Date
June 2, 2025, 2:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.928119] ================================================================== [ 18.928805] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.929822] Read of size 18446744073709551614 at addr fff00000c65a7d84 by task kunit_try_catch/170 [ 18.931174] [ 18.931847] CPU: 1 UID: 0 PID: 170 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 18.931997] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.932064] Hardware name: linux,dummy-virt (DT) [ 18.932228] Call trace: [ 18.932306] show_stack+0x20/0x38 (C) [ 18.932411] dump_stack_lvl+0x8c/0xd0 [ 18.932467] print_report+0x118/0x608 [ 18.932521] kasan_report+0xdc/0x128 [ 18.932572] kasan_check_range+0x100/0x1a8 [ 18.932621] __asan_memmove+0x3c/0x98 [ 18.932669] kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.932723] kunit_try_run_case+0x170/0x3f0 [ 18.932776] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.932831] kthread+0x318/0x620 [ 18.932881] ret_from_fork+0x10/0x20 [ 18.932936] [ 18.938170] Allocated by task 170: [ 18.938757] kasan_save_stack+0x3c/0x68 [ 18.939294] kasan_save_track+0x20/0x40 [ 18.939774] kasan_save_alloc_info+0x40/0x58 [ 18.940415] __kasan_kmalloc+0xd4/0xd8 [ 18.940946] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.941582] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 18.942417] kunit_try_run_case+0x170/0x3f0 [ 18.942822] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.943627] kthread+0x318/0x620 [ 18.944183] ret_from_fork+0x10/0x20 [ 18.944710] [ 18.945104] The buggy address belongs to the object at fff00000c65a7d80 [ 18.945104] which belongs to the cache kmalloc-64 of size 64 [ 18.947088] The buggy address is located 4 bytes inside of [ 18.947088] 64-byte region [fff00000c65a7d80, fff00000c65a7dc0) [ 18.948255] [ 18.948518] The buggy address belongs to the physical page: [ 18.948843] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a7 [ 18.949706] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.950372] page_type: f5(slab) [ 18.950769] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 18.951353] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.951907] page dumped because: kasan: bad access detected [ 18.952959] [ 18.953400] Memory state around the buggy address: [ 18.953697] fff00000c65a7c80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.954748] fff00000c65a7d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.955283] >fff00000c65a7d80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 18.955788] ^ [ 18.956640] fff00000c65a7e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.956899] fff00000c65a7e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.957108] ==================================================================
[ 12.888393] ================================================================== [ 12.888926] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x172/0x330 [ 12.889336] Read of size 18446744073709551614 at addr ffff888101bdcc04 by task kunit_try_catch/188 [ 12.889716] [ 12.889816] CPU: 1 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 12.889855] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.889866] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.889885] Call Trace: [ 12.889897] <TASK> [ 12.889911] dump_stack_lvl+0x73/0xb0 [ 12.889936] print_report+0xd1/0x650 [ 12.889958] ? __virt_addr_valid+0x1db/0x2d0 [ 12.889980] ? kmalloc_memmove_negative_size+0x172/0x330 [ 12.890003] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.890049] ? kmalloc_memmove_negative_size+0x172/0x330 [ 12.890090] kasan_report+0x140/0x180 [ 12.890111] ? kmalloc_memmove_negative_size+0x172/0x330 [ 12.890139] kasan_check_range+0x10c/0x1c0 [ 12.890161] __asan_memmove+0x27/0x70 [ 12.890183] kmalloc_memmove_negative_size+0x172/0x330 [ 12.890206] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.890232] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.890259] kunit_try_run_case+0x1a6/0x480 [ 12.890282] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.890303] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 12.890326] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.890349] ? __kthread_parkme+0x82/0x160 [ 12.890371] ? preempt_count_sub+0x50/0x80 [ 12.890395] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.890417] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.890442] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.890467] kthread+0x324/0x6e0 [ 12.890487] ? trace_preempt_on+0x20/0xc0 [ 12.890510] ? __pfx_kthread+0x10/0x10 [ 12.890531] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.890552] ? calculate_sigpending+0x7b/0xa0 [ 12.890573] ? __pfx_kthread+0x10/0x10 [ 12.890595] ret_from_fork+0x41/0x80 [ 12.890613] ? __pfx_kthread+0x10/0x10 [ 12.890635] ret_from_fork_asm+0x1a/0x30 [ 12.890665] </TASK> [ 12.890675] [ 12.899046] Allocated by task 188: [ 12.899237] kasan_save_stack+0x45/0x70 [ 12.899427] kasan_save_track+0x18/0x40 [ 12.899585] kasan_save_alloc_info+0x3b/0x50 [ 12.899834] __kasan_kmalloc+0xb7/0xc0 [ 12.900052] __kmalloc_cache_noprof+0x18a/0x420 [ 12.900242] kmalloc_memmove_negative_size+0xad/0x330 [ 12.900474] kunit_try_run_case+0x1a6/0x480 [ 12.900665] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.900841] kthread+0x324/0x6e0 [ 12.901008] ret_from_fork+0x41/0x80 [ 12.901304] ret_from_fork_asm+0x1a/0x30 [ 12.901490] [ 12.901561] The buggy address belongs to the object at ffff888101bdcc00 [ 12.901561] which belongs to the cache kmalloc-64 of size 64 [ 12.901993] The buggy address is located 4 bytes inside of [ 12.901993] 64-byte region [ffff888101bdcc00, ffff888101bdcc40) [ 12.902529] [ 12.902651] The buggy address belongs to the physical page: [ 12.902880] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101bdc [ 12.903185] flags: 0x200000000000000(node=0|zone=2) [ 12.903379] page_type: f5(slab) [ 12.903547] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.903883] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.904206] page dumped because: kasan: bad access detected [ 12.904406] [ 12.904497] Memory state around the buggy address: [ 12.904809] ffff888101bdcb00: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 12.905094] ffff888101bdcb80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.905365] >ffff888101bdcc00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.905686] ^ [ 12.905805] ffff888101bdcc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.906094] ffff888101bdcd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.906302] ==================================================================