Date
July 4, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.145365] ================================================================== [ 18.145436] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.146971] Read of size 18446744073709551614 at addr fff00000c7747404 by task kunit_try_catch/180 [ 18.147243] [ 18.147291] CPU: 0 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.147373] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.147565] Hardware name: linux,dummy-virt (DT) [ 18.147615] Call trace: [ 18.147654] show_stack+0x20/0x38 (C) [ 18.147768] dump_stack_lvl+0x8c/0xd0 [ 18.147866] print_report+0x118/0x608 [ 18.148029] kasan_report+0xdc/0x128 [ 18.148115] kasan_check_range+0x100/0x1a8 [ 18.148198] __asan_memmove+0x3c/0x98 [ 18.148307] kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.148384] kunit_try_run_case+0x170/0x3f0 [ 18.148470] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.148574] kthread+0x328/0x630 [ 18.148627] ret_from_fork+0x10/0x20 [ 18.148675] [ 18.148716] Allocated by task 180: [ 18.149030] kasan_save_stack+0x3c/0x68 [ 18.149106] kasan_save_track+0x20/0x40 [ 18.149186] kasan_save_alloc_info+0x40/0x58 [ 18.149255] __kasan_kmalloc+0xd4/0xd8 [ 18.149314] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.149441] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 18.149510] kunit_try_run_case+0x170/0x3f0 [ 18.149588] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.149629] kthread+0x328/0x630 [ 18.150772] ret_from_fork+0x10/0x20 [ 18.150830] [ 18.150850] The buggy address belongs to the object at fff00000c7747400 [ 18.150850] which belongs to the cache kmalloc-64 of size 64 [ 18.151011] The buggy address is located 4 bytes inside of [ 18.151011] 64-byte region [fff00000c7747400, fff00000c7747440) [ 18.151098] [ 18.151155] The buggy address belongs to the physical page: [ 18.151187] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107747 [ 18.151242] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.151290] page_type: f5(slab) [ 18.151355] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 18.151414] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.151668] page dumped because: kasan: bad access detected [ 18.151886] [ 18.151921] Memory state around the buggy address: [ 18.152406] fff00000c7747300: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 18.152846] fff00000c7747380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.155637] >fff00000c7747400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 18.155814] ^ [ 18.156097] fff00000c7747480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.157089] fff00000c7747500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.157701] ==================================================================
[ 12.111648] ================================================================== [ 12.112165] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.112680] Read of size 18446744073709551614 at addr ffff888102639984 by task kunit_try_catch/197 [ 12.113123] [ 12.113244] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.113292] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.113304] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.113326] Call Trace: [ 12.113342] <TASK> [ 12.113361] dump_stack_lvl+0x73/0xb0 [ 12.113393] print_report+0xd1/0x650 [ 12.113415] ? __virt_addr_valid+0x1db/0x2d0 [ 12.113437] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.113459] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.113480] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.113521] kasan_report+0x141/0x180 [ 12.113542] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.113570] kasan_check_range+0x10c/0x1c0 [ 12.113591] __asan_memmove+0x27/0x70 [ 12.113610] kmalloc_memmove_negative_size+0x171/0x330 [ 12.113633] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.113657] ? __schedule+0x10cc/0x2b60 [ 12.113677] ? __pfx_read_tsc+0x10/0x10 [ 12.113698] ? ktime_get_ts64+0x86/0x230 [ 12.113721] kunit_try_run_case+0x1a5/0x480 [ 12.113746] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.113804] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.113827] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.113848] ? __kthread_parkme+0x82/0x180 [ 12.113868] ? preempt_count_sub+0x50/0x80 [ 12.113890] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.113912] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.113932] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.113954] kthread+0x337/0x6f0 [ 12.113972] ? trace_preempt_on+0x20/0xc0 [ 12.113994] ? __pfx_kthread+0x10/0x10 [ 12.114013] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.114032] ? calculate_sigpending+0x7b/0xa0 [ 12.114055] ? __pfx_kthread+0x10/0x10 [ 12.114076] ret_from_fork+0x116/0x1d0 [ 12.114094] ? __pfx_kthread+0x10/0x10 [ 12.114113] ret_from_fork_asm+0x1a/0x30 [ 12.114143] </TASK> [ 12.114153] [ 12.124116] Allocated by task 197: [ 12.124877] kasan_save_stack+0x45/0x70 [ 12.125128] kasan_save_track+0x18/0x40 [ 12.125445] kasan_save_alloc_info+0x3b/0x50 [ 12.125646] __kasan_kmalloc+0xb7/0xc0 [ 12.125824] __kmalloc_cache_noprof+0x189/0x420 [ 12.126037] kmalloc_memmove_negative_size+0xac/0x330 [ 12.126592] kunit_try_run_case+0x1a5/0x480 [ 12.126780] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.127012] kthread+0x337/0x6f0 [ 12.127170] ret_from_fork+0x116/0x1d0 [ 12.127422] ret_from_fork_asm+0x1a/0x30 [ 12.127610] [ 12.127704] The buggy address belongs to the object at ffff888102639980 [ 12.127704] which belongs to the cache kmalloc-64 of size 64 [ 12.128189] The buggy address is located 4 bytes inside of [ 12.128189] 64-byte region [ffff888102639980, ffff8881026399c0) [ 12.128693] [ 12.128769] The buggy address belongs to the physical page: [ 12.128954] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102639 [ 12.129275] flags: 0x200000000000000(node=0|zone=2) [ 12.129512] page_type: f5(slab) [ 12.129684] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.129919] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.130423] page dumped because: kasan: bad access detected [ 12.130687] [ 12.130783] Memory state around the buggy address: [ 12.131018] ffff888102639880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.131837] ffff888102639900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.132170] >ffff888102639980: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.132962] ^ [ 12.133094] ffff888102639a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.133826] ffff888102639a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.134205] ==================================================================