Date
July 8, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.473429] ================================================================== [ 19.473499] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.473552] Read of size 18446744073709551614 at addr fff00000c63b0c84 by task kunit_try_catch/180 [ 19.473630] [ 19.474305] CPU: 1 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.474956] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.474983] Hardware name: linux,dummy-virt (DT) [ 19.475014] Call trace: [ 19.475037] show_stack+0x20/0x38 (C) [ 19.475087] dump_stack_lvl+0x8c/0xd0 [ 19.475135] print_report+0x118/0x608 [ 19.475192] kasan_report+0xdc/0x128 [ 19.475687] kasan_check_range+0x100/0x1a8 [ 19.475756] __asan_memmove+0x3c/0x98 [ 19.475801] kmalloc_memmove_negative_size+0x154/0x2e0 [ 19.475905] kunit_try_run_case+0x170/0x3f0 [ 19.475979] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.476060] kthread+0x328/0x630 [ 19.476102] ret_from_fork+0x10/0x20 [ 19.476149] [ 19.476265] Allocated by task 180: [ 19.476752] kasan_save_stack+0x3c/0x68 [ 19.476940] kasan_save_track+0x20/0x40 [ 19.477294] kasan_save_alloc_info+0x40/0x58 [ 19.477339] __kasan_kmalloc+0xd4/0xd8 [ 19.477375] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.479383] kmalloc_memmove_negative_size+0xb0/0x2e0 [ 19.479431] kunit_try_run_case+0x170/0x3f0 [ 19.479713] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.479760] kthread+0x328/0x630 [ 19.479792] ret_from_fork+0x10/0x20 [ 19.479830] [ 19.480115] The buggy address belongs to the object at fff00000c63b0c80 [ 19.480115] which belongs to the cache kmalloc-64 of size 64 [ 19.480209] The buggy address is located 4 bytes inside of [ 19.480209] 64-byte region [fff00000c63b0c80, fff00000c63b0cc0) [ 19.480460] [ 19.480642] The buggy address belongs to the physical page: [ 19.480939] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063b0 [ 19.481388] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.481609] page_type: f5(slab) [ 19.482005] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.482312] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.482544] page dumped because: kasan: bad access detected [ 19.482578] [ 19.482596] Memory state around the buggy address: [ 19.482970] fff00000c63b0b80: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 19.483022] fff00000c63b0c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.483065] >fff00000c63b0c80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 19.483869] ^ [ 19.483910] fff00000c63b0d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.483954] fff00000c63b0d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.484053] ==================================================================
[ 12.677739] ================================================================== [ 12.678247] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330 [ 12.678596] Read of size 18446744073709551614 at addr ffff88810266af84 by task kunit_try_catch/198 [ 12.678992] [ 12.679105] CPU: 1 UID: 0 PID: 198 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.679150] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.679163] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.679184] Call Trace: [ 12.679196] <TASK> [ 12.679215] dump_stack_lvl+0x73/0xb0 [ 12.679246] print_report+0xd1/0x650 [ 12.679269] ? __virt_addr_valid+0x1db/0x2d0 [ 12.679292] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.679317] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.679340] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.679382] kasan_report+0x141/0x180 [ 12.679404] ? kmalloc_memmove_negative_size+0x171/0x330 [ 12.679434] kasan_check_range+0x10c/0x1c0 [ 12.679458] __asan_memmove+0x27/0x70 [ 12.679477] kmalloc_memmove_negative_size+0x171/0x330 [ 12.679503] ? __pfx_kmalloc_memmove_negative_size+0x10/0x10 [ 12.679529] ? __schedule+0x10cc/0x2b60 [ 12.679551] ? __pfx_read_tsc+0x10/0x10 [ 12.679573] ? ktime_get_ts64+0x86/0x230 [ 12.679610] kunit_try_run_case+0x1a5/0x480 [ 12.679635] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.679657] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.679681] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.679880] ? __kthread_parkme+0x82/0x180 [ 12.679907] ? preempt_count_sub+0x50/0x80 [ 12.679984] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.680010] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.680035] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.680059] kthread+0x337/0x6f0 [ 12.680080] ? trace_preempt_on+0x20/0xc0 [ 12.680104] ? __pfx_kthread+0x10/0x10 [ 12.680124] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.680145] ? calculate_sigpending+0x7b/0xa0 [ 12.680170] ? __pfx_kthread+0x10/0x10 [ 12.680191] ret_from_fork+0x116/0x1d0 [ 12.680210] ? __pfx_kthread+0x10/0x10 [ 12.680229] ret_from_fork_asm+0x1a/0x30 [ 12.680261] </TASK> [ 12.680272] [ 12.687992] Allocated by task 198: [ 12.688222] kasan_save_stack+0x45/0x70 [ 12.688773] kasan_save_track+0x18/0x40 [ 12.689068] kasan_save_alloc_info+0x3b/0x50 [ 12.689258] __kasan_kmalloc+0xb7/0xc0 [ 12.689423] __kmalloc_cache_noprof+0x189/0x420 [ 12.689689] kmalloc_memmove_negative_size+0xac/0x330 [ 12.689861] kunit_try_run_case+0x1a5/0x480 [ 12.690299] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.690566] kthread+0x337/0x6f0 [ 12.690731] ret_from_fork+0x116/0x1d0 [ 12.690895] ret_from_fork_asm+0x1a/0x30 [ 12.691087] [ 12.691165] The buggy address belongs to the object at ffff88810266af80 [ 12.691165] which belongs to the cache kmalloc-64 of size 64 [ 12.691700] The buggy address is located 4 bytes inside of [ 12.691700] 64-byte region [ffff88810266af80, ffff88810266afc0) [ 12.692027] [ 12.692099] The buggy address belongs to the physical page: [ 12.692330] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10266a [ 12.692693] flags: 0x200000000000000(node=0|zone=2) [ 12.693036] page_type: f5(slab) [ 12.693162] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.693389] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.693663] page dumped because: kasan: bad access detected [ 12.694075] [ 12.694169] Memory state around the buggy address: [ 12.694394] ffff88810266ae80: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc [ 12.695282] ffff88810266af00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.695647] >ffff88810266af80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 12.695882] ^ [ 12.696069] ffff88810266b000: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 12.696396] ffff88810266b080: 00 00 00 03 fc fc fc fc fa fb fb fb fc fc fc fc [ 12.696733] ==================================================================