Date
July 6, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.831080] ================================================================== [ 17.831139] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 17.831186] Write of size 1 at addr fff00000c7819f00 by task kunit_try_catch/144 [ 17.831383] [ 17.831414] CPU: 1 UID: 0 PID: 144 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 17.831726] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.831814] Hardware name: linux,dummy-virt (DT) [ 17.831847] Call trace: [ 17.831868] show_stack+0x20/0x38 (C) [ 17.831927] dump_stack_lvl+0x8c/0xd0 [ 17.831983] print_report+0x118/0x608 [ 17.832031] kasan_report+0xdc/0x128 [ 17.832076] __asan_report_store1_noabort+0x20/0x30 [ 17.832124] kmalloc_big_oob_right+0x2a4/0x2f0 [ 17.832170] kunit_try_run_case+0x170/0x3f0 [ 17.832227] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.832278] kthread+0x328/0x630 [ 17.832319] ret_from_fork+0x10/0x20 [ 17.832365] [ 17.832385] Allocated by task 144: [ 17.832413] kasan_save_stack+0x3c/0x68 [ 17.832453] kasan_save_track+0x20/0x40 [ 17.832490] kasan_save_alloc_info+0x40/0x58 [ 17.832545] __kasan_kmalloc+0xd4/0xd8 [ 17.832581] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.832619] kmalloc_big_oob_right+0xb8/0x2f0 [ 17.832656] kunit_try_run_case+0x170/0x3f0 [ 17.832692] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.832735] kthread+0x328/0x630 [ 17.832774] ret_from_fork+0x10/0x20 [ 17.832815] [ 17.832835] The buggy address belongs to the object at fff00000c7818000 [ 17.832835] which belongs to the cache kmalloc-8k of size 8192 [ 17.832899] The buggy address is located 0 bytes to the right of [ 17.832899] allocated 7936-byte region [fff00000c7818000, fff00000c7819f00) [ 17.832962] [ 17.832982] The buggy address belongs to the physical page: [ 17.833012] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107818 [ 17.833061] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.833105] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 17.833154] page_type: f5(slab) [ 17.833201] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 17.833258] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 17.833317] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 17.833373] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 17.833421] head: 0bfffe0000000003 ffffc1ffc31e0601 00000000ffffffff 00000000ffffffff [ 17.833776] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 17.834113] page dumped because: kasan: bad access detected [ 17.834172] [ 17.834270] Memory state around the buggy address: [ 17.834323] fff00000c7819e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.834411] fff00000c7819e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.834566] >fff00000c7819f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.834666] ^ [ 17.834771] fff00000c7819f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.834837] fff00000c781a000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.834874] ==================================================================
[ 11.042055] ================================================================== [ 11.042587] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 11.043182] Write of size 1 at addr ffff888102b45f00 by task kunit_try_catch/161 [ 11.043603] [ 11.043728] CPU: 1 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.043772] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.043785] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.043805] Call Trace: [ 11.043817] <TASK> [ 11.043845] dump_stack_lvl+0x73/0xb0 [ 11.043874] print_report+0xd1/0x650 [ 11.043896] ? __virt_addr_valid+0x1db/0x2d0 [ 11.043996] ? kmalloc_big_oob_right+0x316/0x370 [ 11.044019] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.044051] ? kmalloc_big_oob_right+0x316/0x370 [ 11.044073] kasan_report+0x141/0x180 [ 11.044095] ? kmalloc_big_oob_right+0x316/0x370 [ 11.044133] __asan_report_store1_noabort+0x1b/0x30 [ 11.044153] kmalloc_big_oob_right+0x316/0x370 [ 11.044174] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 11.044197] ? __schedule+0x10cc/0x2b60 [ 11.044219] ? __pfx_read_tsc+0x10/0x10 [ 11.044249] ? ktime_get_ts64+0x86/0x230 [ 11.044273] kunit_try_run_case+0x1a5/0x480 [ 11.044297] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.044329] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.044351] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.044373] ? __kthread_parkme+0x82/0x180 [ 11.044394] ? preempt_count_sub+0x50/0x80 [ 11.044417] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.044440] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.044462] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.044484] kthread+0x337/0x6f0 [ 11.044503] ? trace_preempt_on+0x20/0xc0 [ 11.044526] ? __pfx_kthread+0x10/0x10 [ 11.044546] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.044601] ? calculate_sigpending+0x7b/0xa0 [ 11.044627] ? __pfx_kthread+0x10/0x10 [ 11.044660] ret_from_fork+0x116/0x1d0 [ 11.044679] ? __pfx_kthread+0x10/0x10 [ 11.044699] ret_from_fork_asm+0x1a/0x30 [ 11.044729] </TASK> [ 11.044741] [ 11.053669] Allocated by task 161: [ 11.053859] kasan_save_stack+0x45/0x70 [ 11.054245] kasan_save_track+0x18/0x40 [ 11.054390] kasan_save_alloc_info+0x3b/0x50 [ 11.054915] __kasan_kmalloc+0xb7/0xc0 [ 11.055195] __kmalloc_cache_noprof+0x189/0x420 [ 11.055406] kmalloc_big_oob_right+0xa9/0x370 [ 11.055556] kunit_try_run_case+0x1a5/0x480 [ 11.055707] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.056040] kthread+0x337/0x6f0 [ 11.056208] ret_from_fork+0x116/0x1d0 [ 11.056557] ret_from_fork_asm+0x1a/0x30 [ 11.056831] [ 11.056915] The buggy address belongs to the object at ffff888102b44000 [ 11.056915] which belongs to the cache kmalloc-8k of size 8192 [ 11.057273] The buggy address is located 0 bytes to the right of [ 11.057273] allocated 7936-byte region [ffff888102b44000, ffff888102b45f00) [ 11.058032] [ 11.058151] The buggy address belongs to the physical page: [ 11.058441] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b40 [ 11.058845] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 11.059388] flags: 0x200000000000040(head|node=0|zone=2) [ 11.059567] page_type: f5(slab) [ 11.059690] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 11.060387] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 11.060812] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 11.061059] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 11.061410] head: 0200000000000003 ffffea00040ad001 00000000ffffffff 00000000ffffffff [ 11.061847] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 11.062300] page dumped because: kasan: bad access detected [ 11.062623] [ 11.062753] Memory state around the buggy address: [ 11.063032] ffff888102b45e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 11.063326] ffff888102b45e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 11.063541] >ffff888102b45f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.064152] ^ [ 11.064351] ffff888102b45f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.064832] ffff888102b46000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.065150] ==================================================================