Date
July 16, 2025, 3:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.727138] ================================================================== [ 16.727204] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.728977] Read of size 18446744073709551614 at addr fff00000c6adf204 by task kunit_try_catch/180 [ 16.729078] [ 16.729110] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.729192] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.729218] Hardware name: linux,dummy-virt (DT) [ 16.729247] Call trace: [ 16.729269] show_stack+0x20/0x38 (C) [ 16.729319] dump_stack_lvl+0x8c/0xd0 [ 16.729365] print_report+0x118/0x5d0 [ 16.729410] kasan_report+0xdc/0x128 [ 16.729454] kasan_check_range+0x100/0x1a8 [ 16.729501] __asan_memmove+0x3c/0x98 [ 16.729542] kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.729591] kunit_try_run_case+0x170/0x3f0 [ 16.729636] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.729688] kthread+0x328/0x630 [ 16.729816] ret_from_fork+0x10/0x20 [ 16.729876] [ 16.729910] Allocated by task 180: [ 16.729947] kasan_save_stack+0x3c/0x68 [ 16.729988] kasan_save_track+0x20/0x40 [ 16.730025] kasan_save_alloc_info+0x40/0x58 [ 16.730079] __kasan_kmalloc+0xd4/0xd8 [ 16.730115] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.730412] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 16.730462] kunit_try_run_case+0x170/0x3f0 [ 16.730501] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.730543] kthread+0x328/0x630 [ 16.730575] ret_from_fork+0x10/0x20 [ 16.730627] [ 16.730657] The buggy address belongs to the object at fff00000c6adf200 [ 16.730657] which belongs to the cache kmalloc-64 of size 64 [ 16.730748] The buggy address is located 4 bytes inside of [ 16.730748] 64-byte region [fff00000c6adf200, fff00000c6adf240) [ 16.730819] [ 16.730839] The buggy address belongs to the physical page: [ 16.730888] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106adf [ 16.730943] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.730991] page_type: f5(slab) [ 16.731040] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 16.731091] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.731132] page dumped because: kasan: bad access detected [ 16.731165] [ 16.731182] Memory state around the buggy address: [ 16.731224] fff00000c6adf100: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 16.731267] fff00000c6adf180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.731319] >fff00000c6adf200: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 16.731356] ^ [ 16.731384] fff00000c6adf280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.731433] fff00000c6adf300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.731473] ==================================================================
[ 12.741497] ================================================================== [ 12.742642] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.743685] Read of size 18446744073709551614 at addr ffff888103063e04 by task kunit_try_catch/197 [ 12.744113] [ 12.744214] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.744260] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.744271] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.744292] Call Trace: [ 12.744304] <TASK> [ 12.744320] dump_stack_lvl+0x73/0xb0 [ 12.744351] print_report+0xd1/0x610 [ 12.744374] ? __virt_addr_valid+0x1db/0x2d0 [ 12.744397] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.744428] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.744451] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.744495] kasan_report+0x141/0x180 [ 12.744517] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.744547] kasan_check_range+0x10c/0x1c0 [ 12.744571] __asan_memmove+0x27/0x70 [ 12.744591] kmalloc_memmove_negative_size+0x171/0x330 [ 12.744617] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.744645] ? __schedule+0x10cc/0x2b60 [ 12.744667] ? __pfx_read_tsc+0x10/0x10 [ 12.744688] ? ktime_get_ts64+0x86/0x230 [ 12.744714] kunit_try_run_case+0x1a5/0x480 [ 12.744740] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.744775] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.745138] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.745164] ? __kthread_parkme+0x82/0x180 [ 12.745186] ? preempt_count_sub+0x50/0x80 [ 12.745210] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.745235] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.745260] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.745286] kthread+0x337/0x6f0 [ 12.745306] ? trace_preempt_on+0x20/0xc0 [ 12.745330] ? __pfx_kthread+0x10/0x10 [ 12.745351] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.745372] ? calculate_sigpending+0x7b/0xa0 [ 12.745397] ? __pfx_kthread+0x10/0x10 [ 12.745418] ret_from_fork+0x116/0x1d0 [ 12.745451] ? __pfx_kthread+0x10/0x10 [ 12.745472] ret_from_fork_asm+0x1a/0x30 [ 12.745502] </TASK> [ 12.745512] [ 12.758082] Allocated by task 197: [ 12.758500] kasan_save_stack+0x45/0x70 [ 12.758817] kasan_save_track+0x18/0x40 [ 12.759283] kasan_save_alloc_info+0x3b/0x50 [ 12.759541] __kasan_kmalloc+0xb7/0xc0 [ 12.759876] __kmalloc_cache_noprof+0x189/0x420 [ 12.760251] kmalloc_memmove_negative_size+0xac/0x330 [ 12.760479] kunit_try_run_case+0x1a5/0x480 [ 12.760927] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.761358] kthread+0x337/0x6f0 [ 12.761667] ret_from_fork+0x116/0x1d0 [ 12.762236] ret_from_fork_asm+0x1a/0x30 [ 12.762466] [ 12.762730] The buggy address belongs to the object at ffff888103063e00 [ 12.762730] which belongs to the cache kmalloc-64 of size 64 [ 12.763597] The buggy address is located 4 bytes inside of [ 12.763597] 64-byte region [ffff888103063e00, ffff888103063e40) [ 12.764097] [ 12.764184] The buggy address belongs to the physical page: [ 12.764361] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103063 [ 12.764607] flags: 0x200000000000000(node=0|zone=2) [ 12.764786] page_type: f5(slab) [ 12.765023] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.765941] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.766559] page dumped because: kasan: bad access detected [ 12.766738] [ 12.766820] Memory state around the buggy address: [ 12.766979] ffff888103063d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.767450] ffff888103063d80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.768078] >ffff888103063e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.768724] ^ [ 12.769032] ffff888103063e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.769773] ffff888103063f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.770518] ==================================================================