Date
July 12, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.779757] ================================================================== [ 16.779851] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.779909] Read of size 18446744073709551614 at addr fff00000c592f404 by task kunit_try_catch/180 [ 16.779989] [ 16.780017] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.780144] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.780212] Hardware name: linux,dummy-virt (DT) [ 16.780243] Call trace: [ 16.780264] show_stack+0x20/0x38 (C) [ 16.780310] dump_stack_lvl+0x8c/0xd0 [ 16.780548] print_report+0x118/0x5d0 [ 16.780616] kasan_report+0xdc/0x128 [ 16.780661] kasan_check_range+0x100/0x1a8 [ 16.780739] __asan_memmove+0x3c/0x98 [ 16.780781] kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.780859] kunit_try_run_case+0x170/0x3f0 [ 16.780905] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.780972] kthread+0x328/0x630 [ 16.781020] ret_from_fork+0x10/0x20 [ 16.781311] [ 16.781363] Allocated by task 180: [ 16.781411] kasan_save_stack+0x3c/0x68 [ 16.781479] kasan_save_track+0x20/0x40 [ 16.781517] kasan_save_alloc_info+0x40/0x58 [ 16.781556] __kasan_kmalloc+0xd4/0xd8 [ 16.781844] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.781929] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 16.782355] kunit_try_run_case+0x170/0x3f0 [ 16.782458] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.782579] kthread+0x328/0x630 [ 16.782626] ret_from_fork+0x10/0x20 [ 16.782683] [ 16.782958] The buggy address belongs to the object at fff00000c592f400 [ 16.782958] which belongs to the cache kmalloc-64 of size 64 [ 16.783030] The buggy address is located 4 bytes inside of [ 16.783030] 64-byte region [fff00000c592f400, fff00000c592f440) [ 16.783092] [ 16.783132] The buggy address belongs to the physical page: [ 16.783164] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10592f [ 16.783262] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.783312] page_type: f5(slab) [ 16.783350] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 16.783632] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.783776] page dumped because: kasan: bad access detected [ 16.784157] [ 16.784247] Memory state around the buggy address: [ 16.784357] fff00000c592f300: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 16.784466] fff00000c592f380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.784548] >fff00000c592f400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 16.784588] ^ [ 16.784616] fff00000c592f480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.784683] fff00000c592f500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.784723] ==================================================================
[ 13.163895] ================================================================== [ 13.164742] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 13.165327] Read of size 18446744073709551614 at addr ffff888103a50004 by task kunit_try_catch/197 [ 13.165696] [ 13.165813] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.165857] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.165868] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.165889] Call Trace: [ 13.165901] <TASK> [ 13.165915] dump_stack_lvl+0x73/0xb0 [ 13.165946] print_report+0xd1/0x610 [ 13.165968] ? __virt_addr_valid+0x1db/0x2d0 [ 13.166228] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.166254] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.166291] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.166339] kasan_report+0x141/0x180 [ 13.166361] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.166392] kasan_check_range+0x10c/0x1c0 [ 13.166415] __asan_memmove+0x27/0x70 [ 13.166434] kmalloc_memmove_negative_size+0x171/0x330 [ 13.166460] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 13.166487] ? __schedule+0x10cc/0x2b60 [ 13.166510] ? __pfx_read_tsc+0x10/0x10 [ 13.166531] ? ktime_get_ts64+0x86/0x230 [ 13.166556] kunit_try_run_case+0x1a5/0x480 [ 13.166581] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.166604] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.166627] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.166651] ? __kthread_parkme+0x82/0x180 [ 13.166671] ? preempt_count_sub+0x50/0x80 [ 13.166695] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.166725] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.166749] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.166774] kthread+0x337/0x6f0 [ 13.166793] ? trace_preempt_on+0x20/0xc0 [ 13.166817] ? __pfx_kthread+0x10/0x10 [ 13.166837] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.166858] ? calculate_sigpending+0x7b/0xa0 [ 13.166882] ? __pfx_kthread+0x10/0x10 [ 13.166903] ret_from_fork+0x116/0x1d0 [ 13.166921] ? __pfx_kthread+0x10/0x10 [ 13.166941] ret_from_fork_asm+0x1a/0x30 [ 13.166971] </TASK> [ 13.167000] [ 13.174186] Allocated by task 197: [ 13.174528] kasan_save_stack+0x45/0x70 [ 13.174720] kasan_save_track+0x18/0x40 [ 13.174886] kasan_save_alloc_info+0x3b/0x50 [ 13.175197] __kasan_kmalloc+0xb7/0xc0 [ 13.175353] __kmalloc_cache_noprof+0x189/0x420 [ 13.175574] kmalloc_memmove_negative_size+0xac/0x330 [ 13.175804] kunit_try_run_case+0x1a5/0x480 [ 13.176045] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.176278] kthread+0x337/0x6f0 [ 13.176434] ret_from_fork+0x116/0x1d0 [ 13.176622] ret_from_fork_asm+0x1a/0x30 [ 13.176806] [ 13.176878] The buggy address belongs to the object at ffff888103a50000 [ 13.176878] which belongs to the cache kmalloc-64 of size 64 [ 13.177479] The buggy address is located 4 bytes inside of [ 13.177479] 64-byte region [ffff888103a50000, ffff888103a50040) [ 13.177958] [ 13.178031] The buggy address belongs to the physical page: [ 13.178204] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a50 [ 13.178804] flags: 0x200000000000000(node=0|zone=2) [ 13.179063] page_type: f5(slab) [ 13.179231] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 13.179556] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 13.179850] page dumped because: kasan: bad access detected [ 13.180042] [ 13.180110] Memory state around the buggy address: [ 13.180273] ffff888103a4ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.180487] ffff888103a4ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.180801] >ffff888103a50000: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 13.181112] ^ [ 13.181454] ffff888103a50080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.181794] ffff888103a50100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.182274] ==================================================================