Date
July 23, 2025, 2:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.071775] ================================================================== [ 15.071884] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 15.071935] Read of size 1 at addr fff00000c3ec409f by task kunit_try_catch/138 [ 15.072058] [ 15.072094] CPU: 1 UID: 0 PID: 138 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 15.072175] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.072201] Hardware name: linux,dummy-virt (DT) [ 15.072447] Call trace: [ 15.072544] show_stack+0x20/0x38 (C) [ 15.072599] dump_stack_lvl+0x8c/0xd0 [ 15.072914] print_report+0x118/0x5d0 [ 15.073063] kasan_report+0xdc/0x128 [ 15.073140] __asan_report_load1_noabort+0x20/0x30 [ 15.073268] kmalloc_oob_left+0x2ec/0x320 [ 15.073314] kunit_try_run_case+0x170/0x3f0 [ 15.073385] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.073448] kthread+0x328/0x630 [ 15.073516] ret_from_fork+0x10/0x20 [ 15.073582] [ 15.073615] Allocated by task 26: [ 15.073739] kasan_save_stack+0x3c/0x68 [ 15.073896] kasan_save_track+0x20/0x40 [ 15.073964] kasan_save_alloc_info+0x40/0x58 [ 15.074029] __kasan_kmalloc+0xd4/0xd8 [ 15.074066] __kmalloc_node_track_caller_noprof+0x194/0x4b8 [ 15.074110] kstrdup+0x54/0xc8 [ 15.074153] devtmpfs_work_loop+0x6f8/0xa58 [ 15.074194] devtmpfsd+0x50/0x58 [ 15.074228] kthread+0x328/0x630 [ 15.074260] ret_from_fork+0x10/0x20 [ 15.074295] [ 15.074327] Freed by task 26: [ 15.074365] kasan_save_stack+0x3c/0x68 [ 15.074412] kasan_save_track+0x20/0x40 [ 15.074457] kasan_save_free_info+0x4c/0x78 [ 15.074495] __kasan_slab_free+0x6c/0x98 [ 15.074531] kfree+0x214/0x3c8 [ 15.074564] devtmpfs_work_loop+0x804/0xa58 [ 15.074600] devtmpfsd+0x50/0x58 [ 15.074631] kthread+0x328/0x630 [ 15.074662] ret_from_fork+0x10/0x20 [ 15.075082] [ 15.075116] The buggy address belongs to the object at fff00000c3ec4080 [ 15.075116] which belongs to the cache kmalloc-16 of size 16 [ 15.075234] The buggy address is located 15 bytes to the right of [ 15.075234] allocated 16-byte region [fff00000c3ec4080, fff00000c3ec4090) [ 15.075394] [ 15.075474] The buggy address belongs to the physical page: [ 15.075577] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ec4 [ 15.075652] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.075844] page_type: f5(slab) [ 15.075955] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 15.076007] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 15.076176] page dumped because: kasan: bad access detected [ 15.076207] [ 15.076224] Memory state around the buggy address: [ 15.076264] fff00000c3ec3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.076307] fff00000c3ec4000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 15.076349] >fff00000c3ec4080: fa fb fc fc 00 07 fc fc fc fc fc fc fc fc fc fc [ 15.076524] ^ [ 15.076634] fff00000c3ec4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.076678] fff00000c3ec4180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.076763] ==================================================================
[ 12.046313] ================================================================== [ 12.046757] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 12.047073] Read of size 1 at addr ffff888102261f5f by task kunit_try_catch/155 [ 12.047358] [ 12.047457] CPU: 0 UID: 0 PID: 155 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 12.047504] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.047517] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.047539] Call Trace: [ 12.047552] <TASK> [ 12.047571] dump_stack_lvl+0x73/0xb0 [ 