Date
July 25, 2025, 3:13 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.464400] ================================================================== [ 32.464476] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 32.464537] Read of size 18446744073709551614 at addr fff00000c9b0ba04 by task kunit_try_catch/212 [ 32.464619] [ 32.464690] CPU: 1 UID: 0 PID: 212 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250725 #1 PREEMPT [ 32.464782] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 32.464824] Hardware name: linux,dummy-virt (DT) [ 32.464855] Call trace: [ 32.464878] show_stack+0x20/0x38 (C) [ 32.464936] dump_stack_lvl+0x8c/0xd0 [ 32.464982] print_report+0x118/0x5e8 [ 32.465036] kasan_report+0xdc/0x128 [ 32.465079] kasan_check_range+0x100/0x1a8 [ 32.465124] __asan_memmove+0x3c/0x98 [ 32.465172] kmalloc_memmove_negative_size+0x154/0x2e0 [ 32.465232] kunit_try_run_case+0x170/0x3f0 [ 32.465279] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.465339] kthread+0x328/0x630 [ 32.465383] ret_from_fork+0x10/0x20 [ 32.465437] [ 32.465457] Allocated by task 212: [ 32.465494] kasan_save_stack+0x3c/0x68 [ 32.465544] kasan_save_track+0x20/0x40 [ 32.465584] kasan_save_alloc_info+0x40/0x58 [ 32.465623] __kasan_kmalloc+0xd4/0xd8 [ 32.466046] __kmalloc_cache_noprof+0x16c/0x3c0 [ 32.466581] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 32.466674] kunit_try_run_case+0x170/0x3f0 [ 32.466763] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.466809] kthread+0x328/0x630 [ 32.466899] ret_from_fork+0x10/0x20 [ 32.466988] [ 32.467020] The buggy address belongs to the object at fff00000c9b0ba00 [ 32.467020] which belongs to the cache kmalloc-64 of size 64 [ 32.467266] The buggy address is located 4 bytes inside of [ 32.467266] 64-byte region [fff00000c9b0ba00, fff00000c9b0ba40) [ 32.467546] [ 32.467602] The buggy address belongs to the physical page: [ 32.467767] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b0b [ 32.467874] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.468074] page_type: f5(slab) [ 32.468149] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 32.468671] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 32.468753] page dumped because: kasan: bad access detected [ 32.468816] [ 32.469079] Memory state around the buggy address: [ 32.469131] fff00000c9b0b900: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 32.469383] fff00000c9b0b980: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.469590] >fff00000c9b0ba00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 32.470127] ^ [ 32.470224] fff00000c9b0ba80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.470409] fff00000c9b0bb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.470483] ==================================================================
[ 25.953048] ================================================================== [ 25.953512] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 25.954048] Read of size 18446744073709551614 at addr ffff888106248e84 by task kunit_try_catch/229 [ 25.954897] [ 25.955113] CPU: 1 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) [ 25.955165] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.955178] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.955199] Call Trace: [ 25.955212] <TASK> [ 25.955226] dump_stack_lvl+0x73/0xb0 [ 25.955256] print_report+0xd1/0x640 [ 25.955279] ? __virt_addr_valid+0x1db/0x2d0 [ 25.955303] ? kmalloc_memmove_negative_size+0x171/0x330 [ 25.955327] ? kasan_complete_mode_report_info+0x2a/0x200 [ 25.955353] ? kmalloc_memmove_negative_size+0x171/0x330 [ 25.955683] kasan_report+0x141/0x180 [ 25.955720] ? kmalloc_memmove_negative_size+0x171/0x330 [ 25.955751] kasan_check_range+0x10c/0x1c0 [ 25.955775] __asan_memmove+0x27/0x70 [ 25.955867] kmalloc_memmove_negative_size+0x171/0x330 [ 25.955893] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 25.955922] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 25.955963] kunit_try_run_case+0x1a5/0x480 [ 25.955988] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.956011] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.956034] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.956061] ? __kthread_parkme+0x82/0x180 [ 25.956082] ? preempt_count_sub+0x50/0x80 [ 25.956105] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.956129] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.956153] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.956177] kthread+0x337/0x6f0 [ 25.956197] ? trace_preempt_on+0x20/0xc0 [ 25.956221] ? __pfx_kthread+0x10/0x10 [ 25.956242] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.956266] ? calculate_sigpending+0x7b/0xa0 [ 25.956289] ? __pfx_kthread+0x10/0x10 [ 25.956311] ret_from_fork+0x116/0x1d0 [ 25.956331] ? __pfx_kthread+0x10/0x10 [ 25.956351] ret_from_fork_asm+0x1a/0x30 [ 25.956382] </TASK> [ 25.956394] [ 25.966616] Allocated by task 229: [ 25.967134] kasan_save_stack+0x45/0x70 [ 25.967407] kasan_save_track+0x18/0x40 [ 25.967592] kasan_save_alloc_info+0x3b/0x50 [ 25.967783] __kasan_kmalloc+0xb7/0xc0 [ 25.968179] __kmalloc_cache_noprof+0x189/0x420 [ 25.968475] kmalloc_memmove_negative_size+0xac/0x330 [ 25.968667] kunit_try_run_case+0x1a5/0x480 [ 25.969182] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.969437] kthread+0x337/0x6f0 [ 25.969584] ret_from_fork+0x116/0x1d0 [ 25.969763] ret_from_fork_asm+0x1a/0x30 [ 25.970319] [ 25.970422] The buggy address belongs to the object at ffff888106248e80 [ 25.970422] which belongs to the cache kmalloc-64 of size 64 [ 25.971170] The buggy address is located 4 bytes inside of [ 25.971170] 64-byte region [ffff888106248e80, ffff888106248ec0) [ 25.971704] [ 25.971959] The buggy address belongs to the physical page: [ 25.972339] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106248 [ 25.972644] flags: 0x200000000000000(node=0|zone=2) [ 25.973104] page_type: f5(slab) [ 25.973253] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 25.973594] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 25.973918] page dumped because: kasan: bad access detected [ 25.974558] [ 25.974642] Memory state around the buggy address: [ 25.974870] ffff888106248d80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 25.975478] ffff888106248e00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 25.975897] >ffff888106248e80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 25.976242] ^ [ 25.976545] ffff888106248f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.976854] ffff888106248f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.977323] ==================================================================