Date
June 23, 2025, 1:39 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 24.826649] ================================================================== [ 24.826825] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 24.826965] Read of size 18446744073709551614 at addr fff00000c76ce204 by task kunit_try_catch/182 [ 24.828066] [ 24.828169] CPU: 0 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc1 #1 PREEMPT [ 24.828382] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.828476] Hardware name: linux,dummy-virt (DT) [ 24.828555] Call trace: [ 24.828614] show_stack+0x20/0x38 (C) [ 24.828741] dump_stack_lvl+0x8c/0xd0 [ 24.828937] print_report+0x118/0x608 [ 24.829078] kasan_report+0xdc/0x128 [ 24.829591] kasan_check_range+0x100/0x1a8 [ 24.830600] __asan_memmove+0x3c/0x98 [ 24.830761] kmalloc_memmove_negative_size+0x154/0x2e0 [ 24.830957] kunit_try_run_case+0x170/0x3f0 [ 24.831154] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.831530] kthread+0x328/0x630 [ 24.831652] ret_from_fork+0x10/0x20 [ 24.831807] [ 24.831905] Allocated by task 182: [ 24.832027] kasan_save_stack+0x3c/0x68 [ 24.832249] kasan_save_track+0x20/0x40 [ 24.832425] kasan_save_alloc_info+0x40/0x58 [ 24.832532] __kasan_kmalloc+0xd4/0xd8 [ 24.832944] __kmalloc_cache_noprof+0x16c/0x3c0 [ 24.833053] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 24.833161] kunit_try_run_case+0x170/0x3f0 [ 24.833275] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.833421] kthread+0x328/0x630 [ 24.833526] ret_from_fork+0x10/0x20 [ 24.833884] [ 24.834043] The buggy address belongs to the object at fff00000c76ce200 [ 24.834043] which belongs to the cache kmalloc-64 of size 64 [ 24.834177] The buggy address is located 4 bytes inside of [ 24.834177] 64-byte region [fff00000c76ce200, fff00000c76ce240) [ 24.834314] [ 24.834470] The buggy address belongs to the physical page: [ 24.834592] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1076ce [ 24.834729] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 24.835375] page_type: f5(slab) [ 24.835572] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 24.835694] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 24.835785] page dumped because: kasan: bad access detected [ 24.835863] [ 24.835976] Memory state around the buggy address: [ 24.836115] fff00000c76ce100: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 24.836244] fff00000c76ce180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 24.836351] >fff00000c76ce200: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 24.836494] ^ [ 24.836576] fff00000c76ce280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.836876] fff00000c76ce300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.836983] ==================================================================
[ 17.500088] ================================================================== [ 17.501349] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 17.502194] Read of size 18446744073709551614 at addr ffff888102a16504 by task kunit_try_catch/201 [ 17.503638] [ 17.503908] CPU: 0 UID: 0 PID: 201 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc1 #1 PREEMPT(voluntary) [ 17.504037] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.504074] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.504129] Call Trace: [ 17.504167] <TASK> [ 17.504213] dump_stack_lvl+0x73/0xb0 [ 17.504293] print_report+0xd1/0x650 [ 17.504366] ? __virt_addr_valid+0x1db/0x2d0 [ 17.504445] ? kmalloc_memmove_negative_size+0x171/0x330 [ 17.504509] ? kasan_complete_mode_report_info+0x2a/0x200 [ 17.504581] ? kmalloc_memmove_negative_size+0x171/0x330 [ 17.504701] kasan_report+0x141/0x180 [ 17.504782] ? kmalloc_memmove_negative_size+0x171/0x330 [ 17.504850] kasan_check_range+0x10c/0x1c0 [ 17.504880] __asan_memmove+0x27/0x70 [ 17.504909] kmalloc_memmove_negative_size+0x171/0x330 [ 17.504939] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 17.504969] ? __schedule+0x10cc/0x2b60 [ 17.505002] ? __pfx_read_tsc+0x10/0x10 [ 17.505029] ? ktime_get_ts64+0x86/0x230 [ 17.505065] kunit_try_run_case+0x1a5/0x480 [ 17.505101] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.505132] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 17.505165] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.505197] ? __kthread_parkme+0x82/0x180 [ 17.505259] ? preempt_count_sub+0x50/0x80 [ 17.505303] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.505338] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.505372] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.505405] kthread+0x337/0x6f0 [ 17.505427] ? trace_preempt_on+0x20/0xc0 [ 17.505460] ? __pfx_kthread+0x10/0x10 [ 17.505483] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.505513] ? calculate_sigpending+0x7b/0xa0 [ 17.505542] ? __pfx_kthread+0x10/0x10 [ 17.505565] ret_from_fork+0x41/0x80 [ 17.505594] ? __pfx_kthread+0x10/0x10 [ 17.505670] ret_from_fork_asm+0x1a/0x30 [ 17.505774] </TASK> [ 17.505808] [ 17.525959] Allocated by task 201: [ 17.526384] kasan_save_stack+0x45/0x70 [ 17.526753] kasan_save_track+0x18/0x40 [ 17.527058] kasan_save_alloc_info+0x3b/0x50 [ 17.527379] __kasan_kmalloc+0xb7/0xc0 [ 17.527793] __kmalloc_cache_noprof+0x189/0x420 [ 17.528601] kmalloc_memmove_negative_size+0xac/0x330 [ 17.529493] kunit_try_run_case+0x1a5/0x480 [ 17.530355] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.531085] kthread+0x337/0x6f0 [ 17.531357] ret_from_fork+0x41/0x80 [ 17.531894] ret_from_fork_asm+0x1a/0x30 [ 17.532348] [ 17.532582] The buggy address belongs to the object at ffff888102a16500 [ 17.532582] which belongs to the cache kmalloc-64 of size 64 [ 17.533577] The buggy address is located 4 bytes inside of [ 17.533577] 64-byte region [ffff888102a16500, ffff888102a16540) [ 17.534631] [ 17.534846] The buggy address belongs to the physical page: [ 17.535270] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a16 [ 17.535962] flags: 0x200000000000000(node=0|zone=2) [ 17.536411] page_type: f5(slab) [ 17.536984] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 17.537783] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 17.538401] page dumped because: kasan: bad access detected [ 17.538922] [ 17.539143] Memory state around the buggy address: [ 17.539755] ffff888102a16400: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 17.540262] ffff888102a16480: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 17.541045] >ffff888102a16500: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 17.541806] ^ [ 17.542166] ffff888102a16580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.542904] ffff888102a16600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.543454] ==================================================================