Date
June 17, 2025, 3:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.877246] ================================================================== [ 21.878379] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 21.878914] Read of size 18446744073709551614 at addr fff00000c7950c84 by task kunit_try_catch/182 [ 21.879625] [ 21.879748] CPU: 0 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 21.879951] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.880017] Hardware name: linux,dummy-virt (DT) [ 21.880507] Call trace: [ 21.880581] show_stack+0x20/0x38 (C) [ 21.880954] dump_stack_lvl+0x8c/0xd0 [ 21.881425] print_report+0x118/0x608 [ 21.881671] kasan_report+0xdc/0x128 [ 21.881917] kasan_check_range+0x100/0x1a8 [ 21.882029] __asan_memmove+0x3c/0x98 [ 21.882120] kmalloc_memmove_negative_size+0x154/0x2e0 [ 21.882216] kunit_try_run_case+0x170/0x3f0 [ 21.882324] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.882449] kthread+0x328/0x630 [ 21.882559] ret_from_fork+0x10/0x20 [ 21.882674] [ 21.883461] Allocated by task 182: [ 21.883771] kasan_save_stack+0x3c/0x68 [ 21.883928] kasan_save_track+0x20/0x40 [ 21.884480] kasan_save_alloc_info+0x40/0x58 [ 21.884591] __kasan_kmalloc+0xd4/0xd8 [ 21.885047] __kmalloc_cache_noprof+0x16c/0x3c0 [ 21.885159] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 21.885320] kunit_try_run_case+0x170/0x3f0 [ 21.885422] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.885596] kthread+0x328/0x630 [ 21.885893] ret_from_fork+0x10/0x20 [ 21.886251] [ 21.886320] The buggy address belongs to the object at fff00000c7950c80 [ 21.886320] which belongs to the cache kmalloc-64 of size 64 [ 21.886492] The buggy address is located 4 bytes inside of [ 21.886492] 64-byte region [fff00000c7950c80, fff00000c7950cc0) [ 21.886825] [ 21.887047] The buggy address belongs to the physical page: [ 21.887183] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107950 [ 21.887332] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.887491] page_type: f5(slab) [ 21.887585] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 21.888052] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 21.888164] page dumped because: kasan: bad access detected [ 21.888651] [ 21.888709] Memory state around the buggy address: [ 21.888833] fff00000c7950b80: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 21.888943] fff00000c7950c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.889087] >fff00000c7950c80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 21.889183] ^ [ 21.889445] fff00000c7950d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.889556] fff00000c7950d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.889650] ==================================================================
[ 19.503780] ================================================================== [ 19.504616] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 19.506224] Read of size 18446744073709551614 at addr ffff888102eda404 by task kunit_try_catch/200 [ 19.506937] [ 19.507558] CPU: 1 UID: 0 PID: 200 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 19.507635] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.507654] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.507685] Call Trace: [ 19.507710] <TASK> [ 19.507735] dump_stack_lvl+0x73/0xb0 [ 19.507779] print_report+0xd1/0x650 [ 19.507815] ? __virt_addr_valid+0x1db/0x2d0 [ 19.507850] ? kmalloc_memmove_negative_size+0x171/0x330 [ 19.507897] ? kasan_complete_mode_report_info+0x2a/0x200 [ 19.507934] ? kmalloc_memmove_negative_size+0x171/0x330 [ 19.508004] kasan_report+0x141/0x180 [ 19.508084] ? kmalloc_memmove_negative_size+0x171/0x330 [ 19.508137] kasan_check_range+0x10c/0x1c0 [ 19.508170] __asan_memmove+0x27/0x70 [ 19.508204] kmalloc_memmove_negative_size+0x171/0x330 [ 19.508246] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 19.508323] ? __schedule+0x10cc/0x2b60 [ 19.508368] ? __pfx_read_tsc+0x10/0x10 [ 19.508402] ? ktime_get_ts64+0x86/0x230 [ 19.508443] kunit_try_run_case+0x1a5/0x480 [ 19.508485] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.508520] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.508558] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.508595] ? __kthread_parkme+0x82/0x180 [ 19.508629] ? preempt_count_sub+0x50/0x80 [ 19.508668] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.508706] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.508740] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.508777] kthread+0x337/0x6f0 [ 19.508802] ? trace_preempt_on+0x20/0xc0 [ 19.508841] ? __pfx_kthread+0x10/0x10 [ 19.508869] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.508902] ? calculate_sigpending+0x7b/0xa0 [ 19.508937] ? __pfx_kthread+0x10/0x10 [ 19.508964] ret_from_fork+0x41/0x80 [ 19.508997] ? __pfx_kthread+0x10/0x10 [ 19.509025] ret_from_fork_asm+0x1a/0x30 [ 19.509100] </TASK> [ 19.509118] [ 19.525695] Allocated by task 200: [ 19.526208] kasan_save_stack+0x45/0x70 [ 19.526647] kasan_save_track+0x18/0x40 [ 19.527142] kasan_save_alloc_info+0x3b/0x50 [ 19.527627] __kasan_kmalloc+0xb7/0xc0 [ 19.528132] __kmalloc_cache_noprof+0x189/0x420 [ 19.528645] kmalloc_memmove_negative_size+0xac/0x330 [ 19.529161] kunit_try_run_case+0x1a5/0x480 [ 19.529641] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.530257] kthread+0x337/0x6f0 [ 19.530659] ret_from_fork+0x41/0x80 [ 19.531160] ret_from_fork_asm+0x1a/0x30 [ 19.531593] [ 19.531844] The buggy address belongs to the object at ffff888102eda400 [ 19.531844] which belongs to the cache kmalloc-64 of size 64 [ 19.533023] The buggy address is located 4 bytes inside of [ 19.533023] 64-byte region [ffff888102eda400, ffff888102eda440) [ 19.534081] [ 19.534354] The buggy address belongs to the physical page: [ 19.534822] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102eda [ 19.535386] flags: 0x200000000000000(node=0|zone=2) [ 19.535872] page_type: f5(slab) [ 19.536387] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 19.537164] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.537841] page dumped because: kasan: bad access detected [ 19.538429] [ 19.538658] Memory state around the buggy address: [ 19.539203] ffff888102eda300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.539724] ffff888102eda380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.540285] >ffff888102eda400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 19.540857] ^ [ 19.541242] ffff888102eda480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.541825] ffff888102eda500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.542501] ==================================================================