RIP: 0010:synchronize_rcu+0x0/0x360 kernel/rcu/tree.c:4010
Code: Unable to access opcode bytes at 0x1ffff920013c6ee6.
RSP: 7880:0000000000000a02 EFLAGS: 1ffff920013c6f0c
==================================================================
BUG: KASAN: stack-out-of-bounds in __show_regs+0xa6/0x610 arch/x86/kernel/process_64.c:83
Read of size 8 at addr ffffc90009e377d8 by task swapper/0/0

CPU: 0 UID: 0 PID: 0 Comm: swapper/0 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+0xa6/0x610 arch/x86/kernel/process_64.c:83
 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:raw_spin_rq_unlock_irq+0x19/0x90 kernel/sched/sched.h:1494
Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 48 89 fb eb 18 48 89 df e8 5e a3 5e 0a e8 79 70 36 00 fb 5b <41> 5e 41 5f c3 cc cc cc cc f3 0f 1e fa 49 bf 00 00 00 00 00 fc ff
RSP: 0018:ffffffff8e607b48 EFLAGS: 00000286
RAX: 55af1bc50daebb00 RBX: ffff8880b923ea00 RCX: ffffffff94f2f903
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c607c40
RBP: ffffffff8e607d48 R08: ffffffff9017d76f R09: 1ffffffff202faed
R10: dffffc0000000000 R11: fffffbfff202faee R12: ffff8880b923f508
R13: 0000000000000000 R14: ffff8880b923f798 R15: dffffc0000000000
 __schedule+0x1a3a/0x4a60 kernel/sched/core.c:6607
 schedule_idle+0x53/0x90 kernel/sched/core.c:6721
 do_idle+0x56a/0x5d0 kernel/sched/idle.c:354
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
 rest_init+0x2dc/0x300 init/main.c:747
 start_kernel+0x47a/0x500 init/main.c:1103
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
 common_startup_64+0x13e/0x147
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc90009e30000, ffffc90009e39000) 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:0x8f7 pfn:0x5fdc1
memcg:ffff888023e4d582
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 00000000000008f7 0000000000000000 00000001ffffffff ffff888023e4d582
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 7179, tgid 7179 (syz.4.297), ts 508077280724, free_ts 505170952945
 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
 __do_sys_clone3 kernel/fork.c:3092 [inline]
 __se_sys_clone3+0x2cb/0x350 kernel/fork.c:3071
 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
page last free pid 40 tgid 40 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1094 [inline]
 free_unref_folios+0x103a/0x1b00 mm/page_alloc.c:2660
 folios_put_refs+0x76e/0x860 mm/swap.c:1039
 folio_batch_release include/linux/pagevec.h:101 [inline]
 truncate_inode_pages_range+0x47b/0xfc0 mm/truncate.c:346
 inode_go_inval+0xfa/0x2c0 fs/gfs2/glops.c:367
 do_xmote+0x6dc/0x1250 fs/gfs2/glock.c:754
 glock_work_func+0x343/0x5c0 fs/gfs2/glock.c:1107
 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:
 ffffc90009e37680: 00 00 00 00 f2 f2 f2 f2 00 00 00 00 00 f3 f3 f3
 ffffc90009e37700: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90009e37780: f1 f1 f1 f1 00 f2 f2 f2 00 f3 f3 f3 00 00 00 00
                                                    ^
 ffffc90009e37800: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
 ffffc90009e37880: 00 f2 f2 f2 00 f3 f3 f3 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
   0:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	41 57                	push   %r15
  13:	41 56                	push   %r14
  15:	53                   	push   %rbx
  16:	48 89 fb             	mov    %rdi,%rbx
  19:	eb 18                	jmp    0x33
  1b:	48 89 df             	mov    %rbx,%rdi
  1e:	e8 5e a3 5e 0a       	call   0xa5ea381
  23:	e8 79 70 36 00       	call   0x3670a1
  28:	fb                   	sti
  29:	5b                   	pop    %rbx
* 2a:	41 5e                	pop    %r14 <-- trapping instruction
  2c:	41 5f                	pop    %r15
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	f3 0f 1e fa          	endbr64
  37:	49                   	rex.WB
  38:	bf 00 00 00 00       	mov    $0x0,%edi
  3d:	00 fc                	add    %bh,%ah
  3f:	ff                   	.byte 0xff