Date
July 9, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.826845] ================================================================== [ 16.826915] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.826968] Read of size 18446744073709551614 at addr fff00000c63bf704 by task kunit_try_catch/180 [ 16.827048] [ 16.827094] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.827208] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.827233] Hardware name: linux,dummy-virt (DT) [ 16.827262] Call trace: [ 16.827285] show_stack+0x20/0x38 (C) [ 16.827334] dump_stack_lvl+0x8c/0xd0 [ 16.827381] print_report+0x118/0x608 [ 16.827425] kasan_report+0xdc/0x128 [ 16.827469] kasan_check_range+0x100/0x1a8 [ 16.827516] __asan_memmove+0x3c/0x98 [ 16.827558] kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.827606] kunit_try_run_case+0x170/0x3f0 [ 16.827652] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.827717] kthread+0x328/0x630 [ 16.827759] ret_from_fork+0x10/0x20 [ 16.827806] [ 16.827824] Allocated by task 180: [ 16.828014] kasan_save_stack+0x3c/0x68 [ 16.828643] kasan_save_track+0x20/0x40 [ 16.830050] kasan_save_alloc_info+0x40/0x58 [ 16.830189] __kasan_kmalloc+0xd4/0xd8 [ 16.830225] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.831874] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 16.832193] kunit_try_run_case+0x170/0x3f0 [ 16.832312] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.832379] kthread+0x328/0x630 [ 16.832604] ret_from_fork+0x10/0x20 [ 16.832644] [ 16.832891] The buggy address belongs to the object at fff00000c63bf700 [ 16.832891] which belongs to the cache kmalloc-64 of size 64 [ 16.833069] The buggy address is located 4 bytes inside of [ 16.833069] 64-byte region [fff00000c63bf700, fff00000c63bf740) [ 16.833616] [ 16.833676] The buggy address belongs to the physical page: [ 16.833711] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063bf [ 16.833959] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.834017] page_type: f5(slab) [ 16.834058] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 16.835991] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.836108] page dumped because: kasan: bad access detected [ 16.836151] [ 16.836169] Memory state around the buggy address: [ 16.836451] fff00000c63bf600: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 16.836579] fff00000c63bf680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.836909] >fff00000c63bf700: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 16.837034] ^ [ 16.837510] fff00000c63bf780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.837900] fff00000c63bf800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.838554] ==================================================================
[ 12.746692] ================================================================== [ 12.747159] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.747410] Read of size 18446744073709551614 at addr ffff88810320ec04 by task kunit_try_catch/197 [ 12.747723] [ 12.747814] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.747857] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.747868] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.747887] Call Trace: [ 12.747899] <TASK> [ 12.747915] dump_stack_lvl+0x73/0xb0 [ 12.747944] print_report+0xd1/0x650 [ 12.747964] ? __virt_addr_valid+0x1db/0x2d0 [ 12.747985] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.748008] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.748029] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.748069] kasan_report+0x141/0x180 [ 12.748090] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.748118] kasan_check_range+0x10c/0x1c0 [ 12.748141] __asan_memmove+0x27/0x70 [ 12.748160] kmalloc_memmove_negative_size+0x171/0x330 [ 12.748184] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.748209] ? __schedule+0x10cc/0x2b60 [ 12.748229] ? __pfx_read_tsc+0x10/0x10 [ 12.748249] ? ktime_get_ts64+0x86/0x230 [ 12.748272] kunit_try_run_case+0x1a5/0x480 [ 12.748296] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.748327] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.748350] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.748372] ? __kthread_parkme+0x82/0x180 [ 12.748392] ? preempt_count_sub+0x50/0x80 [ 12.748415] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.748438] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.748460] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.748483] kthread+0x337/0x6f0 [ 12.748501] ? trace_preempt_on+0x20/0xc0 [ 12.748523] ? __pfx_kthread+0x10/0x10 [ 12.748542] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.748562] ? calculate_sigpending+0x7b/0xa0 [ 12.748585] ? __pfx_kthread+0x10/0x10 [ 12.748605] ret_from_fork+0x116/0x1d0 [ 12.748622] ? __pfx_kthread+0x10/0x10 [ 12.748641] ret_from_fork_asm+0x1a/0x30 [ 12.748671] </TASK> [ 12.748681] [ 12.762278] Allocated by task 197: [ 12.762490] kasan_save_stack+0x45/0x70 [ 12.762641] kasan_save_track+0x18/0x40 [ 12.762845] kasan_save_alloc_info+0x3b/0x50 [ 12.763095] __kasan_kmalloc+0xb7/0xc0 [ 12.763316] __kmalloc_cache_noprof+0x189/0x420 [ 12.763541] kmalloc_memmove_negative_size+0xac/0x330 [ 12.763791] kunit_try_run_case+0x1a5/0x480 [ 12.763960] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.764171] kthread+0x337/0x6f0 [ 12.764433] ret_from_fork+0x116/0x1d0 [ 12.764620] ret_from_fork_asm+0x1a/0x30 [ 12.764823] [ 12.764929] The buggy address belongs to the object at ffff88810320ec00 [ 12.764929] which belongs to the cache kmalloc-64 of size 64 [ 12.765499] The buggy address is located 4 bytes inside of [ 12.765499] 64-byte region [ffff88810320ec00, ffff88810320ec40) [ 12.766098] [ 12.766173] The buggy address belongs to the physical page: [ 12.766368] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10320e [ 12.766777] flags: 0x200000000000000(node=0|zone=2) [ 12.767121] page_type: f5(slab) [ 12.767315] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.767609] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.767950] page dumped because: kasan: bad access detected [ 12.768230] [ 12.768341] Memory state around the buggy address: [ 12.768557] ffff88810320eb00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.768874] ffff88810320eb80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.769301] >ffff88810320ec00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.769624] ^ [ 12.769782] ffff88810320ec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.770177] ffff88810320ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.770503] ==================================================================