Date
July 12, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.579573] ================================================================== [ 19.579752] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.579898] Read of size 18446744073709551614 at addr fff00000c5999d04 by task kunit_try_catch/181 [ 19.580065] [ 19.580149] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.580355] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.580430] Hardware name: linux,dummy-virt (DT) [ 19.580569] Call trace: [ 19.580633] show_stack+0x20/0x38 (C) [ 19.580762] dump_stack_lvl+0x8c/0xd0 [ 19.580883] print_report+0x118/0x608 [ 19.580992] kasan_report+0xdc/0x128 [ 19.581096] kasan_check_range+0x100/0x1a8 [ 19.582065] __asan_memmove+0x3c/0x98 [ 19.582280] kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.583520] kunit_try_run_case+0x170/0x3f0 [ 19.583863] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.584435] kthread+0x328/0x630 [ 19.584569] ret_from_fork+0x10/0x20 [ 19.584718] [ 19.584763] Allocated by task 181: [ 19.584844] kasan_save_stack+0x3c/0x68 [ 19.584942] kasan_save_track+0x20/0x40 [ 19.585028] kasan_save_alloc_info+0x40/0x58 [ 19.585117] __kasan_kmalloc+0xd4/0xd8 [ 19.586520] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.587322] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 19.587639] kunit_try_run_case+0x170/0x3f0 [ 19.587987] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.588170] kthread+0x328/0x630 [ 19.588615] ret_from_fork+0x10/0x20 [ 19.588719] [ 19.588864] The buggy address belongs to the object at fff00000c5999d00 [ 19.588864] which belongs to the cache kmalloc-64 of size 64 [ 19.589172] The buggy address is located 4 bytes inside of [ 19.589172] 64-byte region [fff00000c5999d00, fff00000c5999d40) [ 19.589538] [ 19.589592] The buggy address belongs to the physical page: [ 19.589666] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105999 [ 19.590448] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.590789] page_type: f5(slab) [ 19.591018] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.591226] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.592093] page dumped because: kasan: bad access detected [ 19.593316] [ 19.593566] Memory state around the buggy address: [ 19.593754] fff00000c5999c00: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 19.594052] fff00000c5999c80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.594162] >fff00000c5999d00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 19.594236] ^ [ 19.594295] fff00000c5999d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.594386] fff00000c5999e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.594476] ==================================================================
[ 12.815742] ================================================================== [ 12.816276] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.816580] Read of size 18446744073709551614 at addr ffff888102658984 by task kunit_try_catch/198 [ 12.817101] [ 12.817545] CPU: 1 UID: 0 PID: 198 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.817592] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.817603] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.817623] Call Trace: [ 12.817635] <TASK> [ 12.817856] dump_stack_lvl+0x73/0xb0 [ 12.817892] print_report+0xd1/0x650 [ 12.817915] ? __virt_addr_valid+0x1db/0x2d0 [ 12.817938] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.817963] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.817986] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.818036] kasan_report+0x141/0x180 [ 12.818058] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.818088] kasan_check_range+0x10c/0x1c0 [ 12.818111] __asan_memmove+0x27/0x70 [ 12.818131] kmalloc_memmove_negative_size+0x171/0x330 [ 12.818156] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.818183] ? __schedule+0x10cc/0x2b60 [ 12.818205] ? __pfx_read_tsc+0x10/0x10 [ 12.818225] ? ktime_get_ts64+0x86/0x230 [ 12.818249] kunit_try_run_case+0x1a5/0x480 [ 12.818273] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.818295] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.818318] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.818342] ? __kthread_parkme+0x82/0x180 [ 12.818368] ? preempt_count_sub+0x50/0x80 [ 12.818392] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.818416] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.818441] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.818466] kthread+0x337/0x6f0 [ 12.818485] ? trace_preempt_on+0x20/0xc0 [ 12.818508] ? __pfx_kthread+0x10/0x10 [ 12.818528] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.818549] ? calculate_sigpending+0x7b/0xa0 [ 12.818573] ? __pfx_kthread+0x10/0x10 [ 12.818594] ret_from_fork+0x116/0x1d0 [ 12.818613] ? __pfx_kthread+0x10/0x10 [ 12.818633] ret_from_fork_asm+0x1a/0x30 [ 12.818812] </TASK> [ 12.818825] [ 12.826825] Allocated by task 198: [ 12.827027] kasan_save_stack+0x45/0x70 [ 12.827231] kasan_save_track+0x18/0x40 [ 12.827423] kasan_save_alloc_info+0x3b/0x50 [ 12.827615] __kasan_kmalloc+0xb7/0xc0 [ 12.827855] __kmalloc_cache_noprof+0x189/0x420 [ 12.828018] kmalloc_memmove_negative_size+0xac/0x330 [ 12.828219] kunit_try_run_case+0x1a5/0x480 [ 12.828429] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.828681] kthread+0x337/0x6f0 [ 12.829041] ret_from_fork+0x116/0x1d0 [ 12.829200] ret_from_fork_asm+0x1a/0x30 [ 12.829392] [ 12.829462] The buggy address belongs to the object at ffff888102658980 [ 12.829462] which belongs to the cache kmalloc-64 of size 64 [ 12.829979] The buggy address is located 4 bytes inside of [ 12.829979] 64-byte region [ffff888102658980, ffff8881026589c0) [ 12.830465] [ 12.830553] The buggy address belongs to the physical page: [ 12.830778] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102658 [ 12.831074] flags: 0x200000000000000(node=0|zone=2) [ 12.831291] page_type: f5(slab) [ 12.831460] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.831815] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.832042] page dumped because: kasan: bad access detected [ 12.832212] [ 12.832279] Memory state around the buggy address: [ 12.832434] ffff888102658880: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 12.832754] ffff888102658900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.833180] >ffff888102658980: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.833488] ^ [ 12.833696] ffff888102658a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.834201] ffff888102658a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.834431] ==================================================================