12.047600] print_report+0xd1/0x610 [ 12.047621] ? __virt_addr_valid+0x1db/0x2d0 [ 12.047643] ? kmalloc_oob_left+0x361/0x3c0 [ 12.047663] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.047684] ? kmalloc_oob_left+0x361/0x3c0 [ 12.047705] kasan_report+0x141/0x180 [ 12.047725] ? kmalloc_oob_left+0x361/0x3c0 [ 12.047750] __asan_report_load1_noabort+0x18/0x20 [ 12.047773] kmalloc_oob_left+0x361/0x3c0 [ 12.047794] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 12.047853] ? __schedule+0x10c6/0x2b60 [ 12.047878] ? __pfx_read_tsc+0x10/0x10 [ 12.047898] ? ktime_get_ts64+0x86/0x230 [ 12.047922] kunit_try_run_case+0x1a5/0x480 [ 12.047948] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.047970] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.047993] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.048015] ? __kthread_parkme+0x82/0x180 [ 12.048035] ? preempt_count_sub+0x50/0x80 [ 12.048058] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.048099] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.048122] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.048159] kthread+0x337/0x6f0 [ 12.048179] ? trace_preempt_on+0x20/0xc0 [ 12.048217] ? __pfx_kthread+0x10/0x10 [ 12.048237] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.048257] ? calculate_sigpending+0x7b/0xa0 [ 12.048281] ? __pfx_kthread+0x10/0x10 [ 12.048302] ret_from_fork+0x116/0x1d0 [ 12.048320] ? __pfx_kthread+0x10/0x10 [ 12.048340] ret_from_fork_asm+0x1a/0x30 [ 12.048370] </TASK> [ 12.048381] [ 12.055469] Allocated by task 1: [ 12.055617] kasan_save_stack+0x45/0x70 [ 12.055825] kasan_save_track+0x18/0x40 [ 12.056006] kasan_save_alloc_info+0x3b/0x50 [ 12.056311] __kasan_kmalloc+0xb7/0xc0 [ 12.056451] __kmalloc_node_track_caller_noprof+0x1cb/0x500 [ 12.056632] kvasprintf+0xc5/0x150 [ 12.056773] __kthread_create_on_node+0x18b/0x3a0 [ 12.057013] kthread_create_on_node+0xab/0xe0 [ 12.057319] create_worker+0x3e5/0x7b0 [ 12.057513] alloc_unbound_pwq+0x8ea/0xdb0 [ 12.057694] apply_wqattrs_prepare+0x332/0xd20 [ 12.057887] apply_workqueue_attrs_locked+0x4d/0xa0 [ 12.058138] alloc_workqueue+0xcc7/0x1ad0 [ 12.058382] latency_fsnotify_init+0x1b/0x50 [ 12.058585] do_one_initcall+0xd8/0x370 [ 12.058759] kernel_init_freeable+0x420/0x6f0 [ 12.058955] kernel_init+0x23/0x1e0 [ 12.059147] ret_from_fork+0x116/0x1d0 [ 12.059367] ret_from_fork_asm+0x1a/0x30 [ 12.059514] [ 12.059588] The buggy address belongs to the object at ffff888102261f40 [ 12.059588] which belongs to the cache kmalloc-16 of size 16 [ 12.060116] The buggy address is located 18 bytes to the right of [ 12.060116] allocated 13-byte region [ffff888102261f40, ffff888102261f4d) [ 12.060761] [ 12.060878] The buggy address belongs to the physical page: [ 12.061148] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102261 [ 12.061460] flags: 0x200000000000000(node=0|zone=2) [ 12.061704] page_type: f5(slab) [ 12.061889] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.062325] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.062661] page dumped because: kasan: bad access detected [ 12.062890] [ 12.062985] Memory state around the buggy address: [ 12.063302] ffff888102261e00: fa fb fc fc 00 02 fc fc 00 05 fc fc 00 02 fc fc [ 12.063570] ffff888102261e80: 00 02 fc fc 00 02 fc fc 00 02 fc fc fa fb fc fc [ 12.063871] >ffff888102261f00: fa fb fc fc fa fb fc fc 00 05 fc fc 00 07 fc fc [ 12.064253] ^ [ 12.064519] ffff888102261f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.064780] ffff888102262000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.065078] ==================================================================