Date
July 10, 2025, 9:07 a.m.
Environment | |
---|---|
qemu-arm64 | |
qemu-x86_64 |
[ 29.537434] ================================================================== [ 29.537508] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 29.537846] Read of size 18446744073709551614 at addr fff00000c99b0684 by task kunit_try_catch/211 [ 29.538051] [ 29.538318] CPU: 0 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250710 #1 PREEMPT [ 29.538757] Tainted: [B]=BAD_PAGE, [N]=TEST [ 29.538788] Hardware name: linux,dummy-virt (DT) [ 29.538821] Call trace: [ 29.538844] show_stack+0x20/0x38 (C) [ 29.538898] dump_stack_lvl+0x8c/0xd0 [ 29.538947] print_report+0x118/0x5d0 [ 29.538989] kasan_report+0xdc/0x128 [ 29.539377] kasan_check_range+0x100/0x1a8 [ 29.539424] __asan_memmove+0x3c/0x98 [ 29.539710] kmalloc_memmove_negative_size+0x154/0x2e0 [ 29.539779] kunit_try_run_case+0x170/0x3f0 [ 29.540066] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.540415] kthread+0x328/0x630 [ 29.540467] ret_from_fork+0x10/0x20 [ 29.540516] [ 29.540535] Allocated by task 211: [ 29.540983] kasan_save_stack+0x3c/0x68 [ 29.541097] kasan_save_track+0x20/0x40 [ 29.541153] kasan_save_alloc_info+0x40/0x58 [ 29.541469] __kasan_kmalloc+0xd4/0xd8 [ 29.541515] __kmalloc_cache_noprof+0x16c/0x3c0 [ 29.541555] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 29.542006] kunit_try_run_case+0x170/0x3f0 [ 29.542367] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.542624] kthread+0x328/0x630 [ 29.542798] ret_from_fork+0x10/0x20 [ 29.542836] [ 29.542857] The buggy address belongs to the object at fff00000c99b0680 [ 29.542857] which belongs to the cache kmalloc-64 of size 64 [ 29.542918] The buggy address is located 4 bytes inside of [ 29.542918] 64-byte region [fff00000c99b0680, fff00000c99b06c0) [ 29.542981] [ 29.543001] The buggy address belongs to the physical page: [ 29.543034] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1099b0 [ 29.543172] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 29.543228] page_type: f5(slab) [ 29.543582] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 29.543853] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 29.544332] page dumped because: kasan: bad access detected [ 29.544366] [ 29.544385] Memory state around the buggy address: [ 29.544419] fff00000c99b0580: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 29.544464] fff00000c99b0600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 29.544508] >fff00000c99b0680: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 29.544551] ^ [ 29.544578] fff00000c99b0700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.544622] fff00000c99b0780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.544661] ==================================================================
[ 25.229891] ================================================================== [ 25.230333] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 25.230661] Read of size 18446744073709551614 at addr ffff888105847884 by task kunit_try_catch/228 [ 25.231088] [ 25.231200] CPU: 0 UID: 0 PID: 228 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250710 #1 PREEMPT(voluntary) [ 25.231249] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.231261] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.231282] Call Trace: [ 25.231294] <TASK> [ 25.231312] dump_stack_lvl+0x73/0xb0 [ 25.231339] print_report+0xd1/0x610 [ 25.231361] ? __virt_addr_valid+0x1db/0x2d0 [ 25.231385] ? kmalloc_memmove_negative_size+0x171/0x330 [ 25.231409] ? kasan_complete_mode_report_info+0x2a/0x200 [ 25.231434] ? kmalloc_memmove_negative_size+0x171/0x330 [ 25.231611] kasan_report+0x141/0x180 [ 25.231643] ? kmalloc_memmove_negative_size+0x171/0x330 [ 25.231672] kasan_check_range+0x10c/0x1c0 [ 25.231695] __asan_memmove+0x27/0x70 [ 25.231729] kmalloc_memmove_negative_size+0x171/0x330 [ 25.231754] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 25.231836] ? __schedule+0x10cc/0x2b60 [ 25.231864] ? __pfx_read_tsc+0x10/0x10 [ 25.231886] ? ktime_get_ts64+0x86/0x230 [ 25.231910] kunit_try_run_case+0x1a5/0x480 [ 25.231932] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.231952] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.231974] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.231997] ? __kthread_parkme+0x82/0x180 [ 25.232017] ? preempt_count_sub+0x50/0x80 [ 25.232041] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.232062] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.232086] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.232110] kthread+0x337/0x6f0 [ 25.232130] ? trace_preempt_on+0x20/0xc0 [ 25.232152] ? __pfx_kthread+0x10/0x10 [ 25.232174] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.232195] ? calculate_sigpending+0x7b/0xa0 [ 25.232218] ? __pfx_kthread+0x10/0x10 [ 25.232239] ret_from_fork+0x116/0x1d0 [ 25.232259] ? __pfx_kthread+0x10/0x10 [ 25.232279] ret_from_fork_asm+0x1a/0x30 [ 25.232310] </TASK> [ 25.232322] [ 25.241507] Allocated by task 228: [ 25.241723] kasan_save_stack+0x45/0x70 [ 25.243264] kasan_save_track+0x18/0x40 [ 25.243499] kasan_save_alloc_info+0x3b/0x50 [ 25.243664] __kasan_kmalloc+0xb7/0xc0 [ 25.243871] __kmalloc_cache_noprof+0x189/0x420 [ 25.244105] kmalloc_memmove_negative_size+0xac/0x330 [ 25.244342] kunit_try_run_case+0x1a5/0x480 [ 25.244533] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.246288] kthread+0x337/0x6f0 [ 25.246765] ret_from_fork+0x116/0x1d0 [ 25.247292] ret_from_fork_asm+0x1a/0x30 [ 25.248260] [ 25.248631] The buggy address belongs to the object at ffff888105847880 [ 25.248631] which belongs to the cache kmalloc-64 of size 64 [ 25.249738] The buggy address is located 4 bytes inside of [ 25.249738] 64-byte region [ffff888105847880, ffff8881058478c0) [ 25.250757] [ 25.250938] The buggy address belongs to the physical page: [ 25.251289] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105847 [ 25.251745] flags: 0x200000000000000(node=0|zone=2) [ 25.252236] page_type: f5(slab) [ 25.252441] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 25.252988] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 25.253337] page dumped because: kasan: bad access detected [ 25.253739] [ 25.253912] Memory state around the buggy address: [ 25.254303] ffff888105847780: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 25.254822] ffff888105847800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 25.255145] >ffff888105847880: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 25.255422] ^ [ 25.255613] ffff888105847900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.256012] ffff888105847980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.256276] ==================================================================