Date
July 15, 2025, 11:35 a.m.
| Environment | |
|---|---|
| e850-96 | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 57.216899] ================================================================== [ 57.240543] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 57.246440] Read of size 1 at addr ffff0008085305d0 by task kunit_try_catch/340 [ 57.253731] [ 57.255218] CPU: 0 UID: 0 PID: 340 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250715 #1 PREEMPT [ 57.255274] Tainted: [B]=BAD_PAGE, [N]=TEST [ 57.255293] Hardware name: WinLink E850-96 board (DT) [ 57.255316] Call trace: [ 57.255332] show_stack+0x20/0x38 (C) [ 57.255369] dump_stack_lvl+0x8c/0xd0 [ 57.255406] print_report+0x118/0x5d0 [ 57.255437] kasan_report+0xdc/0x128 [ 57.255465] __asan_report_load1_noabort+0x20/0x30 [ 57.255501] strcmp+0xc0/0xc8 [ 57.255526] kasan_strings+0x340/0xb00 [ 57.255559] kunit_try_run_case+0x170/0x3f0 [ 57.255591] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 57.255628] kthread+0x328/0x630 [ 57.255654] ret_from_fork+0x10/0x20 [ 57.255690] [ 57.321788] Allocated by task 340: [ 57.325175] kasan_save_stack+0x3c/0x68 [ 57.328990] kasan_save_track+0x20/0x40 [ 57.332811] kasan_save_alloc_info+0x40/0x58 [ 57.337063] __kasan_kmalloc+0xd4/0xd8 [ 57.340796] __kmalloc_cache_noprof+0x16c/0x3c0 [ 57.345309] kasan_strings+0xc8/0xb00 [ 57.348955] kunit_try_run_case+0x170/0x3f0 [ 57.353122] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 57.358591] kthread+0x328/0x630 [ 57.361802] ret_from_fork+0x10/0x20 [ 57.365361] [ 57.366838] Freed by task 340: [ 57.369876] kasan_save_stack+0x3c/0x68 [ 57.373694] kasan_save_track+0x20/0x40 [ 57.377514] kasan_save_free_info+0x4c/0x78 [ 57.381680] __kasan_slab_free+0x6c/0x98 [ 57.385587] kfree+0x214/0x3c8 [ 57.388625] kasan_strings+0x24c/0xb00 [ 57.392357] kunit_try_run_case+0x170/0x3f0 [ 57.396524] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 57.401994] kthread+0x328/0x630 [ 57.405204] ret_from_fork+0x10/0x20 [ 57.408763] [ 57.410240] The buggy address belongs to the object at ffff0008085305c0 [ 57.410240] which belongs to the cache kmalloc-32 of size 32 [ 57.422567] The buggy address is located 16 bytes inside of [ 57.422567] freed 32-byte region [ffff0008085305c0, ffff0008085305e0) [ 57.434631] [ 57.436110] The buggy address belongs to the physical page: [ 57.441666] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x888530 [ 57.449651] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 57.456160] page_type: f5(slab) [ 57.459294] raw: 0bfffe0000000000 ffff000800002780 dead000000000122 0000000000000000 [ 57.467016] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 57.474737] page dumped because: kasan: bad access detected [ 57.480290] [ 57.481765] Memory state around the buggy address: [ 57.486545] ffff000808530480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.493748] ffff000808530500: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.500953] >ffff000808530580: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.508154] ^ [ 57.513974] ffff000808530600: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.521178] ffff000808530680: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 57.528379] ==================================================================
[ 32.937572] ================================================================== [ 32.938213] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 32.938560] Read of size 1 at addr fff00000c64fae50 by task kunit_try_catch/291 [ 32.938723] [ 32.938857] CPU: 1 UID: 0 PID: 291 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250715 #1 PREEMPT [ 32.938968] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.939022] Hardware name: linux,dummy-virt (DT) [ 32.939148] Call trace: [ 32.939195] show_stack+0x20/0x38 (C) [ 32.939408] dump_stack_lvl+0x8c/0xd0 [ 32.939651] print_report+0x118/0x5d0 [ 32.939731] kasan_report+0xdc/0x128 [ 32.939913] __asan_report_load1_noabort+0x20/0x30 [ 32.940101] strcmp+0xc0/0xc8 [ 32.940334] kasan_strings+0x340/0xb00 [ 32.940553] kunit_try_run_case+0x170/0x3f0 [ 32.940710] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.940816] kthread+0x328/0x630 [ 32.940893] ret_from_fork+0x10/0x20 [ 32.941058] [ 32.941128] Allocated by task 291: [ 32.941232] kasan_save_stack+0x3c/0x68 [ 32.941331] kasan_save_track+0x20/0x40 [ 32.941549] kasan_save_alloc_info+0x40/0x58 [ 32.941633] __kasan_kmalloc+0xd4/0xd8 [ 32.941802] __kmalloc_cache_noprof+0x16c/0x3c0 [ 32.941940] kasan_strings+0xc8/0xb00 [ 32.942046] kunit_try_run_case+0x170/0x3f0 [ 32.942226] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.942275] kthread+0x328/0x630 [ 32.942311] ret_from_fork+0x10/0x20 [ 32.942355] [ 32.942537] Freed by task 291: [ 32.942737] kasan_save_stack+0x3c/0x68 [ 32.942829] kasan_save_track+0x20/0x40 [ 32.942980] kasan_save_free_info+0x4c/0x78 [ 32.943142] __kasan_slab_free+0x6c/0x98 [ 32.943240] kfree+0x214/0x3c8 [ 32.943335] kasan_strings+0x24c/0xb00 [ 32.943517] kunit_try_run_case+0x170/0x3f0 [ 32.943702] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.943922] kthread+0x328/0x630 [ 32.944051] ret_from_fork+0x10/0x20 [ 32.944329] [ 32.944384] The buggy address belongs to the object at fff00000c64fae40 [ 32.944384] which belongs to the cache kmalloc-32 of size 32 [ 32.944732] The buggy address is located 16 bytes inside of [ 32.944732] freed 32-byte region [fff00000c64fae40, fff00000c64fae60) [ 