Date
June 16, 2025, 7:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.420134] ================================================================== [ 19.420344] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.420946] Read of size 18446744073709551614 at addr fff00000c640b904 by task kunit_try_catch/189 [ 19.421440] [ 19.421548] CPU: 0 UID: 0 PID: 189 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250616 #1 PREEMPT [ 19.422331] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.422414] Hardware name: linux,dummy-virt (DT) [ 19.422508] Call trace: [ 19.422567] show_stack+0x20/0x38 (C) [ 19.422692] dump_stack_lvl+0x8c/0xd0 [ 19.422822] print_report+0x118/0x608 [ 19.422973] kasan_report+0xdc/0x128 [ 19.423109] kasan_check_range+0x100/0x1a8 [ 19.423259] __asan_memmove+0x3c/0x98 [ 19.423400] kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.423515] kunit_try_run_case+0x170/0x3f0 [ 19.423657] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.423816] kthread+0x328/0x630 [ 19.424090] ret_from_fork+0x10/0x20 [ 19.424211] [ 19.424255] Allocated by task 189: [ 19.424332] kasan_save_stack+0x3c/0x68 [ 19.424442] kasan_save_track+0x20/0x40 [ 19.424539] kasan_save_alloc_info+0x40/0x58 [ 19.424625] __kasan_kmalloc+0xd4/0xd8 [ 19.424701] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.424790] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 19.424906] kunit_try_run_case+0x170/0x3f0 [ 19.424997] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.425103] kthread+0x328/0x630 [ 19.425182] ret_from_fork+0x10/0x20 [ 19.425280] [ 19.425346] The buggy address belongs to the object at fff00000c640b900 [ 19.425346] which belongs to the cache kmalloc-64 of size 64 [ 19.425548] The buggy address is located 4 bytes inside of [ 19.425548] 64-byte region [fff00000c640b900, fff00000c640b940) [ 19.425745] [ 19.425825] The buggy address belongs to the physical page: [ 19.425910] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10640b [ 19.426037] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.426158] page_type: f5(slab) [ 19.426249] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.426353] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.426438] page dumped because: kasan: bad access detected [ 19.426507] [ 19.426548] Memory state around the buggy address: [ 19.426667] fff00000c640b800: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 19.426770] fff00000c640b880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.426882] >fff00000c640b900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 19.426984] ^ [ 19.427070] fff00000c640b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.427220] fff00000c640ba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.427331] ==================================================================
[ 11.624043] ================================================================== [ 11.624432] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 11.624676] Read of size 18446744073709551614 at addr ffff8881028c9284 by task kunit_try_catch/205 [ 11.625045] [ 11.625592] CPU: 1 UID: 0 PID: 205 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250616 #1 PREEMPT(voluntary) [ 11.625646] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.625658] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.625681] Call Trace: [ 11.625699] <TASK> [ 11.625718] dump_stack_lvl+0x73/0xb0 [ 11.625749] print_report+0xd1/0x650 [ 11.625770] ? __virt_addr_valid+0x1db/0x2d0 [ 11.625792] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.625815] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.625836] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.625882] kasan_report+0x141/0x180 [ 11.625904] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.626228] kasan_check_range+0x10c/0x1c0 [ 11.626260] __asan_memmove+0x27/0x70 [ 11.626279] kmalloc_memmove_negative_size+0x171/0x330 [ 11.626302] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.626326] ? __schedule+0x10cc/0x2b60 [ 11.626347] ? __pfx_read_tsc+0x10/0x10 [ 11.626368] ? ktime_get_ts64+0x86/0x230 [ 11.626421] kunit_try_run_case+0x1a5/0x480 [ 11.626445] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.626466] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.626487] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.626509] ? __kthread_parkme+0x82/0x180 [ 11.626528] ? preempt_count_sub+0x50/0x80 [ 11.626551] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.626573] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.626594] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.626615] kthread+0x337/0x6f0 [ 11.626634] ? trace_preempt_on+0x20/0xc0 [ 11.626658] ? __pfx_kthread+0x10/0x10 [ 11.626677] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.626696] ? calculate_sigpending+0x7b/0xa0 [ 11.626719] ? __pfx_kthread+0x10/0x10 [ 11.626739] ret_from_fork+0x116/0x1d0 [ 11.626757] ? __pfx_kthread+0x10/0x10 [ 11.626776] ret_from_fork_asm+0x1a/0x30 [ 11.626807] </TASK> [ 11.626818] [ 11.641544] Allocated by task 205: [ 11.641688] kasan_save_stack+0x45/0x70 [ 11.641832] kasan_save_track+0x18/0x40 [ 11.643009] kasan_save_alloc_info+0x3b/0x50 [ 11.643740] __kasan_kmalloc+0xb7/0xc0 [ 11.644331] __kmalloc_cache_noprof+0x189/0x420 [ 11.645042] kmalloc_memmove_negative_size+0xac/0x330 [ 11.645865] kunit_try_run_case+0x1a5/0x480 [ 11.646836] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.647477] kthread+0x337/0x6f0 [ 11.648104] ret_from_fork+0x116/0x1d0 [ 11.648667] ret_from_fork_asm+0x1a/0x30 [ 11.649225] [ 11.649396] The buggy address belongs to the object at ffff8881028c9280 [ 11.649396] which belongs to the cache kmalloc-64 of size 64 [ 11.651063] The buggy address is located 4 bytes inside of [ 11.651063] 64-byte region [ffff8881028c9280, ffff8881028c92c0) [ 11.652556] [ 11.652730] The buggy address belongs to the physical page: [ 11.653493] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1028c9 [ 11.654379] flags: 0x200000000000000(node=0|zone=2) [ 11.655049] page_type: f5(slab) [ 11.655414] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.655818] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.656764] page dumped because: kasan: bad access detected [ 11.657180] [ 11.657256] Memory state around the buggy address: [ 11.657626] ffff8881028c9180: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 11.658367] ffff8881028c9200: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.659327] >ffff8881028c9280: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.659911] ^ [ 11.660255] ffff8881028c9300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.661328] ffff8881028c9380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.662290] ==================================================================