ret_from_fork_asm+0x1a/0x30 [ 25.070131] </TASK> [ 25.070143] [ 25.077154] Allocated by task 308: [ 25.077364] kasan_save_stack+0x45/0x70 [ 25.077640] kasan_save_track+0x18/0x40 [ 25.077820] kasan_save_alloc_info+0x3b/0x50 [ 25.078042] __kasan_kmalloc+0xb7/0xc0 [ 25.078268] __kmalloc_cache_noprof+0x189/0x420 [ 25.078489] kasan_strings+0xc0/0xe80 [ 25.078743] kunit_try_run_case+0x1a5/0x480 [ 25.078951] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.079390] kthread+0x337/0x6f0 [ 25.079555] ret_from_fork+0x116/0x1d0 [ 25.079762] ret_from_fork_asm+0x1a/0x30 [ 25.079905] [ 25.079971] Freed by task 308: [ 25.080078] kasan_save_stack+0x45/0x70 [ 25.080210] kasan_save_track+0x18/0x40 [ 25.080337] kasan_save_free_info+0x3f/0x60 [ 25.080523] __kasan_slab_free+0x56/0x70 [ 25.080961] kfree+0x222/0x3f0 [ 25.081125] kasan_strings+0x2aa/0xe80 [ 25.081303] kunit_try_run_case+0x1a5/0x480 [ 25.081703] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.082162] kthread+0x337/0x6f0 [ 25.082286] ret_from_fork+0x116/0x1d0 [ 25.082412] ret_from_fork_asm+0x1a/0x30 [ 25.082555] [ 25.082620] The buggy address belongs to the object at ffff888105ec6440 [ 25.082620] which belongs to the cache kmalloc-32 of size 32 [ 25.083078] The buggy address is located 16 bytes inside of [ 25.083078] freed 32-byte region [ffff888105ec6440, ffff888105ec6460) [ 25.083681] [ 25.083769] The buggy address belongs to the physical page: [ 25.084010] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ec6 [ 25.084484] flags: 0x200000000000000(node=0|zone=2) [ 25.084710] page_type: f5(slab) [ 25.084869] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 25.085226] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 25.085679] page dumped because: kasan: bad access detected [ 25.085861] [ 25.085927] Memory state around the buggy address: [ 25.086190] ffff888105ec6300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.086512] ffff888105ec6380: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 25.086823] >ffff888105ec6400: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.087128] ^ [ 25.087332] ffff888105ec6480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.087834] ffff888105ec6500: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.088129] ==================================================================