Date
July 3, 2025, 3:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.662250] ================================================================== [ 15.662617] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 15.662852] Read of size 18446744073709551614 at addr fff00000c7816e04 by task kunit_try_catch/183 [ 15.663394] [ 15.663510] CPU: 1 UID: 0 PID: 183 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT [ 15.663609] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.663828] Hardware name: linux,dummy-virt (DT) [ 15.663990] Call trace: [ 15.664109] show_stack+0x20/0x38 (C) [ 15.664214] dump_stack_lvl+0x8c/0xd0 [ 15.664322] print_report+0x118/0x608 [ 15.664406] kasan_report+0xdc/0x128 [ 15.664630] kasan_check_range+0x100/0x1a8 [ 15.665152] __asan_memmove+0x3c/0x98 [ 15.665399] kmalloc_memmove_negative_size+0x154/0x2e0 [ 15.665585] kunit_try_run_case+0x170/0x3f0 [ 15.665844] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.666219] kthread+0x328/0x630 [ 15.666414] ret_from_fork+0x10/0x20 [ 15.666468] [ 15.666487] Allocated by task 183: [ 15.667803] kasan_save_stack+0x3c/0x68 [ 15.668001] kasan_save_track+0x20/0x40 [ 15.668235] kasan_save_alloc_info+0x40/0x58 [ 15.668306] __kasan_kmalloc+0xd4/0xd8 [ 15.668682] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.668748] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 15.668987] kunit_try_run_case+0x170/0x3f0 [ 15.669132] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.669441] kthread+0x328/0x630 [ 15.669486] ret_from_fork+0x10/0x20 [ 15.669523] [ 15.669665] The buggy address belongs to the object at fff00000c7816e00 [ 15.669665] which belongs to the cache kmalloc-64 of size 64 [ 15.669887] The buggy address is located 4 bytes inside of [ 15.669887] 64-byte region [fff00000c7816e00, fff00000c7816e40) [ 15.670188] [ 15.670310] The buggy address belongs to the physical page: [ 15.670402] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107816 [ 15.670467] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.670627] page_type: f5(slab) [ 15.670674] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 15.670724] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 15.671130] page dumped because: kasan: bad access detected [ 15.671300] [ 15.671823] Memory state around the buggy address: [ 15.671885] fff00000c7816d00: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 15.671966] fff00000c7816d80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 15.672164] >fff00000c7816e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 15.672373] ^ [ 15.672410] fff00000c7816e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.672650] fff00000c7816f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.672910] ==================================================================
[ 11.372534] ================================================================== [ 11.373837] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 11.374579] Read of size 18446744073709551614 at addr ffff888102dcc884 by task kunit_try_catch/199 [ 11.375530] [ 11.375727] CPU: 1 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 11.375777] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.375788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.375810] Call Trace: [ 11.375823] <TASK> [ 11.375842] dump_stack_lvl+0x73/0xb0 [ 11.375870] print_report+0xd1/0x650 [ 11.375894] ? __virt_addr_valid+0x1db/0x2d0 [ 11.375950] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.375973] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.376001] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.376043] kasan_report+0x141/0x180 [ 11.376066] ? kmalloc_memmove_negative_size+0x171/0x330 [ 11.376092] kasan_check_range+0x10c/0x1c0 [ 11.376112] __asan_memmove+0x27/0x70 [ 11.376132] kmalloc_memmove_negative_size+0x171/0x330 [ 11.376154] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.376178] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 11.376203] kunit_try_run_case+0x1a5/0x480 [ 11.376228] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.376259] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.376284] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.376307] ? __kthread_parkme+0x82/0x180 [ 11.376330] ? preempt_count_sub+0x50/0x80 [ 11.376356] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.376379] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.376401] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.376424] kthread+0x337/0x6f0 [ 11.376441] ? trace_preempt_on+0x20/0xc0 [ 11.376464] ? __pfx_kthread+0x10/0x10 [ 11.376482] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.376504] ? calculate_sigpending+0x7b/0xa0 [ 11.376526] ? __pfx_kthread+0x10/0x10 [ 11.376544] ret_from_fork+0x41/0x80 [ 11.376566] ? __pfx_kthread+0x10/0x10 [ 11.376583] ret_from_fork_asm+0x1a/0x30 [ 11.376614] </TASK> [ 11.376625] [ 11.389303] Allocated by task 199: [ 11.389730] kasan_save_stack+0x45/0x70 [ 11.390167] kasan_save_track+0x18/0x40 [ 11.390616] kasan_save_alloc_info+0x3b/0x50 [ 11.390870] __kasan_kmalloc+0xb7/0xc0 [ 11.391044] __kmalloc_cache_noprof+0x189/0x420 [ 11.391202] kmalloc_memmove_negative_size+0xac/0x330 [ 11.391705] kunit_try_run_case+0x1a5/0x480 [ 11.392146] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.392750] kthread+0x337/0x6f0 [ 11.393120] ret_from_fork+0x41/0x80 [ 11.393507] ret_from_fork_asm+0x1a/0x30 [ 11.393803] [ 11.394049] The buggy address belongs to the object at ffff888102dcc880 [ 11.394049] which belongs to the cache kmalloc-64 of size 64 [ 11.394807] The buggy address is located 4 bytes inside of [ 11.394807] 64-byte region [ffff888102dcc880, ffff888102dcc8c0) [ 11.395141] [ 11.395214] The buggy address belongs to the physical page: [ 11.395741] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102dcc [ 11.396477] flags: 0x200000000000000(node=0|zone=2) [ 11.396983] page_type: f5(slab) [ 11.397187] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.397862] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.398494] page dumped because: kasan: bad access detected [ 11.398674] [ 11.398884] Memory state around the buggy address: [ 11.399322] ffff888102dcc780: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 11.400200] ffff888102dcc800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.400796] >ffff888102dcc880: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.401010] ^ [ 11.401123] ffff888102dcc900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.401374] ffff888102dcc980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.401920] ==================================================================