Date
July 1, 2025, 11:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.458813] ================================================================== [ 18.458911] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.458985] Read of size 18446744073709551614 at addr fff00000c76fca04 by task kunit_try_catch/181 [ 18.459074] [ 18.459116] CPU: 1 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.459223] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.459252] Hardware name: linux,dummy-virt (DT) [ 18.459287] Call trace: [ 18.459312] show_stack+0x20/0x38 (C) [ 18.459392] dump_stack_lvl+0x8c/0xd0 [ 18.459445] print_report+0x118/0x608 [ 18.459496] kasan_report+0xdc/0x128 [ 18.459542] kasan_check_range+0x100/0x1a8 [ 18.459590] __asan_memmove+0x3c/0x98 [ 18.459634] kmalloc_memmove_negative_size+0x154/0x2e0 [ 18.459685] kunit_try_run_case+0x170/0x3f0 [ 18.459735] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.459789] kthread+0x328/0x630 [ 18.459844] ret_from_fork+0x10/0x20 [ 18.459895] [ 18.459914] Allocated by task 181: [ 18.459951] kasan_save_stack+0x3c/0x68 [ 18.460000] kasan_save_track+0x20/0x40 [ 18.460047] kasan_save_alloc_info+0x40/0x58 [ 18.460089] __kasan_kmalloc+0xd4/0xd8 [ 18.460153] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.460196] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 18.460238] kunit_try_run_case+0x170/0x3f0 [ 18.460277] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.460324] kthread+0x328/0x630 [ 18.460385] ret_from_fork+0x10/0x20 [ 18.460427] [ 18.460448] The buggy address belongs to the object at fff00000c76fca00 [ 18.460448] which belongs to the cache kmalloc-64 of size 64 [ 18.460511] The buggy address is located 4 bytes inside of [ 18.460511] 64-byte region [fff00000c76fca00, fff00000c76fca40) [ 18.460598] [ 18.460640] The buggy address belongs to the physical page: [ 18.460676] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1076fc [ 18.460733] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.460788] page_type: f5(slab) [ 18.460834] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 18.460888] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.460932] page dumped because: kasan: bad access detected [ 18.461307] [ 18.461485] Memory state around the buggy address: [ 18.461590] fff00000c76fc900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.461718] fff00000c76fc980: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 18.462427] >fff00000c76fca00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 18.462522] ^ [ 18.462556] fff00000c76fca80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.462625] fff00000c76fcb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.462978] ==================================================================
[ 11.695890] ================================================================== [ 11.696437] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 11.696813] Read of size 18446744073709551614 at addr ffff888102efde04 by task kunit_try_catch/197 [ 11.697275] [ 11.697397] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.697444] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.697456] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.697476] Call Trace: [ 11.697488] <TASK> [ 11.697506] dump_stack_lvl+0x73/0xb0 [ 11.697537] print_report+0xd1/0x650 [ 11.697560] ? __virt_addr_valid+0x1db/0x2d0 [ 11.697582] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.697605] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.697625] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.697668] kasan_report+0x141/0x180 [ 11.697690] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.697719] kasan_check_range+0x10c/0x1c0 [ 11.697741] __asan_memmove+0x27/0x70 [ 11.697760] kmalloc_memmove_negative_size+0x171/0x330 [ 11.697783] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.697806] ? __schedule+0x10cc/0x2b60 [ 11.697827] ? __pfx_read_tsc+0x10/0x10 [ 11.697848] ? ktime_get_ts64+0x86/0x230 [ 11.697872] kunit_try_run_case+0x1a5/0x480 [ 11.697896] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.698114] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.698151] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.698174] ? __kthread_parkme+0x82/0x180 [ 11.698195] ? preempt_count_sub+0x50/0x80 [ 11.698219] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.698242] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.698266] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.698289] kthread+0x337/0x6f0 [ 11.698307] ? trace_preempt_on+0x20/0xc0 [ 11.698330] ? __pfx_kthread+0x10/0x10 [ 11.698349] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.698369] ? calculate_sigpending+0x7b/0xa0 [ 11.698407] ? __pfx_kthread+0x10/0x10 [ 11.698427] ret_from_fork+0x116/0x1d0 [ 11.698445] ? __pfx_kthread+0x10/0x10 [ 11.698464] ret_from_fork_asm+0x1a/0x30 [ 11.698495] </TASK> [ 11.698506] [ 11.706366] Allocated by task 197: [ 11.706587] kasan_save_stack+0x45/0x70 [ 11.706774] kasan_save_track+0x18/0x40 [ 11.706921] kasan_save_alloc_info+0x3b/0x50 [ 11.707137] __kasan_kmalloc+0xb7/0xc0 [ 11.707571] __kmalloc_cache_noprof+0x189/0x420 [ 11.707844] kmalloc_memmove_negative_size+0xac/0x330 [ 11.708086] kunit_try_run_case+0x1a5/0x480 [ 11.708246] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.708514] kthread+0x337/0x6f0 [ 11.708716] ret_from_fork+0x116/0x1d0 [ 11.708888] ret_from_fork_asm+0x1a/0x30 [ 11.709053] [ 11.709144] The buggy address belongs to the object at ffff888102efde00 [ 11.709144] which belongs to the cache kmalloc-64 of size 64 [ 11.709580] The buggy address is located 4 bytes inside of [ 11.709580] 64-byte region [ffff888102efde00, ffff888102efde40) [ 11.710012] [ 11.710200] The buggy address belongs to the physical page: [ 11.710476] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102efd [ 11.710920] flags: 0x200000000000000(node=0|zone=2) [ 11.711398] page_type: f5(slab) [ 11.711542] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.711854] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.712242] page dumped because: kasan: bad access detected [ 11.712474] [ 11.712563] Memory state around the buggy address: [ 11.712719] ffff888102efdd00: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 11.712932] ffff888102efdd80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.713146] >ffff888102efde00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.713443] ^ [ 11.713605] ffff888102efde80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.714262] ffff888102efdf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.714505] ==================================================================