------------[ cut here ]------------
WARNING: CPU: 1 PID: 5831 at kernel/signal.c:2008 posixtimer_send_sigqueue+0x9da/0xbc0 kernel/signal.c:2008
Modules linked in:
CPU: 1 UID: 0 PID: 5831 Comm: syz-executor Not tainted 6.12.0-rc6-next-20241108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:posixtimer_send_sigqueue+0x9da/0xbc0 kernel/signal.c:2008
Code: df 80 3c 08 00 74 08 48 89 df e8 c1 ad a5 00 4c 89 2b eb 51 e8 a7 32 3b 00 41 be 02 00 00 00 e9 e9 fd ff ff e8 97 32 3b 00 90 <0f> 0b 90 e9 f2 fa ff ff 4c 89 ef e8 86 33 5a 03 84 c0 0f 84 aa 01
RSP: 0018:ffffc90000a18c00 EFLAGS: 00010006
RAX: ffffffff81644979 RBX: 0000000000000001 RCX: ffff888033bc1e00
RDX: 0000000000010000 RSI: 0000000000000021 RDI: 0000000000000009
RBP: ffffc90000a18cf8 R08: ffffffff816450cc R09: 1ffffffff2857112
R10: dffffc0000000000 R11: fffffbfff2857113 R12: ffff88802272a264
R13: 1ffff110044e544c R14: ffff88802272a1e0 R15: ffff88802272a2a0
FS:  000055558524d500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000344c4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 posix_timer_queue_signal kernel/time/posix-timers.c:308 [inline]
 posix_timer_fn+0xe2/0x160 kernel/time/posix-timers.c:323
 __run_hrtimer kernel/time/hrtimer.c:1739 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d 94 86 91 0c 48 89 de 5b e9 c3 5d 5e 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d4 03 00 65 8b 15 a0 58 64 7e 81 e2 00 01 ff 00
RSP: 0018:ffffc900045372b8 EFLAGS: 00000246
RAX: ffffffff81efd9e2 RBX: ffffea0001d47948 RCX: ffff888033bc1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900045376d0 R08: ffffffff81efd9cb R09: 1ffffffff203910e
R10: dffffc0000000000 R11: fffffbfff203910f R12: ffffea0001d47988
R13: 1ffffd40003a8f31 R14: 1ffff920008a6eac R15: 0000000000000001
 arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
 page_fixed_fake_head include/linux/page-flags.h:205 [inline]
 _compound_head include/linux/page-flags.h:246 [inline]
 copy_present_ptes mm/memory.c:992 [inline]
 copy_pte_range mm/memory.c:1173 [inline]
 copy_pmd_range+0xa52/0x7eb0 mm/memory.c:1261
 copy_pud_range mm/memory.c:1298 [inline]
 copy_p4d_range mm/memory.c:1322 [inline]
 copy_page_range+0x99f/0xe90 mm/memory.c:1420
 dup_mmap kernel/fork.c:745 [inline]
 dup_mm kernel/fork.c:1672 [inline]
 copy_mm+0x122b/0x1f60 kernel/fork.c:1721
 copy_process+0x1845/0x3d50 kernel/fork.c:2372
 kernel_clone+0x226/0x8f0 kernel/fork.c:2784
 __do_sys_clone kernel/fork.c:2927 [inline]
 __se_sys_clone kernel/fork.c:2911 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2911
 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: 0033:0x7fb994974f93
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffc30d62c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb994974f93
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 000055558524d7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000022808 R14: 000000000002278a R15: 00007ffc30d62df0
 </TASK>
----------------
Code disassembly (best guess):
   0:	8b 3d 94 86 91 0c    	mov    0xc918694(%rip),%edi        # 0xc91869a
   6:	48 89 de             	mov    %rbx,%rsi
   9:	5b                   	pop    %rbx
   a:	e9 c3 5d 5e 00       	jmp    0x5e5dd2
   f:	0f 1f 00             	nopl   (%rax)
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 04 24          	mov    (%rsp),%rax
* 2a:	65 48 8b 0c 25 c0 d4 	mov    %gs:0x3d4c0,%rcx <-- trapping instruction
  31:	03 00
  33:	65 8b 15 a0 58 64 7e 	mov    %gs:0x7e6458a0(%rip),%edx        # 0x7e6458da
  3a:	81 e2 00 01 ff 00    	and    $0xff0100,%edx