Date
July 11, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.760697] ================================================================== [ 16.760951] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.761503] Read of size 18446744073709551614 at addr fff00000c6f45c04 by task kunit_try_catch/181 [ 16.761688] [ 16.761731] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.761815] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.761851] Hardware name: linux,dummy-virt (DT) [ 16.761882] Call trace: [ 16.761906] show_stack+0x20/0x38 (C) [ 16.762258] dump_stack_lvl+0x8c/0xd0 [ 16.762313] print_report+0x118/0x608 [ 16.762359] kasan_report+0xdc/0x128 [ 16.762402] kasan_check_range+0x100/0x1a8 [ 16.762918] __asan_memmove+0x3c/0x98 [ 16.762973] kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.763138] kunit_try_run_case+0x170/0x3f0 [ 16.763210] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.763261] kthread+0x328/0x630 [ 16.763302] ret_from_fork+0x10/0x20 [ 16.763357] [ 16.763376] Allocated by task 181: [ 16.763404] kasan_save_stack+0x3c/0x68 [ 16.763501] kasan_save_track+0x20/0x40 [ 16.763658] kasan_save_alloc_info+0x40/0x58 [ 16.763776] __kasan_kmalloc+0xd4/0xd8 [ 16.763813] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.764290] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 16.764552] kunit_try_run_case+0x170/0x3f0 [ 16.764630] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.764672] kthread+0x328/0x630 [ 16.764703] ret_from_fork+0x10/0x20 [ 16.764740] [ 16.764762] The buggy address belongs to the object at fff00000c6f45c00 [ 16.764762] which belongs to the cache kmalloc-64 of size 64 [ 16.764836] The buggy address is located 4 bytes inside of [ 16.764836] 64-byte region [fff00000c6f45c00, fff00000c6f45c40) [ 16.764918] [ 16.764939] The buggy address belongs to the physical page: [ 16.764975] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106f45 [ 16.765543] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.765653] page_type: f5(slab) [ 16.765697] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 16.765915] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.766007] page dumped because: kasan: bad access detected [ 16.766041] [ 16.766059] Memory state around the buggy address: [ 16.766165] fff00000c6f45b00: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 16.766230] fff00000c6f45b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.766334] >fff00000c6f45c00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 16.766372] ^ [ 16.766455] fff00000c6f45c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.766608] fff00000c6f45d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.766670] ==================================================================
[ 12.550161] ================================================================== [ 12.550668] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.551008] Read of size 18446744073709551614 at addr ffff888102c61b84 by task kunit_try_catch/197 [ 12.551464] [ 12.551558] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.551598] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.551609] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.551627] Call Trace: [ 12.551638] <TASK> [ 12.551652] dump_stack_lvl+0x73/0xb0 [ 12.551681] print_report+0xd1/0x650 [ 12.551703] ? __virt_addr_valid+0x1db/0x2d0 [ 12.551725] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.551750] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.551773] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.551798] kasan_report+0x141/0x180 [ 12.551820] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.551850] kasan_check_range+0x10c/0x1c0 [ 12.551873] __asan_memmove+0x27/0x70 [ 12.551979] kmalloc_memmove_negative_size+0x171/0x330 [ 12.552005] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.552066] ? __schedule+0x10cc/0x2b60 [ 12.552089] ? __pfx_read_tsc+0x10/0x10 [ 12.552110] ? ktime_get_ts64+0x86/0x230 [ 12.552134] kunit_try_run_case+0x1a5/0x480 [ 12.552158] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.552180] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.552204] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.552227] ? __kthread_parkme+0x82/0x180 [ 12.552247] ? preempt_count_sub+0x50/0x80 [ 12.552270] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.552294] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.552318] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.552342] kthread+0x337/0x6f0 [ 12.552360] ? trace_preempt_on+0x20/0xc0 [ 12.552383] ? __pfx_kthread+0x10/0x10 [ 12.552403] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.552424] ? calculate_sigpending+0x7b/0xa0 [ 12.552448] ? __pfx_kthread+0x10/0x10 [ 12.552469] ret_from_fork+0x116/0x1d0 [ 12.552486] ? __pfx_kthread+0x10/0x10 [ 12.552506] ret_from_fork_asm+0x1a/0x30 [ 12.552537] </TASK> [ 12.552547] [ 12.560095] Allocated by task 197: [ 12.560227] kasan_save_stack+0x45/0x70 [ 12.560371] kasan_save_track+0x18/0x40 [ 12.560563] kasan_save_alloc_info+0x3b/0x50 [ 12.560775] __kasan_kmalloc+0xb7/0xc0 [ 12.560984] __kmalloc_cache_noprof+0x189/0x420 [ 12.561392] kmalloc_memmove_negative_size+0xac/0x330 [ 12.561567] kunit_try_run_case+0x1a5/0x480 [ 12.561714] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.562266] kthread+0x337/0x6f0 [ 12.562547] ret_from_fork+0x116/0x1d0 [ 12.562719] ret_from_fork_asm+0x1a/0x30 [ 12.562900] [ 12.563017] The buggy address belongs to the object at ffff888102c61b80 [ 12.563017] which belongs to the cache kmalloc-64 of size 64 [ 12.563561] The buggy address is located 4 bytes inside of [ 12.563561] 64-byte region [ffff888102c61b80, ffff888102c61bc0) [ 12.564031] [ 12.564157] The buggy address belongs to the physical page: [ 12.564443] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c61 [ 12.564788] flags: 0x200000000000000(node=0|zone=2) [ 12.564987] page_type: f5(slab) [ 12.565107] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.565339] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.565616] page dumped because: kasan: bad access detected [ 12.566111] [ 12.566207] Memory state around the buggy address: [ 12.566407] ffff888102c61a80: 00 00 00 00 05 fc fc fc fc fc fc fc fc fc fc fc [ 12.566626] ffff888102c61b00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.567066] >ffff888102c61b80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.567392] ^ [ 12.567557] ffff888102c61c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.567872] ffff888102c61c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.568324] ==================================================================