==================================================================
BUG: KASAN: slab-out-of-bounds in __trace_probe_log_err+0x290/0x2a0 kernel/trace/trace_probe.c:199
Write of size 1 at addr ffff8881085c26ff by task syz-executor240/634

CPU: 0 PID: 634 Comm: syz-executor240 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x100/0x140 mm/kasan/report.c:452
 __asan_report_store1_noabort+0x17/0x20 mm/kasan/report_generic.c:311
 __trace_probe_log_err+0x290/0x2a0 kernel/trace/trace_probe.c:199
 trace_uprobe_create+0x355/0xb90 kernel/trace/trace_uprobe.c:588
 create_or_delete_trace_uprobe+0x89/0xc0 kernel/trace/trace_uprobe.c:731
 trace_run_command kernel/trace/trace.c:9575 [inline]
 trace_parse_run_command+0x296/0x450 kernel/trace/trace.c:9634
 probes_write+0x34/0x40 kernel/trace/trace_uprobe.c:800
 vfs_write+0x344/0xd70 fs/read_write.c:603
 ksys_write+0x14a/0x260 fs/read_write.c:658
 __do_sys_write fs/read_write.c:670 [inline]
 __se_sys_write fs/read_write.c:667 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:667
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb7902a1639
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffec2c523e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 6e69636172742f2e RCX: 00007fb7902a1639
RDX: 0000000000000015 RSI: 0000200000000700 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009
R10: 0000000000000009 R11: 0000000000000246 R12: 000000000000678c
R13: 00007ffec2c523fc R14: 00007ffec2c52410 R15: 00007ffec2c52400

Allocated by task 1:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc mm/kasan/common.c:509 [inline]
 __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 __kmalloc+0x19f/0x330 mm/slub.c:4038
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 kobject_get_path+0xbf/0x1f0 lib/kobject.c:184
 kobject_uevent_env+0x28a/0x700 lib/kobject_uevent.c:544
 kobject_uevent+0x1d/0x30 lib/kobject_uevent.c:657
 kernel_add_sysfs_param+0x10b/0x12c kernel/params.c:816
 param_sysfs_builtin+0x183/0x200 kernel/params.c:851
 param_sysfs_init+0x6a/0x6f kernel/params.c:974
 do_one_initcall+0x205/0x5e0 init/main.c:1211
 do_initcall_level+0x174/0x2dc init/main.c:1284
 do_initcalls+0x50/0x92 init/main.c:1300
 do_basic_setup+0x88/0x8f init/main.c:1320
 kernel_init_freeable+0x28c/0x3c3 init/main.c:1524
 kernel_init+0x11/0x1a0 init/main.c:1411
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

The buggy address belongs to the object at ffff8881085c26c0
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 31 bytes to the right of
 32-byte region [ffff8881085c26c0, ffff8881085c26e0)
The buggy address belongs to the page:
page:ffffea0004217080 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1085c2
flags: 0x4000000000000200(slab)
raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100043980
raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 1249573709, free_ts 0
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x176/0x190 mm/page_alloc.c:2462
 get_page_from_freelist+0x225f/0x23f0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x29a/0x640 mm/page_alloc.c:5384
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2f8/0x4c0 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 __kmalloc+0x1f9/0x330 mm/slub.c:4034
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 kobject_get_path+0xbf/0x1f0 lib/kobject.c:184
 kobject_uevent_env+0x28a/0x700 lib/kobject_uevent.c:544
 kobject_uevent+0x1d/0x30 lib/kobject_uevent.c:657
 kernel_add_sysfs_param+0x10b/0x12c kernel/params.c:816
 param_sysfs_builtin+0x183/0x200 kernel/params.c:851
 param_sysfs_init+0x6a/0x6f kernel/params.c:974
 do_one_initcall+0x205/0x5e0 init/main.c:1211
 do_initcall_level+0x174/0x2dc init/main.c:1284
 do_initcalls+0x50/0x92 init/main.c:1300
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8881085c2580: fa fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff8881085c2600: 00 00 00 00 fc fc fc fc fb fb fb fb fc fc fc fc
>ffff8881085c2680: 00 00 00 fc fc fc fc fc fb fb fb fb fc fc fc fc
                                                                ^
 ffff8881085c2700: 00 00 06 fc fc fc fc fc 00 00 00 00 fc fc fc fc
 ffff8881085c2780: 00 00 00 00 fc fc fc fc fa fb fb fb fc fc fc fc
==================================================================