Date
July 10, 2025, 6:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.972480] ================================================================== [ 16.972548] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.972606] Read of size 18446744073709551614 at addr fff00000c5a1d904 by task kunit_try_catch/180 [ 16.972682] [ 16.972715] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.972797] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.972822] Hardware name: linux,dummy-virt (DT) [ 16.972851] Call trace: [ 16.972893] show_stack+0x20/0x38 (C) [ 16.972944] dump_stack_lvl+0x8c/0xd0 [ 16.973003] print_report+0x118/0x608 [ 16.973056] kasan_report+0xdc/0x128 [ 16.973101] kasan_check_range+0x100/0x1a8 [ 16.973155] __asan_memmove+0x3c/0x98 [ 16.973199] kmalloc_memmove_negative_size+0x154/0x2e0 [ 16.973256] kunit_try_run_case+0x170/0x3f0 [ 16.973314] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.974250] kthread+0x328/0x630 [ 16.974351] ret_from_fork+0x10/0x20 [ 16.974459] [ 16.974539] Allocated by task 180: [ 16.974880] kasan_save_stack+0x3c/0x68 [ 16.974963] kasan_save_track+0x20/0x40 [ 16.975006] kasan_save_alloc_info+0x40/0x58 [ 16.975047] __kasan_kmalloc+0xd4/0xd8 [ 16.975083] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.975304] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 16.975505] kunit_try_run_case+0x170/0x3f0 [ 16.975735] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.975930] kthread+0x328/0x630 [ 16.976126] ret_from_fork+0x10/0x20 [ 16.976371] [ 16.976426] The buggy address belongs to the object at fff00000c5a1d900 [ 16.976426] which belongs to the cache kmalloc-64 of size 64 [ 16.976670] The buggy address is located 4 bytes inside of [ 16.976670] 64-byte region [fff00000c5a1d900, fff00000c5a1d940) [ 16.976818] [ 16.976987] The buggy address belongs to the physical page: [ 16.977018] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a1d [ 16.977504] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.977628] page_type: f5(slab) [ 16.977856] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 16.978412] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 16.980055] page dumped because: kasan: bad access detected [ 16.980296] [ 16.980374] Memory state around the buggy address: [ 16.980409] fff00000c5a1d800: 00 00 00 00 05 fc fc fc fc fc fc fc fc fc fc fc [ 16.980679] fff00000c5a1d880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.980926] >fff00000c5a1d900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 16.981105] ^ [ 16.981255] fff00000c5a1d980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.981349] fff00000c5a1da00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.981735] ==================================================================
[ 12.684766] ================================================================== [ 12.685351] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.685700] Read of size 18446744073709551614 at addr ffff8881039ff584 by task kunit_try_catch/197 [ 12.686384] [ 12.686503] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.686546] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.686557] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.686577] Call Trace: [ 12.686589] <TASK> [ 12.686603] dump_stack_lvl+0x73/0xb0 [ 12.686658] print_report+0xd1/0x650 [ 12.686681] ? __virt_addr_valid+0x1db/0x2d0 [ 12.686721] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.686747] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.686770] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.686816] kasan_report+0x141/0x180 [ 12.686838] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.686868] kasan_check_range+0x10c/0x1c0 [ 12.686891] __asan_memmove+0x27/0x70 [ 12.686910] kmalloc_memmove_negative_size+0x171/0x330 [ 12.686964] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.686993] ? __schedule+0x10cc/0x2b60 [ 12.687016] ? __pfx_read_tsc+0x10/0x10 [ 12.687070] ? ktime_get_ts64+0x86/0x230 [ 12.687097] kunit_try_run_case+0x1a5/0x480 [ 12.687190] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.687214] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.687238] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.687261] ? __kthread_parkme+0x82/0x180 [ 12.687281] ? preempt_count_sub+0x50/0x80 [ 12.687306] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.687330] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.687353] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.687378] kthread+0x337/0x6f0 [ 12.687397] ? trace_preempt_on+0x20/0xc0 [ 12.687420] ? __pfx_kthread+0x10/0x10 [ 12.687440] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.687461] ? calculate_sigpending+0x7b/0xa0 [ 12.687485] ? __pfx_kthread+0x10/0x10 [ 12.687506] ret_from_fork+0x116/0x1d0 [ 12.687524] ? __pfx_kthread+0x10/0x10 [ 12.687544] ret_from_fork_asm+0x1a/0x30 [ 12.687575] </TASK> [ 12.687584] [ 12.695989] Allocated by task 197: [ 12.696151] kasan_save_stack+0x45/0x70 [ 12.696373] kasan_save_track+0x18/0x40 [ 12.696560] kasan_save_alloc_info+0x3b/0x50 [ 12.696755] __kasan_kmalloc+0xb7/0xc0 [ 12.696947] __kmalloc_cache_noprof+0x189/0x420 [ 12.697216] kmalloc_memmove_negative_size+0xac/0x330 [ 12.697475] kunit_try_run_case+0x1a5/0x480 [ 12.697688] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.698027] kthread+0x337/0x6f0 [ 12.698243] ret_from_fork+0x116/0x1d0 [ 12.698373] ret_from_fork_asm+0x1a/0x30 [ 12.698511] [ 12.698582] The buggy address belongs to the object at ffff8881039ff580 [ 12.698582] which belongs to the cache kmalloc-64 of size 64 [ 12.699069] The buggy address is located 4 bytes inside of [ 12.699069] 64-byte region [ffff8881039ff580, ffff8881039ff5c0) [ 12.699764] [ 12.700001] The buggy address belongs to the physical page: [ 12.700350] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039ff [ 12.700749] flags: 0x200000000000000(node=0|zone=2) [ 12.701264] page_type: f5(slab) [ 12.701436] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.701691] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.701916] page dumped because: kasan: bad access detected [ 12.702097] [ 12.702166] Memory state around the buggy address: [ 12.702321] ffff8881039ff480: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 12.702715] ffff8881039ff500: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.703098] >ffff8881039ff580: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.703446] ^ [ 12.703634] ffff8881039ff600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.704018] ffff8881039ff680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.704564] ==================================================================