Date
May 29, 2025, 7:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.776861] ================================================================== [ 21.777067] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 21.777231] Read of size 18446744073709551614 at addr fff00000c5e38504 by task kunit_try_catch/180 [ 21.780664] [ 21.781355] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT [ 21.782288] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.782408] Hardware name: linux,dummy-virt (DT) [ 21.782481] Call trace: [ 21.782528] show_stack+0x20/0x38 (C) [ 21.782669] dump_stack_lvl+0x8c/0xd0 [ 21.784263] print_report+0x118/0x608 [ 21.784976] kasan_report+0xdc/0x128 [ 21.785100] kasan_check_range+0x100/0x1a8 [ 21.785851] __asan_memmove+0x3c/0x98 [ 21.786230] kmalloc_memmove_negative_size+0x154/0x2e0 [ 21.786355] kunit_try_run_case+0x170/0x3f0 [ 21.786976] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.787075] kthread+0x328/0x630 [ 21.787164] ret_from_fork+0x10/0x20 [ 21.787278] [ 21.787330] Allocated by task 180: [ 21.788929] kasan_save_stack+0x3c/0x68 [ 21.789065] kasan_save_track+0x20/0x40 [ 21.789825] kasan_save_alloc_info+0x40/0x58 [ 21.790200] __kasan_kmalloc+0xd4/0xd8 [ 21.790491] __kmalloc_cache_noprof+0x15c/0x3c0 [ 21.791100] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 21.791537] kunit_try_run_case+0x170/0x3f0 [ 21.791918] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.792134] kthread+0x328/0x630 [ 21.792214] ret_from_fork+0x10/0x20 [ 21.795067] [ 21.795134] The buggy address belongs to the object at fff00000c5e38500 [ 21.795134] which belongs to the cache kmalloc-64 of size 64 [ 21.795286] The buggy address is located 4 bytes inside of [ 21.795286] 64-byte region [fff00000c5e38500, fff00000c5e38540) [ 21.795418] [ 21.795466] The buggy address belongs to the physical page: [ 21.795530] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105e38 [ 21.795627] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.795738] page_type: f5(slab) [ 21.795837] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 21.795965] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 21.796069] page dumped because: kasan: bad access detected [ 21.796151] [ 21.796196] Memory state around the buggy address: [ 21.796284] fff00000c5e38400: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 21.796395] fff00000c5e38480: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 21.796523] >fff00000c5e38500: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 21.796637] ^ [ 21.796711] fff00000c5e38580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.796823] fff00000c5e38600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.796921] ==================================================================
[ 11.057299] ================================================================== [ 11.057804] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 11.058146] Read of size 18446744073709551614 at addr ffff8881028a0404 by task kunit_try_catch/197 [ 11.058552] [ 11.058676] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT(voluntary) [ 11.058720] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.058733] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.058754] Call Trace: [ 11.058765] <TASK> [ 11.058780] dump_stack_lvl+0x73/0xb0 [ 11.058806] print_report+0xd1/0x650 [ 11.058828] ? __virt_addr_valid+0x1db/0x2d0 [ 11.059070] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.059095] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.059117] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.059163] kasan_report+0x141/0x180 [ 11.059186] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.059216] kasan_check_range+0x10c/0x1c0 [ 11.059240] __asan_memmove+0x27/0x70 [ 11.059260] kmalloc_memmove_negative_size+0x171/0x330 [ 11.059285] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.059311] ? __schedule+0x10cc/0x2b60 [ 11.059334] ? __pfx_read_tsc+0x10/0x10 [ 11.059355] ? ktime_get_ts64+0x86/0x230 [ 11.059380] kunit_try_run_case+0x1a5/0x480 [ 11.059401] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.059420] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.059443] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.059468] ? __kthread_parkme+0x82/0x180 [ 11.059488] ? preempt_count_sub+0x50/0x80 [ 11.059511] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.059532] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.059555] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.059579] kthread+0x337/0x6f0 [ 11.059599] ? trace_preempt_on+0x20/0xc0 [ 11.059636] ? __pfx_kthread+0x10/0x10 [ 11.059656] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.059678] ? calculate_sigpending+0x7b/0xa0 [ 11.059703] ? __pfx_kthread+0x10/0x10 [ 11.059724] ret_from_fork+0x116/0x1d0 [ 11.059742] ? __pfx_kthread+0x10/0x10 [ 11.059824] ret_from_fork_asm+0x1a/0x30 [ 11.059855] </TASK> [ 11.059865] [ 11.067303] Allocated by task 197: [ 11.067440] kasan_save_stack+0x45/0x70 [ 11.067701] kasan_save_track+0x18/0x40 [ 11.067910] kasan_save_alloc_info+0x3b/0x50 [ 11.068057] __kasan_kmalloc+0xb7/0xc0 [ 11.068190] __kmalloc_cache_noprof+0x189/0x420 [ 11.068343] kmalloc_memmove_negative_size+0xac/0x330 [ 11.068512] kunit_try_run_case+0x1a5/0x480 [ 11.068667] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.068843] kthread+0x337/0x6f0 [ 11.068965] ret_from_fork+0x116/0x1d0 [ 11.069097] ret_from_fork_asm+0x1a/0x30 [ 11.069235] [ 11.069320] The buggy address belongs to the object at ffff8881028a0400 [ 11.069320] which belongs to the cache kmalloc-64 of size 64 [ 11.069983] The buggy address is located 4 bytes inside of [ 11.069983] 64-byte region [ffff8881028a0400, ffff8881028a0440) [ 11.070712] [ 11.070820] The buggy address belongs to the physical page: [ 11.071090] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1028a0 [ 11.071443] flags: 0x200000000000000(node=0|zone=2) [ 11.071701] page_type: f5(slab) [ 11.071872] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.072357] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.072588] page dumped because: kasan: bad access detected [ 11.072950] [ 11.073134] Memory state around the buggy address: [ 11.073414] ffff8881028a0300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.073838] ffff8881028a0380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.074161] >ffff8881028a0400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.074377] ^ [ 11.074496] ffff8881028a0480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.074782] ffff8881028a0500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.075140] ==================================================================