RAX: dffffc0000000000 RBX: 1ffff92000860ec4 RCX: ffffffff94f2f903
RDX: 0000000000000001 RSI: ffffffff8c0ae240 RDI: ffffffff8c607c40
==================================================================
BUG: KASAN: stack-out-of-bounds in __show_regs+0x172/0x610 arch/x86/kernel/process_64.c:87
Read of size 8 at addr ffffc90004307548 by task syz-executor/5226

CPU: 0 UID: 0 PID: 5226 Comm: syz-executor Not tainted 6.11.0-rc1-next-20240729-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 __show_regs+0x172/0x610 arch/x86/kernel/process_64.c:87
 show_trace_log_lvl+0x3d4/0x520 arch/x86/kernel/dumpstack.c:301
 sched_show_task+0x506/0x6d0 kernel/sched/core.c:7512
 report_rtnl_holders+0x327/0x400 net/core/rtnetlink.c:110
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1843 [inline]
 __run_timers kernel/time/timer.c:2417 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
 run_timer_base kernel/time/timer.c:2437 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__mutex_unlock_slowpath+0x8d/0x750 kernel/locking/mutex.c:909
Code: 24 40 48 c1 e9 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4a 89 04 29 42 c7 44 29 0a f2 f2 00 f3 48 89 4c 24 38 66 42 c7 44 29 0e f3 f3 <48> 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 2d e4 38 f6
RSP: 0018:ffffc9000346fbe0 EFLAGS: 00000a06
RAX: f2f2f200f1f1f1f1 RBX: ffffc9000346fc60 RCX: 1ffff9200068df84
RDX: ffff888024b69e00 RSI: ffffffff89cfe0e0 RDI: ffffffff8fcf04a0
RBP: ffffc9000346fcf0 R08: ffffffff89cfdfe4 R09: 1ffffffff202faed
R10: dffffc0000000000 R11: fffffbfff202faee R12: ffffffff8fcf0560
R13: dffffc0000000000 R14: ffffffff8fcf04a0 R15: ffffffff89cfe0e0
 nf_sockopt_find net/netfilter/nf_sockopt.c:88 [inline]
 nf_setsockopt+0x240/0x2c0 net/netfilter/nf_sockopt.c:98
 do_sock_setsockopt+0x3af/0x720 net/socket.c:2324
 __sys_setsockopt+0x1ae/0x250 net/socket.c:2347
 __do_sys_setsockopt net/socket.c:2356 [inline]
 __se_sys_setsockopt net/socket.c:2353 [inline]
 __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2353
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5165f791aa
Code: ff ff ff c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7
RSP: 002b:00007ffd30b7f178 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5165f791aa
RDX: 0000000000000060 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffd30b7f1e0 R08: 0000000000000408 R09: 00007ffd30b7f577
R10: 00007f51660d0630 R11: 0000000000000246 R12: 00007ffd30b7f18c
R13: 000055555b236590 R14: 000000000005cff8 R15: 00007ffd30b7f8b0
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc90004300000, ffffc90004309000) created by:
 copy_process+0x5d1/0x3d90 kernel/fork.c:2206

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f0f3
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 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 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 12, tgid 12 (kworker/u8:1), ts 10068307674, free_ts 10042510692
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
 prep_new_page mm/page_alloc.c:1501 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3442
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4700
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2263
 vm_area_alloc_pages mm/vmalloc.c:3584 [inline]
 __vmalloc_area_node mm/vmalloc.c:3660 [inline]
 __vmalloc_node_range_noprof+0x971/0x1460 mm/vmalloc.c:3841
 alloc_thread_stack_node kernel/fork.c:314 [inline]
 dup_task_struct+0x444/0x8c0 kernel/fork.c:1115
 copy_process+0x5d1/0x3d90 kernel/fork.c:2206
 kernel_clone+0x226/0x8f0 kernel/fork.c:2788
 user_mode_thread+0x132/0x1a0 kernel/fork.c:2866
 call_usermodehelper_exec_work+0x5c/0x230 kernel/umh.c:172
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
page last free pid 25 tgid 25 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1094 [inline]
 free_unref_page+0xd22/0xea0 mm/page_alloc.c:2612
 vfree+0x186/0x2e0 mm/vmalloc.c:3364
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3285
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffffc90004307400: f2 f2 00 00 00 00 00 00 f2 f2 f2 f2 00 00 00 00
 ffffc90004307480: 00 f3 f3 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
>ffffc90004307500: 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 00 f3 f3 f3
                                              ^
 ffffc90004307580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90004307600: f1 f1 f1 f1 00 f2 f2 f2 00 f3 f3 f3 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
   0:	24 40                	and    $0x40,%al
   2:	48 c1 e9 03          	shr    $0x3,%rcx
   6:	48 b8 f1 f1 f1 f1 00 	movabs $0xf2f2f200f1f1f1f1,%rax
   d:	f2 f2 f2
  10:	4a 89 04 29          	mov    %rax,(%rcx,%r13,1)
  14:	42 c7 44 29 0a f2 f2 	movl   $0xf300f2f2,0xa(%rcx,%r13,1)
  1b:	00 f3
  1d:	48 89 4c 24 38       	mov    %rcx,0x38(%rsp)
  22:	66 42 c7 44 29 0e f3 	movw   $0xf3f3,0xe(%rcx,%r13,1)
  29:	f3
* 2a:	48 89 d8             	mov    %rbx,%rax <-- trapping instruction
  2d:	48 c1 e8 03          	shr    $0x3,%rax
  31:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  36:	74 08                	je     0x40
  38:	48 89 df             	mov    %rbx,%rdi
  3b:	e8 2d e4 38 f6       	call   0xf638e46d