Date
July 6, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.136674] ================================================================== [ 18.136738] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.137181] Read of size 18446744073709551614 at addr fff00000c641e984 by task kunit_try_catch/180 [ 18.137447] [ 18.137566] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.137935] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.137995] Hardware name: linux,dummy-virt (DT) [ 18.138106] Call trace: [ 18.138168] show_stack+0x20/0x38 (C) [ 18.138349] dump_stack_lvl+0x8c/0xd0 [ 18.138409] print_report+0x118/0x608 [ 18.138560] kasan_report+0xdc/0x128 [ 18.138666] kasan_check_range+0x100/0x1a8 [ 18.139014] __asan_memmove+0x3c/0x98 [ 18.139129] kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.139534] kunit_try_run_case+0x170/0x3f0 [ 18.139679] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.139786] kthread+0x328/0x630 [ 18.139938] ret_from_fork+0x10/0x20 [ 18.141009] [ 18.141033] Allocated by task 180: [ 18.141483] kasan_save_stack+0x3c/0x68 [ 18.141632] kasan_save_track+0x20/0x40 [ 18.141753] kasan_save_alloc_info+0x40/0x58 [ 18.141958] __kasan_kmalloc+0xd4/0xd8 [ 18.142005] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.143117] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 18.143226] kunit_try_run_case+0x170/0x3f0 [ 18.143320] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.143395] kthread+0x328/0x630 [ 18.143529] ret_from_fork+0x10/0x20 [ 18.143568] [ 18.143870] The buggy address belongs to the object at fff00000c641e980 [ 18.143870] which belongs to the cache kmalloc-64 of size 64 [ 18.144109] The buggy address is located 4 bytes inside of [ 18.144109] 64-byte region [fff00000c641e980, fff00000c641e9c0) [ 18.144827] [ 18.144904] The buggy address belongs to the physical page: [ 18.145044] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10641e [ 18.145131] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.145641] page_type: f5(slab) [ 18.145866] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 18.146067] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.146246] page dumped because: kasan: bad access detected [ 18.146351] [ 18.146485] Memory state around the buggy address: [ 18.146590] fff00000c641e880: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 18.146634] fff00000c641e900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.146676] >fff00000c641e980: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 18.146713] ^ [ 18.146742] fff00000c641ea00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.147109] fff00000c641ea80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.147260] ==================================================================
[ 11.783431] ================================================================== [ 11.784979] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 11.786218] Read of size 18446744073709551614 at addr ffff888102b17f04 by task kunit_try_catch/197 [ 11.786589] [ 11.786716] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.786764] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.786776] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.786799] Call Trace: [ 11.786813] <TASK> [ 11.786876] dump_stack_lvl+0x73/0xb0 [ 11.786911] print_report+0xd1/0x650 [ 11.786947] ? __virt_addr_valid+0x1db/0x2d0 [ 11.786971] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.786995] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.787017] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.787059] kasan_report+0x141/0x180 [ 11.787081] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.787115] kasan_check_range+0x10c/0x1c0 [ 11.787138] __asan_memmove+0x27/0x70 [ 11.787157] kmalloc_memmove_negative_size+0x171/0x330 [ 11.787182] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.787207] ? __schedule+0x10cc/0x2b60 [ 11.787229] ? __pfx_read_tsc+0x10/0x10 [ 11.787250] ? ktime_get_ts64+0x86/0x230 [ 11.787276] kunit_try_run_case+0x1a5/0x480 [ 11.787301] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.787323] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.787347] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.787369] ? __kthread_parkme+0x82/0x180 [ 11.787390] ? preempt_count_sub+0x50/0x80 [ 11.787414] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.787437] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.787459] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.787482] kthread+0x337/0x6f0 [ 11.787501] ? trace_preempt_on+0x20/0xc0 [ 11.787524] ? __pfx_kthread+0x10/0x10 [ 11.787544] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.787564] ? calculate_sigpending+0x7b/0xa0 [ 11.787590] ? __pfx_kthread+0x10/0x10 [ 11.787610] ret_from_fork+0x116/0x1d0 [ 11.787629] ? __pfx_kthread+0x10/0x10 [ 11.787649] ret_from_fork_asm+0x1a/0x30 [ 11.787679] </TASK> [ 11.787691] [ 11.795735] Allocated by task 197: [ 11.795920] kasan_save_stack+0x45/0x70 [ 11.796216] kasan_save_track+0x18/0x40 [ 11.796369] kasan_save_alloc_info+0x3b/0x50 [ 11.796546] __kasan_kmalloc+0xb7/0xc0 [ 11.796896] __kmalloc_cache_noprof+0x189/0x420 [ 11.797083] kmalloc_memmove_negative_size+0xac/0x330 [ 11.797252] kunit_try_run_case+0x1a5/0x480 [ 11.797454] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.797706] kthread+0x337/0x6f0 [ 11.797873] ret_from_fork+0x116/0x1d0 [ 11.798050] ret_from_fork_asm+0x1a/0x30 [ 11.798223] [ 11.798297] The buggy address belongs to the object at ffff888102b17f00 [ 11.798297] which belongs to the cache kmalloc-64 of size 64 [ 11.798719] The buggy address is located 4 bytes inside of [ 11.798719] 64-byte region [ffff888102b17f00, ffff888102b17f40) [ 11.799625] [ 11.799717] The buggy address belongs to the physical page: [ 11.799987] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b17 [ 11.800286] flags: 0x200000000000000(node=0|zone=2) [ 11.800452] page_type: f5(slab) [ 11.800592] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.800947] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.801312] page dumped because: kasan: bad access detected [ 11.801583] [ 11.801731] Memory state around the buggy address: [ 11.801938] ffff888102b17e00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.802226] ffff888102b17e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.802459] >ffff888102b17f00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.802775] ^ [ 11.802950] ffff888102b17f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.803313] ffff888102b18000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.803562] ==================================================================