Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.706124] ================================================================== [ 22.706399] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 22.706598] Read of size 18446744073709551614 at addr fff00000c76c4204 by task kunit_try_catch/184 [ 22.706796] [ 22.706892] CPU: 1 UID: 0 PID: 184 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT [ 22.707109] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.707179] Hardware name: linux,dummy-virt (DT) [ 22.707259] Call trace: [ 22.707321] show_stack+0x20/0x38 (C) [ 22.708929] dump_stack_lvl+0x8c/0xd0 [ 22.709472] print_report+0x118/0x608 [ 22.709577] kasan_report+0xdc/0x128 [ 22.709677] kasan_check_range+0x100/0x1a8 [ 22.709866] __asan_memmove+0x3c/0x98 [ 22.710002] kmalloc_memmove_negative_size+0x154/0x2e0 [ 22.710142] kunit_try_run_case+0x170/0x3f0 [ 22.710268] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.710430] kthread+0x328/0x630 [ 22.710552] ret_from_fork+0x10/0x20 [ 22.710683] [ 22.710731] Allocated by task 184: [ 22.711573] kasan_save_stack+0x3c/0x68 [ 22.712694] kasan_save_track+0x20/0x40 [ 22.712951] kasan_save_alloc_info+0x40/0x58 [ 22.713098] __kasan_kmalloc+0xd4/0xd8 [ 22.714083] __kmalloc_cache_noprof+0x16c/0x3c0 [ 22.714326] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 22.714549] kunit_try_run_case+0x170/0x3f0 [ 22.714646] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.714734] kthread+0x328/0x630 [ 22.714814] ret_from_fork+0x10/0x20 [ 22.714904] [ 22.715668] The buggy address belongs to the object at fff00000c76c4200 [ 22.715668] which belongs to the cache kmalloc-64 of size 64 [ 22.716098] The buggy address is located 4 bytes inside of [ 22.716098] 64-byte region [fff00000c76c4200, fff00000c76c4240) [ 22.716563] [ 22.716929] The buggy address belongs to the physical page: [ 22.717301] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1076c4 [ 22.717792] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.717933] page_type: f5(slab) [ 22.718039] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 22.718171] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 22.719168] page dumped because: kasan: bad access detected [ 22.719350] [ 22.719467] Memory state around the buggy address: [ 22.719613] fff00000c76c4100: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 22.719732] fff00000c76c4180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 22.719847] >fff00000c76c4200: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 22.719948] ^ [ 22.720022] fff00000c76c4280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.720132] fff00000c76c4300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.720235] ==================================================================
[ 13.921249] ================================================================== [ 13.921735] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 13.922482] Read of size 18446744073709551614 at addr ffff888102d9ae04 by task kunit_try_catch/200 [ 13.923811] [ 13.924059] CPU: 1 UID: 0 PID: 200 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT(voluntary) [ 13.924159] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.924206] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.924245] Call Trace: [ 13.924273] <TASK> [ 13.924305] dump_stack_lvl+0x73/0xb0 [ 13.924365] print_report+0xd1/0x650 [ 13.924392] ? __virt_addr_valid+0x1db/0x2d0 [ 13.924415] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.924438] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.924458] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.924519] kasan_report+0x141/0x180 [ 13.924571] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.924619] kasan_check_range+0x10c/0x1c0 [ 13.924764] __asan_memmove+0x27/0x70 [ 13.924786] kmalloc_memmove_negative_size+0x171/0x330 [ 13.924809] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 13.924832] ? __schedule+0x10cc/0x2b30 [ 13.924853] ? __pfx_read_tsc+0x10/0x10 [ 13.924873] ? ktime_get_ts64+0x86/0x230 [ 13.924897] kunit_try_run_case+0x1a5/0x480 [ 13.924921] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.924942] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.924964] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.924984] ? __kthread_parkme+0x82/0x180 [ 13.925005] ? preempt_count_sub+0x50/0x80 [ 13.925029] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.925051] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.925072] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.925092] kthread+0x337/0x6f0 [ 13.925108] ? trace_preempt_on+0x20/0xc0 [ 13.925130] ? __pfx_kthread+0x10/0x10 [ 13.925147] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.925166] ? calculate_sigpending+0x7b/0xa0 [ 13.925186] ? __pfx_kthread+0x10/0x10 [ 13.925203] ret_from_fork+0x41/0x80 [ 13.925222] ? __pfx_kthread+0x10/0x10 [ 13.925239] ret_from_fork_asm+0x1a/0x30 [ 13.925267] </TASK> [ 13.925279] [ 13.938308] Allocated by task 200: [ 13.938490] kasan_save_stack+0x45/0x70 [ 13.939509] kasan_save_track+0x18/0x40 [ 13.940532] kasan_save_alloc_info+0x3b/0x50 [ 13.940978] __kasan_kmalloc+0xb7/0xc0 [ 13.941132] __kmalloc_cache_noprof+0x189/0x420 [ 13.941368] kmalloc_memmove_negative_size+0xac/0x330 [ 13.941749] kunit_try_run_case+0x1a5/0x480 [ 13.942020] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.942474] kthread+0x337/0x6f0 [ 13.942844] ret_from_fork+0x41/0x80 [ 13.943161] ret_from_fork_asm+0x1a/0x30 [ 13.943495] [ 13.943659] The buggy address belongs to the object at ffff888102d9ae00 [ 13.943659] which belongs to the cache kmalloc-64 of size 64 [ 13.944345] The buggy address is located 4 bytes inside of [ 13.944345] 64-byte region [ffff888102d9ae00, ffff888102d9ae40) [ 13.945214] [ 13.945387] The buggy address belongs to the physical page: [ 13.945838] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102d9a [ 13.946143] flags: 0x200000000000000(node=0|zone=2) [ 13.946518] page_type: f5(slab) [ 13.947021] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 13.947755] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 13.948270] page dumped because: kasan: bad access detected [ 13.949138] [ 13.949327] Memory state around the buggy address: [ 13.949791] ffff888102d9ad00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.950206] ffff888102d9ad80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.950521] >ffff888102d9ae00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 13.951146] ^ [ 13.951454] ffff888102d9ae80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.952021] ffff888102d9af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.952403] ==================================================================