Date
July 5, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.073967] ================================================================== [ 19.074123] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.074235] Read of size 18446744073709551614 at addr fff00000c78aa204 by task kunit_try_catch/181 [ 19.074748] [ 19.075011] CPU: 0 UID: 0 PID: 181 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.075289] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.075397] Hardware name: linux,dummy-virt (DT) [ 19.075472] Call trace: [ 19.075519] show_stack+0x20/0x38 (C) [ 19.075636] dump_stack_lvl+0x8c/0xd0 [ 19.075743] print_report+0x118/0x608 [ 19.075832] kasan_report+0xdc/0x128 [ 19.075914] kasan_check_range+0x100/0x1a8 [ 19.076008] __asan_memmove+0x3c/0x98 [ 19.076090] kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.076187] kunit_try_run_case+0x170/0x3f0 [ 19.076281] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.076415] kthread+0x328/0x630 [ 19.076514] ret_from_fork+0x10/0x20 [ 19.076656] [ 19.076694] Allocated by task 181: [ 19.076753] kasan_save_stack+0x3c/0x68 [ 19.076868] kasan_save_track+0x20/0x40 [ 19.076949] kasan_save_alloc_info+0x40/0x58 [ 19.077045] __kasan_kmalloc+0xd4/0xd8 [ 19.077220] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.077334] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 19.077493] kunit_try_run_case+0x170/0x3f0 [ 19.077580] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.077666] kthread+0x328/0x630 [ 19.077742] ret_from_fork+0x10/0x20 [ 19.077823] [ 19.077867] The buggy address belongs to the object at fff00000c78aa200 [ 19.077867] which belongs to the cache kmalloc-64 of size 64 [ 19.077991] The buggy address is located 4 bytes inside of [ 19.077991] 64-byte region [fff00000c78aa200, fff00000c78aa240) [ 19.078118] [ 19.078177] The buggy address belongs to the physical page: [ 19.078269] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078aa [ 19.078394] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.078507] page_type: f5(slab) [ 19.078594] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.078708] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.079278] page dumped because: kasan: bad access detected [ 19.079365] [ 19.079409] Memory state around the buggy address: [ 19.079470] fff00000c78aa100: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 19.079569] fff00000c78aa180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.080474] >fff00000c78aa200: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 19.080656] ^ [ 19.080931] fff00000c78aa280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.081064] fff00000c78aa300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.081242] ==================================================================
[ 13.815418] ================================================================== [ 13.816018] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 13.816443] Read of size 18446744073709551614 at addr ffff8881038d5504 by task kunit_try_catch/197 [ 13.816862] [ 13.817006] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.817063] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.817078] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.817104] Call Trace: [ 13.817119] <TASK> [ 13.817141] dump_stack_lvl+0x73/0xb0 [ 13.817175] print_report+0xd1/0x650 [ 13.817201] ? __virt_addr_valid+0x1db/0x2d0 [ 13.817229] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.817258] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.817283] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.817906] kasan_report+0x141/0x180 [ 13.817943] ? kmalloc_memmove_negative_size+0x171/0x330 [ 13.817979] kasan_check_range+0x10c/0x1c0 [ 13.818007] __asan_memmove+0x27/0x70 [ 13.818030] kmalloc_memmove_negative_size+0x171/0x330 [ 13.818058] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 13.818088] ? __schedule+0x10cc/0x2b60 [ 13.818116] ? __pfx_read_tsc+0x10/0x10 [ 13.818143] ? ktime_get_ts64+0x86/0x230 [ 13.818172] kunit_try_run_case+0x1a5/0x480 [ 13.818203] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.818228] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.818256] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.818283] ? __kthread_parkme+0x82/0x180 [ 13.818307] ? preempt_count_sub+0x50/0x80 [ 13.818334] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.818361] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.818387] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.818413] kthread+0x337/0x6f0 [ 13.818444] ? trace_preempt_on+0x20/0xc0 [ 13.818472] ? __pfx_kthread+0x10/0x10 [ 13.818496] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.818520] ? calculate_sigpending+0x7b/0xa0 [ 13.818548] ? __pfx_kthread+0x10/0x10 [ 13.818573] ret_from_fork+0x116/0x1d0 [ 13.818594] ? __pfx_kthread+0x10/0x10 [ 13.818618] ret_from_fork_asm+0x1a/0x30 [ 13.818671] </TASK> [ 13.818685] [ 13.830832] Allocated by task 197: [ 13.831075] kasan_save_stack+0x45/0x70 [ 13.831333] kasan_save_track+0x18/0x40 [ 13.831544] kasan_save_alloc_info+0x3b/0x50 [ 13.832364] __kasan_kmalloc+0xb7/0xc0 [ 13.832605] __kmalloc_cache_noprof+0x189/0x420 [ 13.833172] kmalloc_memmove_negative_size+0xac/0x330 [ 13.833451] kunit_try_run_case+0x1a5/0x480 [ 13.833989] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.834243] kthread+0x337/0x6f0 [ 13.834461] ret_from_fork+0x116/0x1d0 [ 13.834698] ret_from_fork_asm+0x1a/0x30 [ 13.835188] [ 13.835318] The buggy address belongs to the object at ffff8881038d5500 [ 13.835318] which belongs to the cache kmalloc-64 of size 64 [ 13.835921] The buggy address is located 4 bytes inside of [ 13.835921] 64-byte region [ffff8881038d5500, ffff8881038d5540) [ 13.836426] [ 13.836549] The buggy address belongs to the physical page: [ 13.836936] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1038d5 [ 13.837316] flags: 0x200000000000000(node=0|zone=2) [ 13.837570] page_type: f5(slab) [ 13.837908] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 13.838284] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 13.838735] page dumped because: kasan: bad access detected [ 13.839280] [ 13.839408] Memory state around the buggy address: [ 13.839641] ffff8881038d5400: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 13.840132] ffff8881038d5480: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 13.840700] >ffff8881038d5500: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 13.841187] ^ [ 13.841395] ffff8881038d5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.841908] ffff8881038d5600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.842217] ==================================================================