Date
June 23, 2025, 7:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.074168] ================================================================== [ 33.074416] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 33.074606] Read of size 18446744073709551614 at addr fff00000c570b104 by task kunit_try_catch/192 [ 33.074823] [ 33.074900] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT [ 33.075127] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.075163] Hardware name: linux,dummy-virt (DT) [ 33.075205] Call trace: [ 33.075232] show_stack+0x20/0x38 (C) [ 33.075298] dump_stack_lvl+0x8c/0xd0 [ 33.075357] print_report+0x118/0x608 [ 33.075413] kasan_report+0xdc/0x128 [ 33.075470] kasan_check_range+0x100/0x1a8 [ 33.075530] __asan_memmove+0x3c/0x98 [ 33.075587] kmalloc_memmove_negative_size+0x154/0x2e0 [ 33.075650] kunit_try_run_case+0x170/0x3f0 [ 33.075706] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.075769] kthread+0x328/0x630 [ 33.075824] ret_from_fork+0x10/0x20 [ 33.075881] [ 33.075905] Allocated by task 192: [ 33.075940] kasan_save_stack+0x3c/0x68 [ 33.075994] kasan_save_track+0x20/0x40 [ 33.076068] kasan_save_alloc_info+0x40/0x58 [ 33.076120] __kasan_kmalloc+0xd4/0xd8 [ 33.076165] __kmalloc_cache_noprof+0x16c/0x3c0 [ 33.076216] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 33.076266] kunit_try_run_case+0x170/0x3f0 [ 33.076312] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.076365] kthread+0x328/0x630 [ 33.076404] ret_from_fork+0x10/0x20 [ 33.076446] [ 33.076471] The buggy address belongs to the object at fff00000c570b100 [ 33.076471] which belongs to the cache kmalloc-64 of size 64 [ 33.076538] The buggy address is located 4 bytes inside of [ 33.076538] 64-byte region [fff00000c570b100, fff00000c570b140) [ 33.076605] [ 33.076631] The buggy address belongs to the physical page: [ 33.076667] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10570b [ 33.076729] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.076788] page_type: f5(slab) [ 33.076831] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 33.076890] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 33.076934] page dumped because: kasan: bad access detected [ 33.076971] [ 33.076992] Memory state around the buggy address: [ 33.077294] fff00000c570b000: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 33.077421] fff00000c570b080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 33.077854] >fff00000c570b100: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 33.077974] ^ [ 33.078136] fff00000c570b180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.078619] fff00000c570b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.078975] ==================================================================
[ 21.970409] ================================================================== [ 21.970814] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 21.971463] Read of size 18446744073709551614 at addr ffff8881023b5804 by task kunit_try_catch/209 [ 21.972279] [ 21.972448] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT(voluntary) [ 21.972501] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.972512] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 21.972531] Call Trace: [ 21.972544] <TASK> [ 21.972560] dump_stack_lvl+0x73/0xb0 [ 21.972591] print_report+0xd1/0x650 [ 21.972610] ? __virt_addr_valid+0x1db/0x2d0 [ 21.972629] ? kmalloc_memmove_negative_size+0x171/0x330 [ 21.972649] ? kasan_complete_mode_report_info+0x2a/0x200 [ 21.972671] ? kmalloc_memmove_negative_size+0x171/0x330 [ 21.972720] kasan_report+0x141/0x180 [ 21.972741] ? kmalloc_memmove_negative_size+0x171/0x330 [ 21.972766] kasan_check_range+0x10c/0x1c0 [ 21.972786] __asan_memmove+0x27/0x70 [ 21.972806] kmalloc_memmove_negative_size+0x171/0x330 [ 21.972829] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 21.973096] ? __schedule+0x10cc/0x2b60 [ 21.973136] ? __pfx_read_tsc+0x10/0x10 [ 21.973170] ? ktime_get_ts64+0x86/0x230 [ 21.973263] kunit_try_run_case+0x1a5/0x480 [ 21.973309] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.973337] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 21.973358] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 21.973392] ? __kthread_parkme+0x82/0x180 [ 21.973413] ? preempt_count_sub+0x50/0x80 [ 21.973434] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.973454] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.973474] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 21.973495] kthread+0x337/0x6f0 [ 21.973511] ? trace_preempt_on+0x20/0xc0 [ 21.973531] ? __pfx_kthread+0x10/0x10 [ 21.973548] ? _raw_spin_unlock_irq+0x47/0x80 [ 21.973565] ? calculate_sigpending+0x7b/0xa0 [ 21.973585] ? __pfx_kthread+0x10/0x10 [ 21.973603] ret_from_fork+0x116/0x1d0 [ 21.973619] ? __pfx_kthread+0x10/0x10 [ 21.973636] ret_from_fork_asm+0x1a/0x30 [ 21.973663] </TASK> [ 21.973674] [ 21.981815] Allocated by task 209: [ 21.981999] kasan_save_stack+0x45/0x70 [ 21.982218] kasan_save_track+0x18/0x40 [ 21.982414] kasan_save_alloc_info+0x3b/0x50 [ 21.982560] __kasan_kmalloc+0xb7/0xc0 [ 21.982707] __kmalloc_cache_noprof+0x189/0x420 [ 21.982883] kmalloc_memmove_negative_size+0xac/0x330 [ 21.983069] kunit_try_run_case+0x1a5/0x480 [ 21.983370] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.983743] kthread+0x337/0x6f0 [ 21.984120] ret_from_fork+0x116/0x1d0 [ 21.984424] ret_from_fork_asm+0x1a/0x30 [ 21.984715] [ 21.985343] The buggy address belongs to the object at ffff8881023b5800 [ 21.985343] which belongs to the cache kmalloc-64 of size 64 [ 21.986513] The buggy address is located 4 bytes inside of [ 21.986513] 64-byte region [ffff8881023b5800, ffff8881023b5840) [ 21.987412] [ 21.987733] The buggy address belongs to the physical page: [ 21.988309] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1023b5 [ 21.988644] flags: 0x200000000000000(node=0|zone=2) [ 21.989097] page_type: f5(slab) [ 21.989264] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 21.989577] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 21.990167] page dumped because: kasan: bad access detected [ 21.990583] [ 21.990751] Memory state around the buggy address: [ 21.991290] ffff8881023b5700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.991690] ffff8881023b5780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.992092] >ffff8881023b5800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 21.992641] ^ [ 21.992806] ffff8881023b5880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.993416] ffff8881023b5900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.993729] ==================================================================