32.944979] [ 32.945014] The buggy address belongs to the physical page: [ 32.945344] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1064fa [ 32.945633] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.945866] page_type: f5(slab) [ 32.945954] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 32.946006] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 32.946049] page dumped because: kasan: bad access detected [ 32.946084] [ 32.946291] Memory state around the buggy address: [ 32.946659] fff00000c64fad00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 32.946828] fff00000c64fad80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 32.946903] >fff00000c64fae00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 32.947129] ^ [ 32.947315] fff00000c64fae80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 32.947490] fff00000c64faf00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 32.947585] ==================================================================
[ 26.007445] ================================================================== [ 26.008580] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 26.009086] Read of size 1 at addr ffff88810591fe50 by task kunit_try_catch/307 [ 26.009427] [ 26.009564] CPU: 0 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250715 #1 PREEMPT(voluntary) [ 26.009656] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.009672] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.009872] Call Trace: [ 26.009889] <TASK> [ 26.009910] dump_stack_lvl+0x73/0xb0 [ 26.009958] print_report+0xd1/0x610 [ 26.009989] ? __virt_addr_valid+0x1db/0x2d0 [ 26.010020] ? strcmp+0xb0/0xc0 [ 26.010046] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.010078] ? strcmp+0xb0/0xc0 [ 26.010103] kasan_report+0x141/0x180 [ 26.010131] ? strcmp+0xb0/0xc0 [ 26.010163] __asan_report_load1_noabort+0x18/0x20 [ 26.010355] strcmp+0xb0/0xc0 [ 26.010387] kasan_strings+0x431/0xe80 [ 26.010422] ? trace_hardirqs_on+0x37/0xe0 [ 26.010453] ? __pfx_kasan_strings+0x10/0x10 [ 26.010495] ? finish_task_switch.isra.0+0x153/0x700 [ 26.010522] ? __switch_to+0x47/0xf80 [ 26.010566] ? __schedule+0x10cc/0x2b60 [ 26.010661] ? __pfx_read_tsc+0x10/0x10 [ 26.010690] ? ktime_get_ts64+0x86/0x230 [ 26.010721] kunit_try_run_case+0x1a5/0x480 [ 26.010750] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.010776] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.010803] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.010830] ? __kthread_parkme+0x82/0x180 [ 26.010857] ? preempt_count_sub+0x50/0x80 [ 26.010886] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.010913] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.010944] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.010976] kthread+0x337/0x6f0 [ 26.011000] ? trace_preempt_on+0x20/0xc0 [ 26.011028] ? __pfx_kthread+0x10/0x10 [ 26.011053] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.011082] ? calculate_sigpending+0x7b/0xa0 [ 26.011112] ? __pfx_kthread+0x10/0x10 [ 26.011140] ret_from_fork+0x116/0x1d0 [ 26.011163] ? __pfx_kthread+0x10/0x10 [ 26.011189] ret_from_fork_asm+0x1a/0x30 [ 26.011230] </TASK> [ 26.011243] [ 26.020766] Allocated by task 307: [ 26.020937] kasan_save_stack+0x45/0x70 [ 26.021179] kasan_save_track+0x18/0x40 [ 26.021399] kasan_save_alloc_info+0x3b/0x50 [ 26.021602] __kasan_kmalloc+0xb7/0xc0 [ 26.021829] __kmalloc_cache_noprof+0x189/0x420 [ 26.022066] kasan_strings+0xc0/0xe80 [ 26.022255] kunit_try_run_case+0x1a5/0x480 [ 26.022458] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.022805] kthread+0x337/0x6f0 [ 26.022933] ret_from_fork+0x116/0x1d0 [ 26.023069] ret_from_fork_asm+0x1a/0x30 [ 26.023209] [ 26.023296] Freed by task 307: [ 26.023449] kasan_save_stack+0x45/0x70 [ 26.023668] kasan_save_track+0x18/0x40 [ 26.023861] kasan_save_free_info+0x3f/0x60 [ 26.024067] __kasan_slab_free+0x56/0x70 [ 26.024437] kfree+0x222/0x3f0 [ 26.024693] kasan_strings+0x2aa/0xe80 [ 26.024854] kunit_try_run_case+0x1a5/0x480 [ 26.025100] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.025343] kthread+0x337/0x6f0 [ 26.025467] ret_from_fork+0x116/0x1d0 [ 26.025615] ret_from_fork_asm+0x1a/0x30 [ 26.025799] [ 26.025906] The buggy address belongs to the object at ffff88810591fe40 [ 26.025906] which belongs to the cache kmalloc-32 of size 32 [ 26.026537] The buggy address is located 16 bytes inside of [ 26.026537] freed 32-byte region [ffff88810591fe40, ffff88810591fe60) [ 26.027104] [ 26.027191] The buggy address belongs to the physical page: [ 26.027447] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10591f [ 26.027855] flags: 0x200000000000000(node=0|zone=2) [ 26.028088] page_type: f5(slab) [ 26.028238] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.028555] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 26.029006] page dumped because: kasan: bad access detected [ 26.029189] [ 26.029257] Memory state around the buggy address: [ 26.029411] ffff88810591fd00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.029768] ffff88810591fd80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 26.030083] >ffff88810591fe00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.030590] ^ [ 26.030999] ffff88810591fe80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.031216] ffff88810591ff00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 26.031429] ==================================================================