Date
July 20, 2025, 8:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.265673] ================================================================== [ 15.265741] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 15.265841] Read of size 18446744073709551614 at addr fff00000c770c004 by task kunit_try_catch/181 [ 15.265939] [ 15.265973] CPU: 1 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.266052] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.266079] Hardware name: linux,dummy-virt (DT) [ 15.266109] Call trace: [ 15.266131] show_stack+0x20/0x38 (C) [ 15.266181] dump_stack_lvl+0x8c/0xd0 [ 15.266240] print_report+0x118/0x5d0 [ 15.266285] kasan_report+0xdc/0x128 [ 15.266329] kasan_check_range+0x100/0x1a8 [ 15.266376] __asan_memmove+0x3c/0x98 [ 15.266417] kmalloc_memmove_negative_size+0x154/0x2e0 [ 15.266466] kunit_try_run_case+0x170/0x3f0 [ 15.266512] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.266563] kthread+0x328/0x630 [ 15.266786] ret_from_fork+0x10/0x20 [ 15.266835] [ 15.266857] Allocated by task 181: [ 15.266884] kasan_save_stack+0x3c/0x68 [ 15.266923] kasan_save_track+0x20/0x40 [ 15.266960] kasan_save_alloc_info+0x40/0x58 [ 15.267001] __kasan_kmalloc+0xd4/0xd8 [ 15.267038] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.267088] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 15.267132] kunit_try_run_case+0x170/0x3f0 [ 15.267171] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.267807] kthread+0x328/0x630 [ 15.267863] ret_from_fork+0x10/0x20 [ 15.267899] [ 15.268251] The buggy address belongs to the object at fff00000c770c000 [ 15.268251] which belongs to the cache kmalloc-64 of size 64 [ 15.268854] The buggy address is located 4 bytes inside of [ 15.268854] 64-byte region [fff00000c770c000, fff00000c770c040) [ 15.269028] [ 15.269142] The buggy address belongs to the physical page: [ 15.269216] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10770c [ 15.269647] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.269753] page_type: f5(slab) [ 15.269864] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 15.269932] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 15.270181] page dumped because: kasan: bad access detected [ 15.270325] [ 15.270430] Memory state around the buggy address: [ 15.270698] fff00000c770bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.270868] fff00000c770bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.270946] >fff00000c770c000: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 15.271095] ^ [ 15.271163] fff00000c770c080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.271573] fff00000c770c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.271657] ==================================================================
[ 13.136757] ================================================================== [ 13.137422] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 13.137970] Read of size 18446744073709551614 at addr ffff88810389b904 by task kunit_try_catch/198 [ 13.138535] [ 13.138666] CPU: 1 UID: 0 PID: 198 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.138714] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.138726] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.138747] Call Trace: [ 13.138759] <TASK> [ 13.138777] dump_stack_lvl+0x73/0xb0 [ 13.138809] print_report+0xd1/0x610 [ 13.139061] ? __virt_addr_valid+0x1db/0x2d0 [ 13.139089] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.139115] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.139137] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.139183] kasan_report+0x141/0x180 [ 13.139206] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.139235] kasan_check_range+0x10c/0x1c0 [ 13.139259] __asan_memmove+0x27/0x70 [ 13.139278] kmalloc_memmove_negative_size+0x171/0x330 [ 13.139303] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 13.139328] ? __schedule+0x10c6/0x2b60 [ 13.139351] ? __pfx_read_tsc+0x10/0x10 [ 13.139372] ? ktime_get_ts64+0x86/0x230 [ 13.139396] kunit_try_run_case+0x1a5/0x480 [ 13.139422] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.139444] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.139482] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.139506] ? __kthread_parkme+0x82/0x180 [ 13.139527] ? preempt_count_sub+0x50/0x80 [ 13.139551] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.139574] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.139598] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.139621] kthread+0x337/0x6f0 [ 13.139640] ? trace_preempt_on+0x20/0xc0 [ 13.139663] ? __pfx_kthread+0x10/0x10 [ 13.139684] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.139706] ? calculate_sigpending+0x7b/0xa0 [ 13.139730] ? __pfx_kthread+0x10/0x10 [ 13.139751] ret_from_fork+0x116/0x1d0 [ 13.139770] ? __pfx_kthread+0x10/0x10 [ 13.139790] ret_from_fork_asm+0x1a/0x30 [ 13.139821] </TASK> [ 13.139834] [ 13.150902] Allocated by task 198: [ 13.151325] kasan_save_stack+0x45/0x70 [ 13.151600] kasan_save_track+0x18/0x40 [ 13.151814] kasan_save_alloc_info+0x3b/0x50 [ 13.152005] __kasan_kmalloc+0xb7/0xc0 [ 13.152324] __kmalloc_cache_noprof+0x189/0x420 [ 13.152594] kmalloc_memmove_negative_size+0xac/0x330 [ 13.152851] kunit_try_run_case+0x1a5/0x480 [ 13.153311] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.153662] kthread+0x337/0x6f0 [ 13.153802] ret_from_fork+0x116/0x1d0 [ 13.154180] ret_from_fork_asm+0x1a/0x30 [ 13.154575] [ 13.154670] The buggy address belongs to the object at ffff88810389b900 [ 13.154670] which belongs to the cache kmalloc-64 of size 64 [ 13.155569] The buggy address is located 4 bytes inside of [ 13.155569] 64-byte region [ffff88810389b900, ffff88810389b940) [ 13.156362] [ 13.156485] The buggy address belongs to the physical page: [ 13.156737] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10389b [ 13.157451] flags: 0x200000000000000(node=0|zone=2) [ 13.157713] page_type: f5(slab) [ 13.157983] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 13.158626] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 13.159040] page dumped because: kasan: bad access detected [ 13.159364] [ 13.159449] Memory state around the buggy address: [ 13.159669] ffff88810389b800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.160494] ffff88810389b880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.160803] >ffff88810389b900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 13.161264] ^ [ 13.161397] ffff88810389b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.161733] ffff88810389ba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.162393] ==================================================================