Date
July 1, 2025, 3:08 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.044745] ================================================================== [ 17.044813] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 17.044870] Read of size 18446744073709551614 at addr fff00000c57c9904 by task kunit_try_catch/181 [ 17.044950] [ 17.044986] CPU: 1 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 17.045069] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.045095] Hardware name: linux,dummy-virt (DT) [ 17.045125] Call trace: [ 17.045148] show_stack+0x20/0x38 (C) [ 17.045197] dump_stack_lvl+0x8c/0xd0 [ 17.045245] print_report+0x118/0x608 [ 17.045298] kasan_report+0xdc/0x128 [ 17.045503] kasan_check_range+0x100/0x1a8 [ 17.045617] __asan_memmove+0x3c/0x98 [ 17.045677] kmalloc_memmove_negative_size+0x154/0x2e0 [ 17.045727] kunit_try_run_case+0x170/0x3f0 [ 17.045796] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.045847] kthread+0x328/0x630 [ 17.045888] ret_from_fork+0x10/0x20 [ 17.045935] [ 17.045954] Allocated by task 181: [ 17.045981] kasan_save_stack+0x3c/0x68 [ 17.046021] kasan_save_track+0x20/0x40 [ 17.046058] kasan_save_alloc_info+0x40/0x58 [ 17.046097] __kasan_kmalloc+0xd4/0xd8 [ 17.046133] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.046172] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 17.046212] kunit_try_run_case+0x170/0x3f0 [ 17.046248] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.046291] kthread+0x328/0x630 [ 17.046322] ret_from_fork+0x10/0x20 [ 17.046357] [ 17.046376] The buggy address belongs to the object at fff00000c57c9900 [ 17.046376] which belongs to the cache kmalloc-64 of size 64 [ 17.046434] The buggy address is located 4 bytes inside of [ 17.046434] 64-byte region [fff00000c57c9900, fff00000c57c9940) [ 17.046492] [ 17.046511] The buggy address belongs to the physical page: [ 17.046542] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1057c9 [ 17.046606] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.046653] page_type: f5(slab) [ 17.046692] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 17.046741] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 17.046780] page dumped because: kasan: bad access detected [ 17.046811] [ 17.046828] Memory state around the buggy address: [ 17.046860] fff00000c57c9800: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 17.046904] fff00000c57c9880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 17.046947] >fff00000c57c9900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 17.046985] ^ [ 17.047011] fff00000c57c9980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.047054] fff00000c57c9a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.047092] ==================================================================
[ 11.793098] ================================================================== [ 11.793836] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 11.794392] Read of size 18446744073709551614 at addr ffff8881033ab404 by task kunit_try_catch/197 [ 11.795119] [ 11.795249] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.795300] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.795312] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.795335] Call Trace: [ 11.795348] <TASK> [ 11.795369] dump_stack_lvl+0x73/0xb0 [ 11.795402] print_report+0xd1/0x650 [ 11.795424] ? __virt_addr_valid+0x1db/0x2d0 [ 11.795448] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.795471] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.795534] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.795581] kasan_report+0x141/0x180 [ 11.795604] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.795631] kasan_check_range+0x10c/0x1c0 [ 11.795653] __asan_memmove+0x27/0x70 [ 11.795672] kmalloc_memmove_negative_size+0x171/0x330 [ 11.795695] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.795719] ? __schedule+0x10cc/0x2b60 [ 11.795741] ? __pfx_read_tsc+0x10/0x10 [ 11.795763] ? ktime_get_ts64+0x86/0x230 [ 11.795788] kunit_try_run_case+0x1a5/0x480 [ 11.795813] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.795834] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.795856] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.795877] ? __kthread_parkme+0x82/0x180 [ 11.795898] ? preempt_count_sub+0x50/0x80 [ 11.795921] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.795943] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.795964] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.795986] kthread+0x337/0x6f0 [ 11.796004] ? trace_preempt_on+0x20/0xc0 [ 11.796039] ? __pfx_kthread+0x10/0x10 [ 11.796058] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.796078] ? calculate_sigpending+0x7b/0xa0 [ 11.796101] ? __pfx_kthread+0x10/0x10 [ 11.796121] ret_from_fork+0x116/0x1d0 [ 11.796138] ? __pfx_kthread+0x10/0x10 [ 11.796165] ret_from_fork_asm+0x1a/0x30 [ 11.796195] </TASK> [ 11.796206] [ 11.807065] Allocated by task 197: [ 11.807204] kasan_save_stack+0x45/0x70 [ 11.807411] kasan_save_track+0x18/0x40 [ 11.807635] kasan_save_alloc_info+0x3b/0x50 [ 11.807886] __kasan_kmalloc+0xb7/0xc0 [ 11.808226] __kmalloc_cache_noprof+0x189/0x420 [ 11.808463] kmalloc_memmove_negative_size+0xac/0x330 [ 11.808754] kunit_try_run_case+0x1a5/0x480 [ 11.808979] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.809171] kthread+0x337/0x6f0 [ 11.809290] ret_from_fork+0x116/0x1d0 [ 11.809437] ret_from_fork_asm+0x1a/0x30 [ 11.809635] [ 11.809864] The buggy address belongs to the object at ffff8881033ab400 [ 11.809864] which belongs to the cache kmalloc-64 of size 64 [ 11.810414] The buggy address is located 4 bytes inside of [ 11.810414] 64-byte region [ffff8881033ab400, ffff8881033ab440) [ 11.811097] [ 11.811181] The buggy address belongs to the physical page: [ 11.811406] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1033ab [ 11.811892] flags: 0x200000000000000(node=0|zone=2) [ 11.812072] page_type: f5(slab) [ 11.812404] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.812811] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.813137] page dumped because: kasan: bad access detected [ 11.813370] [ 11.813459] Memory state around the buggy address: [ 11.814239] ffff8881033ab300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.814493] ffff8881033ab380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.815146] >ffff8881033ab400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.815444] ^ [ 11.815597] ffff8881033ab480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.815946] ffff8881033ab500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.816257] ==================================================================