Date
July 18, 2025, 1:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.283578] ================================================================== [ 31.283648] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 31.283710] Write of size 1 at addr fff00000c65ddf00 by task kunit_try_catch/175 [ 31.283868] [ 31.283900] CPU: 0 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT [ 31.284127] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.284159] Hardware name: linux,dummy-virt (DT) [ 31.284341] Call trace: [ 31.284385] show_stack+0x20/0x38 (C) [ 31.284478] dump_stack_lvl+0x8c/0xd0 [ 31.284571] print_report+0x118/0x5e8 [ 31.284707] kasan_report+0xdc/0x128 [ 31.284771] __asan_report_store1_noabort+0x20/0x30 [ 31.285040] kmalloc_big_oob_right+0x2a4/0x2f0 [ 31.285128] kunit_try_run_case+0x170/0x3f0 [ 31.285213] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.285333] kthread+0x328/0x630 [ 31.285470] ret_from_fork+0x10/0x20 [ 31.285544] [ 31.285562] Allocated by task 175: [ 31.285840] kasan_save_stack+0x3c/0x68 [ 31.285914] kasan_save_track+0x20/0x40 [ 31.285993] kasan_save_alloc_info+0x40/0x58 [ 31.286110] __kasan_kmalloc+0xd4/0xd8 [ 31.286165] __kmalloc_cache_noprof+0x16c/0x3c0 [ 31.286233] kmalloc_big_oob_right+0xb8/0x2f0 [ 31.286274] kunit_try_run_case+0x170/0x3f0 [ 31.286311] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.286354] kthread+0x328/0x630 [ 31.286396] ret_from_fork+0x10/0x20 [ 31.286439] [ 31.286459] The buggy address belongs to the object at fff00000c65dc000 [ 31.286459] which belongs to the cache kmalloc-8k of size 8192 [ 31.286514] The buggy address is located 0 bytes to the right of [ 31.286514] allocated 7936-byte region [fff00000c65dc000, fff00000c65ddf00) [ 31.286574] [ 31.286605] The buggy address belongs to the physical page: [ 31.286638] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065d8 [ 31.286690] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 31.286743] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 31.286794] page_type: f5(slab) [ 31.286840] raw: 0bfffe0000000040 fff00000c0002280 dead000000000100 dead000000000122 [ 31.286887] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 31.286950] head: 0bfffe0000000040 fff00000c0002280 dead000000000100 dead000000000122 [ 31.286998] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 31.287045] head: 0bfffe0000000003 ffffc1ffc3197601 00000000ffffffff 00000000ffffffff [ 31.287101] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 31.287139] page dumped because: kasan: bad access detected [ 31.287177] [ 31.287195] Memory state around the buggy address: [ 31.287233] fff00000c65dde00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.287276] fff00000c65dde80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.287324] >fff00000c65ddf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.287360] ^ [ 31.287395] fff00000c65ddf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.287443] fff00000c65de000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.287478] ==================================================================
[ 24.225671] ================================================================== [ 24.226425] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 24.226771] Write of size 1 at addr ffff888106299f00 by task kunit_try_catch/192 [ 24.227152] [ 24.227294] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250718 #1 PREEMPT(voluntary) [ 24.227352] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.227364] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.227385] Call Trace: [ 24.227396] <TASK> [ 24.227419] dump_stack_lvl+0x73/0xb0 [ 24.227448] print_report+0xd1/0x640 [ 24.227469] ? __virt_addr_valid+0x1db/0x2d0 [ 24.227502] ? kmalloc_big_oob_right+0x316/0x370 [ 24.227523] ? kasan_complete_mode_report_info+0x2a/0x200 [ 24.227547] ? kmalloc_big_oob_right+0x316/0x370 [ 24.227568] kasan_report+0x141/0x180 [ 24.227589] ? kmalloc_big_oob_right+0x316/0x370 [ 24.227622] __asan_report_store1_noabort+0x1b/0x30 [ 24.227645] kmalloc_big_oob_right+0x316/0x370 [ 24.227677] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 24.227699] ? __schedule+0x10da/0x2b60 [ 24.227721] ? __pfx_read_tsc+0x10/0x10 [ 24.227742] ? ktime_get_ts64+0x86/0x230 [ 24.227766] kunit_try_run_case+0x1a5/0x480 [ 24.227842] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.227868] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 24.227891] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.227913] ? __kthread_parkme+0x82/0x180 [ 24.227933] ? preempt_count_sub+0x50/0x80 [ 24.227955] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.227988] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.228010] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.228032] kthread+0x337/0x6f0 [ 24.228061] ? trace_preempt_on+0x20/0xc0 [ 24.228084] ? __pfx_kthread+0x10/0x10 [ 24.228103] ? _raw_spin_unlock_irq+0x47/0x80 [ 24.228124] ? calculate_sigpending+0x7b/0xa0 [ 24.228146] ? __pfx_kthread+0x10/0x10 [ 24.228166] ret_from_fork+0x116/0x1d0 [ 24.228194] ? __pfx_kthread+0x10/0x10 [ 24.228214] ret_from_fork_asm+0x1a/0x30 [ 24.228243] </TASK> [ 24.228253] [ 24.235445] Allocated by task 192: [ 24.235568] kasan_save_stack+0x45/0x70 [ 24.235724] kasan_save_track+0x18/0x40 [ 24.235902] kasan_save_alloc_info+0x3b/0x50 [ 24.236103] __kasan_kmalloc+0xb7/0xc0 [ 24.236286] __kmalloc_cache_noprof+0x189/0x420 [ 24.236499] kmalloc_big_oob_right+0xa9/0x370 [ 24.236669] kunit_try_run_case+0x1a5/0x480 [ 24.236808] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.236974] kthread+0x337/0x6f0 [ 24.237086] ret_from_fork+0x116/0x1d0 [ 24.237449] ret_from_fork_asm+0x1a/0x30 [ 24.237650] [ 24.237737] The buggy address belongs to the object at ffff888106298000 [ 24.237737] which belongs to the cache kmalloc-8k of size 8192 [ 24.238651] The buggy address is located 0 bytes to the right of [ 24.238651] allocated 7936-byte region [ffff888106298000, ffff888106299f00) [ 24.239253] [ 24.239343] The buggy address belongs to the physical page: [ 24.239590] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106298 [ 24.240015] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 24.240346] flags: 0x200000000000040(head|node=0|zone=2) [ 24.240578] page_type: f5(slab) [ 24.240743] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 24.241135] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 24.241404] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 24.241629] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 24.241853] head: 0200000000000003 ffffea000418a601 00000000ffffffff 00000000ffffffff [ 24.242137] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 24.242484] page dumped because: kasan: bad access detected [ 24.242730] [ 24.242814] Memory state around the buggy address: [ 24.243028] ffff888106299e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.243606] ffff888106299e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.244027] >ffff888106299f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.244330] ^ [ 24.244443] ffff888106299f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.244659] ffff88810629a000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.245206] ==================================================================