Date
May 12, 2025, 11:48 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.851408] ================================================================== [ 16.851535] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x154/0x2e0 [ 16.851656] Read of size 64 at addr fff00000c78cbb84 by task kunit_try_catch/182 [ 16.851758] [ 16.851822] CPU: 1 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT [ 16.852046] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.852119] Hardware name: linux,dummy-virt (DT) [ 16.852195] Call trace: [ 16.852248] show_stack+0x20/0x38 (C) [ 16.852345] dump_stack_lvl+0x8c/0xd0 [ 16.852453] print_report+0x118/0x608 [ 16.852552] kasan_report+0xdc/0x128 [ 16.852646] kasan_check_range+0x100/0x1a8 [ 16.852747] __asan_memmove+0x3c/0x98 [ 16.852843] kmalloc_memmove_invalid_size+0x154/0x2e0 [ 16.852950] kunit_try_run_case+0x170/0x3f0 [ 16.853060] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.853178] kthread+0x328/0x630 [ 16.853278] ret_from_fork+0x10/0x20 [ 16.853377] [ 16.853419] Allocated by task 182: [ 16.853476] kasan_save_stack+0x3c/0x68 [ 16.853558] kasan_save_track+0x20/0x40 [ 16.853633] kasan_save_alloc_info+0x40/0x58 [ 16.853717] __kasan_kmalloc+0xd4/0xd8 [ 16.853792] __kmalloc_cache_noprof+0x15c/0x3c0 [ 16.853880] kmalloc_memmove_invalid_size+0xb0/0x2e0 [ 16.855979] kunit_try_run_case+0x170/0x3f0 [ 16.856092] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.856767] kthread+0x328/0x630 [ 16.856950] ret_from_fork+0x10/0x20 [ 16.857455] [ 16.857540] The buggy address belongs to the object at fff00000c78cbb80 [ 16.857540] which belongs to the cache kmalloc-64 of size 64 [ 16.857797] The buggy address is located 4 bytes inside of [ 16.857797] allocated 64-byte region [fff00000c78cbb80, fff00000c78cbbc0) [ 16.858077] [ 16.858127] The buggy address belongs to the physical page: [ 16.858183] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078cb [ 16.858278] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.858953] page_type: f5(slab) [ 16.859222] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 16.859340] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.859431] page dumped because: kasan: bad access detected [ 16.860027] [ 16.860090] Memory state around the buggy address: [ 16.860234] fff00000c78cba80: 00 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc [ 16.860534] fff00000c78cbb00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.860960] >fff00000c78cbb80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 16.861058] ^ [ 16.861130] fff00000c78cbc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.861226] fff00000c78cbc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.861310] ==================================================================
[ 16.873619] ================================================================== [ 16.874239] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x16f/0x330 [ 16.874695] Read of size 64 at addr ffff888102b4c904 by task kunit_try_catch/199 [ 16.875048] [ 16.875204] CPU: 1 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) [ 16.875516] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.875548] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 16.875593] Call Trace: [ 16.875620] <TASK> [ 16.875686] dump_stack_lvl+0x73/0xb0 [ 16.875757] print_report+0xd1/0x650 [ 16.875807] ? __virt_addr_valid+0x1db/0x2d0 [ 16.875857] ? kmalloc_memmove_invalid_size+0x16f/0x330 [ 16.875906] ? kasan_complete_mode_report_info+0x2a/0x200 [ 16.875952] ? kmalloc_memmove_invalid_size+0x16f/0x330 [ 16.876003] kasan_report+0x141/0x180 [ 16.876171] ? kmalloc_memmove_invalid_size+0x16f/0x330 [ 16.876231] kasan_check_range+0x10c/0x1c0 [ 16.876281] __asan_memmove+0x27/0x70 [ 16.876306] kmalloc_memmove_invalid_size+0x16f/0x330 [ 16.876331] ? __pfx_kmalloc_memmove_invalid_size+0x10/0x10 [ 16.876360] ? __pfx_kmalloc_memmove_invalid_size+0x10/0x10 [ 16.876389] kunit_try_run_case+0x1a5/0x480 [ 16.876416] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.876439] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 16.876464] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 16.876487] ? __kthread_parkme+0x82/0x180 [ 16.876508] ? preempt_count_sub+0x50/0x80 [ 16.876533] ? __pfx_kunit_try_run_case+0x10/0x10 [ 16.876558] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.876582] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 16.876606] kthread+0x337/0x6f0 [ 16.876626] ? trace_preempt_on+0x20/0xc0 [ 16.876652] ? __pfx_kthread+0x10/0x10 [ 16.876718] ? _raw_spin_unlock_irq+0x47/0x80 [ 16.876741] ? calculate_sigpending+0x7b/0xa0 [ 16.876766] ? __pfx_kthread+0x10/0x10 [ 16.876788] ret_from_fork+0x116/0x1d0 [ 16.876808] ? __pfx_kthread+0x10/0x10 [ 16.876829] ret_from_fork_asm+0x1a/0x30 [ 16.876860] </TASK> [ 16.876875] [ 16.889108] Allocated by task 199: [ 16.889323] kasan_save_stack+0x45/0x70 [ 16.889584] kasan_save_track+0x18/0x40 [ 16.890267] kasan_save_alloc_info+0x3b/0x50 [ 16.890635] __kasan_kmalloc+0xb7/0xc0 [ 16.891027] __kmalloc_cache_noprof+0x189/0x420 [ 16.891576] kmalloc_memmove_invalid_size+0xac/0x330 [ 16.891991] kunit_try_run_case+0x1a5/0x480 [ 16.892416] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 16.892888] kthread+0x337/0x6f0 [ 16.893364] ret_from_fork+0x116/0x1d0 [ 16.893703] ret_from_fork_asm+0x1a/0x30 [ 16.894166] [ 16.894356] The buggy address belongs to the object at ffff888102b4c900 [ 16.894356] which belongs to the cache kmalloc-64 of size 64 [ 16.895384] The buggy address is located 4 bytes inside of [ 16.895384] allocated 64-byte region [ffff888102b4c900, ffff888102b4c940) [ 16.896367] [ 16.896533] The buggy address belongs to the physical page: [ 16.897013] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b4c [ 16.897823] flags: 0x200000000000000(node=0|zone=2) [ 16.898343] page_type: f5(slab) [ 16.898576] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 16.899030] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.899511] page dumped because: kasan: bad access detected [ 16.899831] [ 16.899970] Memory state around the buggy address: [ 16.900228] ffff888102b4c800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.900688] ffff888102b4c880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.901094] >ffff888102b4c900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 16.901843] ^ [ 16.902310] ffff888102b4c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.902589] ffff888102b4ca00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.903363] ==================================================================