Date
July 3, 2025, 11:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.774126] ================================================================== [ 19.774573] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.775200] Read of size 18446744073709551614 at addr fff00000c77ceb84 by task kunit_try_catch/180 [ 19.775533] [ 19.775768] CPU: 0 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.775905] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.775944] Hardware name: linux,dummy-virt (DT) [ 19.775978] Call trace: [ 19.776004] show_stack+0x20/0x38 (C) [ 19.776161] dump_stack_lvl+0x8c/0xd0 [ 19.776294] print_report+0x118/0x608 [ 19.776397] kasan_report+0xdc/0x128 [ 19.776526] kasan_check_range+0x100/0x1a8 [ 19.776648] __asan_memmove+0x3c/0x98 [ 19.776744] kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.776864] kunit_try_run_case+0x170/0x3f0 [ 19.776984] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.777161] kthread+0x328/0x630 [ 19.777289] ret_from_fork+0x10/0x20 [ 19.777404] [ 19.777467] Allocated by task 180: [ 19.777557] kasan_save_stack+0x3c/0x68 [ 19.777647] kasan_save_track+0x20/0x40 [ 19.777974] kasan_save_alloc_info+0x40/0x58 [ 19.778095] __kasan_kmalloc+0xd4/0xd8 [ 19.778179] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.778669] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 19.778826] kunit_try_run_case+0x170/0x3f0 [ 19.778928] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.779016] kthread+0x328/0x630 [ 19.779104] ret_from_fork+0x10/0x20 [ 19.779181] [ 19.779225] The buggy address belongs to the object at fff00000c77ceb80 [ 19.779225] which belongs to the cache kmalloc-64 of size 64 [ 19.779440] The buggy address is located 4 bytes inside of [ 19.779440] 64-byte region [fff00000c77ceb80, fff00000c77cebc0) [ 19.779618] [ 19.779661] The buggy address belongs to the physical page: [ 19.779766] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077ce [ 19.779915] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.780062] page_type: f5(slab) [ 19.780189] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.780308] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.780405] page dumped because: kasan: bad access detected [ 19.780478] [ 19.780532] Memory state around the buggy address: [ 19.780652] fff00000c77cea80: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 19.780777] fff00000c77ceb00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.780886] >fff00000c77ceb80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 19.780999] ^ [ 19.781342] fff00000c77cec00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.781437] fff00000c77cec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.781525] ==================================================================
[ 11.724651] ================================================================== [ 11.725222] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 11.725597] Read of size 18446744073709551614 at addr ffff8881027afb84 by task kunit_try_catch/197 [ 11.726022] [ 11.726136] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.726209] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.726220] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.726240] Call Trace: [ 11.726262] <TASK> [ 11.726276] dump_stack_lvl+0x73/0xb0 [ 11.726324] print_report+0xd1/0x650 [ 11.726347] ? __virt_addr_valid+0x1db/0x2d0 [ 11.726368] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.726390] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.726410] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.726451] kasan_report+0x141/0x180 [ 11.726505] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.726538] kasan_check_range+0x10c/0x1c0 [ 11.726560] __asan_memmove+0x27/0x70 [ 11.726590] kmalloc_memmove_negative_size+0x171/0x330 [ 11.726613] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.726636] ? __schedule+0x10cc/0x2b60 [ 11.726657] ? __pfx_read_tsc+0x10/0x10 [ 11.726676] ? ktime_get_ts64+0x86/0x230 [ 11.726727] kunit_try_run_case+0x1a5/0x480 [ 11.726750] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.726770] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.726798] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.726819] ? __kthread_parkme+0x82/0x180 [ 11.726838] ? preempt_count_sub+0x50/0x80 [ 11.726860] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.726882] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.726903] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.726924] kthread+0x337/0x6f0 [ 11.726966] ? trace_preempt_on+0x20/0xc0 [ 11.726988] ? __pfx_kthread+0x10/0x10 [ 11.727007] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.727037] ? calculate_sigpending+0x7b/0xa0 [ 11.727059] ? __pfx_kthread+0x10/0x10 [ 11.727079] ret_from_fork+0x116/0x1d0 [ 11.727130] ? __pfx_kthread+0x10/0x10 [ 11.727150] ret_from_fork_asm+0x1a/0x30 [ 11.727189] </TASK> [ 11.727200] [ 11.735324] Allocated by task 197: [ 11.735675] kasan_save_stack+0x45/0x70 [ 11.735935] kasan_save_track+0x18/0x40 [ 11.736209] kasan_save_alloc_info+0x3b/0x50 [ 11.736433] __kasan_kmalloc+0xb7/0xc0 [ 11.736582] __kmalloc_cache_noprof+0x189/0x420 [ 11.736808] kmalloc_memmove_negative_size+0xac/0x330 [ 11.737040] kunit_try_run_case+0x1a5/0x480 [ 11.737211] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.737418] kthread+0x337/0x6f0 [ 11.737738] ret_from_fork+0x116/0x1d0 [ 11.737995] ret_from_fork_asm+0x1a/0x30 [ 11.738261] [ 11.738398] The buggy address belongs to the object at ffff8881027afb80 [ 11.738398] which belongs to the cache kmalloc-64 of size 64 [ 11.739008] The buggy address is located 4 bytes inside of [ 11.739008] 64-byte region [ffff8881027afb80, ffff8881027afbc0) [ 11.739651] [ 11.739796] The buggy address belongs to the physical page: [ 11.740046] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027af [ 11.740474] flags: 0x200000000000000(node=0|zone=2) [ 11.740754] page_type: f5(slab) [ 11.740938] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.741376] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.741673] page dumped because: kasan: bad access detected [ 11.741928] [ 11.742021] Memory state around the buggy address: [ 11.742288] ffff8881027afa80: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 11.742725] ffff8881027afb00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.743069] >ffff8881027afb80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.743440] ^ [ 11.743693] ffff8881027afc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.744064] ffff8881027afc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.744416] ==================================================================