Date
May 23, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 27.707334] ================================================================== [ 27.708064] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 27.708253] Read of size 18446744073709551614 at addr fff00000c7770c04 by task kunit_try_catch/182 [ 27.708486] [ 27.708581] CPU: 0 UID: 0 PID: 182 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT [ 27.708803] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.708866] Hardware name: linux,dummy-virt (DT) [ 27.708944] Call trace: [ 27.709009] show_stack+0x20/0x38 (C) [ 27.709155] dump_stack_lvl+0x8c/0xd0 [ 27.709294] print_report+0x118/0x608 [ 27.709424] kasan_report+0xdc/0x128 [ 27.710282] kasan_check_range+0x100/0x1a8 [ 27.710916] __asan_memmove+0x3c/0x98 [ 27.710998] kmalloc_memmove_negative_size+0x154/0x2e0 [ 27.711118] kunit_try_run_case+0x170/0x3f0 [ 27.711306] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.711557] kthread+0x328/0x630 [ 27.711741] ret_from_fork+0x10/0x20 [ 27.711894] [ 27.711941] Allocated by task 182: [ 27.712002] kasan_save_stack+0x3c/0x68 [ 27.712104] kasan_save_track+0x20/0x40 [ 27.712250] kasan_save_alloc_info+0x40/0x58 [ 27.712358] __kasan_kmalloc+0xd4/0xd8 [ 27.712497] __kmalloc_cache_noprof+0x15c/0x3c0 [ 27.712647] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 27.712764] kunit_try_run_case+0x170/0x3f0 [ 27.712876] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.712980] kthread+0x328/0x630 [ 27.713060] ret_from_fork+0x10/0x20 [ 27.713148] [ 27.713201] The buggy address belongs to the object at fff00000c7770c00 [ 27.713201] which belongs to the cache kmalloc-64 of size 64 [ 27.713367] The buggy address is located 4 bytes inside of [ 27.713367] 64-byte region [fff00000c7770c00, fff00000c7770c40) [ 27.713569] [ 27.713621] The buggy address belongs to the physical page: [ 27.713706] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107770 [ 27.714154] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.714332] page_type: f5(slab) [ 27.714522] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 27.714720] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 27.714886] page dumped because: kasan: bad access detected [ 27.715015] [ 27.715079] Memory state around the buggy address: [ 27.715168] fff00000c7770b00: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 27.715327] fff00000c7770b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.715532] >fff00000c7770c00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 27.715695] ^ [ 27.715780] fff00000c7770c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.715904] fff00000c7770d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.716024] ==================================================================
[ 12.746987] ================================================================== [ 12.747833] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.748096] Read of size 18446744073709551614 at addr ffff888102701304 by task kunit_try_catch/199 [ 12.748426] [ 12.748524] CPU: 0 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 12.748572] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.748584] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.748604] Call Trace: [ 12.748618] <TASK> [ 12.748635] dump_stack_lvl+0x73/0xb0 [ 12.748663] print_report+0xd1/0x650 [ 12.748685] ? __virt_addr_valid+0x1db/0x2d0 [ 12.748705] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.748731] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.748752] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.748792] kasan_report+0x141/0x180 [ 12.748814] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.748844] kasan_check_range+0x10c/0x1c0 [ 12.748865] __asan_memmove+0x27/0x70 [ 12.748885] kmalloc_memmove_negative_size+0x171/0x330 [ 12.748909] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.748935] ? __schedule+0x10cc/0x2b30 [ 12.748957] ? __pfx_read_tsc+0x10/0x10 [ 12.748976] ? ktime_get_ts64+0x86/0x230 [ 12.749001] kunit_try_run_case+0x1a5/0x480 [ 12.749024] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.749045] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.749068] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.749090] ? __kthread_parkme+0x82/0x180 [ 12.749112] ? preempt_count_sub+0x50/0x80 [ 12.749136] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.749160] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.749182] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.749206] kthread+0x337/0x6f0 [ 12.749223] ? trace_preempt_on+0x20/0xc0 [ 12.749245] ? __pfx_kthread+0x10/0x10 [ 12.749262] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.749282] ? calculate_sigpending+0x7b/0xa0 [ 12.749342] ? __pfx_kthread+0x10/0x10 [ 12.749360] ret_from_fork+0x41/0x80 [ 12.749380] ? __pfx_kthread+0x10/0x10 [ 12.749397] ret_from_fork_asm+0x1a/0x30 [ 12.749446] </TASK> [ 12.749458] [ 12.761396] Allocated by task 199: [ 12.761608] kasan_save_stack+0x45/0x70 [ 12.761840] kasan_save_track+0x18/0x40 [ 12.762132] kasan_save_alloc_info+0x3b/0x50 [ 12.762282] __kasan_kmalloc+0xb7/0xc0 [ 12.762452] __kmalloc_cache_noprof+0x189/0x420 [ 12.762674] kmalloc_memmove_negative_size+0xac/0x330 [ 12.763589] kunit_try_run_case+0x1a5/0x480 [ 12.764175] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.765037] kthread+0x337/0x6f0 [ 12.765525] ret_from_fork+0x41/0x80 [ 12.765966] ret_from_fork_asm+0x1a/0x30 [ 12.766121] [ 12.766199] The buggy address belongs to the object at ffff888102701300 [ 12.766199] which belongs to the cache kmalloc-64 of size 64 [ 12.767769] The buggy address is located 4 bytes inside of [ 12.767769] 64-byte region [ffff888102701300, ffff888102701340) [ 12.769234] [ 12.769584] The buggy address belongs to the physical page: [ 12.770201] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102701 [ 12.770671] flags: 0x200000000000000(node=0|zone=2) [ 12.771472] page_type: f5(slab) [ 12.772065] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.772649] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.772937] page dumped because: kasan: bad access detected [ 12.773164] [ 12.773251] Memory state around the buggy address: [ 12.773469] ffff888102701200: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.773720] ffff888102701280: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.774033] >ffff888102701300: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.774286] ^ [ 12.774508] ffff888102701380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.774823] ffff888102701400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.775062] ==================================================================