Date
July 8, 2025, 7:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.365942] ================================================================== [ 19.366025] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.366089] Read of size 18446744073709551614 at addr fff00000c5709404 by task kunit_try_catch/180 [ 19.366181] [ 19.366216] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.366296] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.366330] Hardware name: linux,dummy-virt (DT) [ 19.366369] Call trace: [ 19.366392] show_stack+0x20/0x38 (C) [ 19.366446] dump_stack_lvl+0x8c/0xd0 [ 19.366492] print_report+0x118/0x608 [ 19.366536] kasan_report+0xdc/0x128 [ 19.366588] kasan_check_range+0x100/0x1a8 [ 19.366634] __asan_memmove+0x3c/0x98 [ 19.366682] kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.366867] kunit_try_run_case+0x170/0x3f0 [ 19.366920] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.367353] kthread+0x328/0x630 [ 19.369542] ret_from_fork+0x10/0x20 [ 19.369889] [ 19.369944] Allocated by task 180: [ 19.370080] kasan_save_stack+0x3c/0x68 [ 19.370194] kasan_save_track+0x20/0x40 [ 19.370336] kasan_save_alloc_info+0x40/0x58 [ 19.370462] __kasan_kmalloc+0xd4/0xd8 [ 19.370537] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.370683] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 19.370813] kunit_try_run_case+0x170/0x3f0 [ 19.371059] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.371269] kthread+0x328/0x630 [ 19.371334] ret_from_fork+0x10/0x20 [ 19.371456] [ 19.371566] The buggy address belongs to the object at fff00000c5709400 [ 19.371566] which belongs to the cache kmalloc-64 of size 64 [ 19.371767] The buggy address is located 4 bytes inside of [ 19.371767] 64-byte region [fff00000c5709400, fff00000c5709440) [ 19.371936] [ 19.372015] The buggy address belongs to the physical page: [ 19.372124] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105709 [ 19.372182] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.372233] page_type: f5(slab) [ 19.372384] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.372632] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.372745] page dumped because: kasan: bad access detected [ 19.372845] [ 19.372865] Memory state around the buggy address: [ 19.372916] fff00000c5709300: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 19.373253] fff00000c5709380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.373342] >fff00000c5709400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 19.373492] ^ [ 19.373521] fff00000c5709480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.374039] fff00000c5709500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.374112] ==================================================================
[ 13.108931] ================================================================== [ 13.109669] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 13.110057] Read of size 18446744073709551614 at addr ffff888102b00d84 by task kunit_try_catch/197 [ 13.110913] [ 13.111211] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.111273] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.111286] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.111307] Call Trace: [ 13.111318] <TASK> [ 13.111332] dump_stack_lvl+0x73/0xb0 [ 13.111361] print_report+0xd1/0x650 [ 13.111382] ? __virt_addr_valid+0x1db/0x2d0 [ 13.111402] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.111425] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.111449] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.111493] kasan_report+0x141/0x180 [ 13.111515] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.111543] kasan_check_range+0x10c/0x1c0 [ 13.111565] __asan_memmove+0x27/0x70 [ 13.111584] kmalloc_memmove_negative_size+0x171/0x330 [ 13.111608] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 13.111632] ? __schedule+0x10cc/0x2b60 [ 13.111653] ? __pfx_read_tsc+0x10/0x10 [ 13.111673] ? ktime_get_ts64+0x86/0x230 [ 13.111696] kunit_try_run_case+0x1a5/0x480 [ 13.111719] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.111740] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.111762] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.111785] ? __kthread_parkme+0x82/0x180 [ 13.111804] ? preempt_count_sub+0x50/0x80 [ 13.111826] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.111848] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.111870] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.111892] kthread+0x337/0x6f0 [ 13.111910] ? trace_preempt_on+0x20/0xc0 [ 13.111931] ? __pfx_kthread+0x10/0x10 [ 13.111951] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.111970] ? calculate_sigpending+0x7b/0xa0 [ 13.111993] ? __pfx_kthread+0x10/0x10 [ 13.112013] ret_from_fork+0x116/0x1d0 [ 13.112030] ? __pfx_kthread+0x10/0x10 [ 13.112129] ret_from_fork_asm+0x1a/0x30 [ 13.112164] </TASK> [ 13.112176] [ 13.122148] Allocated by task 197: [ 13.122421] kasan_save_stack+0x45/0x70 [ 13.122717] kasan_save_track+0x18/0x40 [ 13.122896] kasan_save_alloc_info+0x3b/0x50 [ 13.123146] __kasan_kmalloc+0xb7/0xc0 [ 13.123374] __kmalloc_cache_noprof+0x189/0x420 [ 13.123738] kmalloc_memmove_negative_size+0xac/0x330 [ 13.124033] kunit_try_run_case+0x1a5/0x480 [ 13.124194] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.124569] kthread+0x337/0x6f0 [ 13.124846] ret_from_fork+0x116/0x1d0 [ 13.125019] ret_from_fork_asm+0x1a/0x30 [ 13.125203] [ 13.125300] The buggy address belongs to the object at ffff888102b00d80 [ 13.125300] which belongs to the cache kmalloc-64 of size 64 [ 13.126074] The buggy address is located 4 bytes inside of [ 13.126074] 64-byte region [ffff888102b00d80, ffff888102b00dc0) [ 13.126765] [ 13.126896] The buggy address belongs to the physical page: [ 13.127187] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b00 [ 13.127766] flags: 0x200000000000000(node=0|zone=2) [ 13.128056] page_type: f5(slab) [ 13.128188] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 13.128561] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 13.128947] page dumped because: kasan: bad access detected [ 13.129364] [ 13.129656] Memory state around the buggy address: [ 13.129833] ffff888102b00c80: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 13.130182] ffff888102b00d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.130632] >ffff888102b00d80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 13.131050] ^ [ 13.131387] ffff888102b00e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.131859] ffff888102b00e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.132305] ==================================================================