Date
July 20, 2025, 8:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 14.923704] ================================================================== [ 14.923779] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 14.923834] Write of size 1 at addr fff00000c64a5f00 by task kunit_try_catch/145 [ 14.923955] [ 14.923991] CPU: 1 UID: 0 PID: 145 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 14.924086] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.924250] Hardware name: linux,dummy-virt (DT) [ 14.924284] Call trace: [ 14.924323] show_stack+0x20/0x38 (C) [ 14.924639] dump_stack_lvl+0x8c/0xd0 [ 14.924730] print_report+0x118/0x5d0 [ 14.924779] kasan_report+0xdc/0x128 [ 14.924823] __asan_report_store1_noabort+0x20/0x30 [ 14.925127] kmalloc_big_oob_right+0x2a4/0x2f0 [ 14.925313] kunit_try_run_case+0x170/0x3f0 [ 14.925440] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 14.925576] kthread+0x328/0x630 [ 14.925653] ret_from_fork+0x10/0x20 [ 14.925786] [ 14.925806] Allocated by task 145: [ 14.925834] kasan_save_stack+0x3c/0x68 [ 14.926011] kasan_save_track+0x20/0x40 [ 14.926053] kasan_save_alloc_info+0x40/0x58 [ 14.926206] __kasan_kmalloc+0xd4/0xd8 [ 14.926323] __kmalloc_cache_noprof+0x16c/0x3c0 [ 14.926412] kmalloc_big_oob_right+0xb8/0x2f0 [ 14.926550] kunit_try_run_case+0x170/0x3f0 [ 14.926620] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 14.926670] kthread+0x328/0x630 [ 14.926702] ret_from_fork+0x10/0x20 [ 14.926788] [ 14.926810] The buggy address belongs to the object at fff00000c64a4000 [ 14.926810] which belongs to the cache kmalloc-8k of size 8192 [ 14.926869] The buggy address is located 0 bytes to the right of [ 14.926869] allocated 7936-byte region [fff00000c64a4000, fff00000c64a5f00) [ 14.926939] [ 14.926959] The buggy address belongs to the physical page: [ 14.926990] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1064a0 [ 14.927059] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 14.927117] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 14.927169] page_type: f5(slab) [ 14.927226] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 14.927283] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 14.927331] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 14.927393] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 14.927440] head: 0bfffe0000000003 ffffc1ffc3192801 00000000ffffffff 00000000ffffffff [ 14.927492] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 14.927540] page dumped because: kasan: bad access detected [ 14.927579] [ 14.927597] Memory state around the buggy address: [ 14.927629] fff00000c64a5e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 14.927669] fff00000c64a5e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 14.927719] >fff00000c64a5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.927755] ^ [ 14.927783] fff00000c64a5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.927842] fff00000c64a6000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.927879] ==================================================================
[ 12.404500] ================================================================== [ 12.404937] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 12.405185] Write of size 1 at addr ffff888102b11f00 by task kunit_try_catch/162 [ 12.405416] [ 12.405518] CPU: 1 UID: 0 PID: 162 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.405565] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.405577] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.405600] Call Trace: [ 12.405614] <TASK> [ 12.405630] dump_stack_lvl+0x73/0xb0 [ 12.405659] print_report+0xd1/0x610 [ 12.405680] ? __virt_addr_valid+0x1db/0x2d0 [ 12.405702] ? kmalloc_big_oob_right+0x316/0x370 [ 12.405723] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.405745] ? kmalloc_big_oob_right+0x316/0x370 [ 12.405766] kasan_report+0x141/0x180 [ 12.405788] ? kmalloc_big_oob_right+0x316/0x370 [ 12.405814] __asan_report_store1_noabort+0x1b/0x30 [ 12.405837] kmalloc_big_oob_right+0x316/0x370 [ 12.405859] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 12.405881] ? __schedule+0x10c6/0x2b60 [ 12.405903] ? __pfx_read_tsc+0x10/0x10 [ 12.405922] ? ktime_get_ts64+0x86/0x230 [ 12.405945] kunit_try_run_case+0x1a5/0x480 [ 12.405969] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.405990] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.406012] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.406035] ? __kthread_parkme+0x82/0x180 [ 12.406053] ? preempt_count_sub+0x50/0x80 [ 12.406076] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.406099] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.406125] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.406147] kthread+0x337/0x6f0 [ 12.406166] ? trace_preempt_on+0x20/0xc0 [ 12.406188] ? __pfx_kthread+0x10/0x10 [ 12.406208] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.406228] ? calculate_sigpending+0x7b/0xa0 [ 12.406250] ? __pfx_kthread+0x10/0x10 [ 12.406271] ret_from_fork+0x116/0x1d0 [ 12.406288] ? __pfx_kthread+0x10/0x10 [ 12.406308] ret_from_fork_asm+0x1a/0x30 [ 12.406337] </TASK> [ 12.406347] [ 12.421276] Allocated by task 162: [ 12.421605] kasan_save_stack+0x45/0x70 [ 12.422021] kasan_save_track+0x18/0x40 [ 12.422387] kasan_save_alloc_info+0x3b/0x50 [ 12.422951] __kasan_kmalloc+0xb7/0xc0 [ 12.423395] __kmalloc_cache_noprof+0x189/0x420 [ 12.423848] kmalloc_big_oob_right+0xa9/0x370 [ 12.424302] kunit_try_run_case+0x1a5/0x480 [ 12.424692] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.425232] kthread+0x337/0x6f0 [ 12.425630] ret_from_fork+0x116/0x1d0 [ 12.426014] ret_from_fork_asm+0x1a/0x30 [ 12.426460] [ 12.426671] The buggy address belongs to the object at ffff888102b10000 [ 12.426671] which belongs to the cache kmalloc-8k of size 8192 [ 12.427952] The buggy address is located 0 bytes to the right of [ 12.427952] allocated 7936-byte region [ffff888102b10000, ffff888102b11f00) [ 12.429316] [ 12.429510] The buggy address belongs to the physical page: [ 12.429976] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b10 [ 12.430241] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.430510] flags: 0x200000000000040(head|node=0|zone=2) [ 12.431043] page_type: f5(slab) [ 12.431405] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.432142] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.432963] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.433837] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.434625] head: 0200000000000003 ffffea00040ac401 00000000ffffffff 00000000ffffffff [ 12.435144] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 12.435698] page dumped because: kasan: bad access detected [ 12.436270] [ 12.436427] Memory state around the buggy address: [ 12.436805] ffff888102b11e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.437323] ffff888102b11e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.437555] >ffff888102b11f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.437804] ^ [ 12.438164] ffff888102b11f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.438939] ffff888102b12000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.439681] ==================================================================