Date
July 15, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.115820] ================================================================== [ 15.115939] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 15.118247] Read of size 1 at addr fff00000c591d53f by task kunit_try_catch/139 [ 15.118298] [ 15.118336] CPU: 1 UID: 0 PID: 139 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.118416] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.118441] Hardware name: linux,dummy-virt (DT) [ 15.118472] Call trace: [ 15.118494] show_stack+0x20/0x38 (C) [ 15.118543] dump_stack_lvl+0x8c/0xd0 [ 15.118590] print_report+0x118/0x5d0 [ 15.118637] kasan_report+0xdc/0x128 [ 15.118681] __asan_report_load1_noabort+0x20/0x30 [ 15.118731] kmalloc_oob_left+0x2ec/0x320 [ 15.118776] kunit_try_run_case+0x170/0x3f0 [ 15.118824] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.118876] kthread+0x328/0x630 [ 15.118917] ret_from_fork+0x10/0x20 [ 15.118964] [ 15.118981] Allocated by task 26: [ 15.119011] kasan_save_stack+0x3c/0x68 [ 15.119049] kasan_save_track+0x20/0x40 [ 15.119086] kasan_save_alloc_info+0x40/0x58 [ 15.119124] __kasan_kmalloc+0xd4/0xd8 [ 15.119159] __kmalloc_node_track_caller_noprof+0x194/0x4b8 [ 15.119212] kstrdup+0x54/0xc8 [ 15.119243] devtmpfs_work_loop+0x6f8/0xa58 [ 15.119283] devtmpfsd+0x50/0x58 [ 15.119316] kthread+0x328/0x630 [ 15.119346] ret_from_fork+0x10/0x20 [ 15.119380] [ 15.119411] Freed by task 26: [ 15.119445] kasan_save_stack+0x3c/0x68 [ 15.119481] kasan_save_track+0x20/0x40 [ 15.119516] kasan_save_free_info+0x4c/0x78 [ 15.119553] __kasan_slab_free+0x6c/0x98 [ 15.119588] kfree+0x214/0x3c8 [ 15.119620] devtmpfs_work_loop+0x804/0xa58 [ 15.119654] devtmpfsd+0x50/0x58 [ 15.119685] kthread+0x328/0x630 [ 15.119715] ret_from_fork+0x10/0x20 [ 15.119755] [ 15.119776] The buggy address belongs to the object at fff00000c591d520 [ 15.119776] which belongs to the cache kmalloc-16 of size 16 [ 15.119832] The buggy address is located 15 bytes to the right of [ 15.119832] allocated 16-byte region [fff00000c591d520, fff00000c591d530) [ 15.119895] [ 15.119914] The buggy address belongs to the physical page: [ 15.119945] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10591d [ 15.119998] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.120047] page_type: f5(slab) [ 15.120085] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.120134] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.120173] page dumped because: kasan: bad access detected [ 15.121277] [ 15.121301] Memory state around the buggy address: [ 15.121517] fff00000c591d400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.121567] fff00000c591d480: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.121610] >fff00000c591d500: fa fb fc fc fa fb fc fc 00 07 fc fc fc fc fc fc [ 15.121647] ^ [ 15.122031] fff00000c591d580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.122697] fff00000c591d600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.122749] ==================================================================
[ 11.934864] ================================================================== [ 11.935967] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 11.936203] Read of size 1 at addr ffff88810251487f by task kunit_try_catch/155 [ 11.936432] [ 11.936526] CPU: 1 UID: 0 PID: 155 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.936572] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.936583] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.936604] Call Trace: [ 11.936616] <TASK> [ 11.936633] dump_stack_lvl+0x73/0xb0 [ 11.936663] print_report+0xd1/0x610 [ 11.936684] ? __virt_addr_valid+0x1db/0x2d0 [ 11.936709] ? kmalloc_oob_left+0x361/0x3c0 [ 11.936729] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.936752] ? kmalloc_oob_left+0x361/0x3c0 [ 11.936809] kasan_report+0x141/0x180 [ 11.936837] ? kmalloc_oob_left+0x361/0x3c0 [ 11.936863] __asan_report_load1_noabort+0x18/0x20 [ 11.936888] kmalloc_oob_left+0x361/0x3c0 [ 11.936909] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 11.936932] ? __schedule+0x10cc/0x2b60 [ 11.936978] ? __pfx_read_tsc+0x10/0x10 [ 11.937013] ? ktime_get_ts64+0x86/0x230 [ 11.937052] kunit_try_run_case+0x1a5/0x480 [ 11.937104] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.937127] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.937151] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.937175] ? __kthread_parkme+0x82/0x180 [ 11.937197] ? preempt_count_sub+0x50/0x80 [ 11.937221] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.937245] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.937269] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.937294] kthread+0x337/0x6f0 [ 11.937313] ? trace_preempt_on+0x20/0xc0 [ 11.937338] ? __pfx_kthread+0x10/0x10 [ 11.937358] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.937380] ? calculate_sigpending+0x7b/0xa0 [ 11.937404] ? __pfx_kthread+0x10/0x10 [ 11.937436] ret_from_fork+0x116/0x1d0 [ 11.937464] ? __pfx_kthread+0x10/0x10 [ 11.937716] ret_from_fork_asm+0x1a/0x30 [ 11.937748] </TASK> [ 11.937768] [ 11.952538] Allocated by task 1: [ 11.953077] kasan_save_stack+0x45/0x70 [ 11.953255] kasan_save_track+0x18/0x40 [ 11.953415] kasan_save_alloc_info+0x3b/0x50 [ 11.953587] __kasan_kmalloc+0xb7/0xc0 [ 11.953721] __kmalloc_node_track_caller_noprof+0x1cb/0x500 [ 11.953913] kvasprintf+0xc5/0x150 [ 11.954037] __kthread_create_on_node+0x18b/0x3a0 [ 11.954193] kthread_create_on_node+0xab/0xe0 [ 11.954340] create_worker+0x3e5/0x7b0 [ 11.954553] alloc_unbound_pwq+0x8ea/0xdb0 [ 11.954956] apply_wqattrs_prepare+0x332/0xd20 [ 11.955349] apply_workqueue_attrs_locked+0x4d/0xa0 [ 11.955884] alloc_workqueue+0xcc7/0x1ad0 [ 11.956371] latency_fsnotify_init+0x1b/0x50 [ 11.956809] do_one_initcall+0xd8/0x370 [ 11.957039] kernel_init_freeable+0x420/0x6f0 [ 11.957194] kernel_init+0x23/0x1e0 [ 11.957320] ret_from_fork+0x116/0x1d0 [ 11.957928] ret_from_fork_asm+0x1a/0x30 [ 11.958068] [ 11.958138] The buggy address belongs to the object at ffff888102514860 [ 11.958138] which belongs to the cache kmalloc-16 of size 16 [ 11.958892] The buggy address is located 18 bytes to the right of [ 11.958892] allocated 13-byte region [ffff888102514860, ffff88810251486d) [ 11.960176] [ 11.960338] The buggy address belongs to the physical page: [ 11.960904] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102514 [ 11.961790] flags: 0x200000000000000(node=0|zone=2) [ 11.962245] page_type: f5(slab) [ 11.962648] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 11.962955] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 11.963182] page dumped because: kasan: bad access detected [ 11.963407] [ 11.963543] Memory state around the buggy address: [ 11.963719] ffff888102514700: 00 05 fc fc 00 05 fc fc 00 02 fc fc 00 03 fc fc [ 11.964034] ffff888102514780: fa fb fc fc 00 02 fc fc 00 05 fc fc 00 02 fc fc [ 11.964306] >ffff888102514800: 00 02 fc fc 00 02 fc fc 00 02 fc fc 00 05 fc fc [ 11.964631] ^ [ 11.964933] ffff888102514880: 00 07 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.965394] ffff888102514900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.965727] ==================================================================