------------[ cut here ]------------ CPU 1 old state 3 new state 1 WARNING: CPU: 1 PID: 7979 at kernel/rcu/srcutree.c:702 srcu_check_nmi_safety+0x10e/0x130 kernel/rcu/srcutree.c:702 Modules linked in: CPU: 1 PID: 7979 Comm: syz-executor.3 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:srcu_check_nmi_safety+0x10e/0x130 kernel/rcu/srcutree.c:702 Code: c0 74 11 3c 03 7f 0d 89 54 24 04 e8 4c 57 77 00 8b 54 24 04 8b b3 c8 01 00 00 44 89 e1 48 c7 c7 60 43 2e 8b e8 b3 a5 dc ff 90 <0f> 0b 90 90 e9 7b ff ff ff e8 24 57 77 00 e9 65 ff ff ff e8 4a 57 RSP: 0018:ffffc90002df77d8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffe8ffad158ec0 RCX: ffffffff81511289 RDX: ffff88801bd3a440 RSI: ffffffff81511296 RDI: 0000000000000001 RBP: ffffc90002e128a8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000003 R12: 0000000000000001 R13: ffffc90002df7b80 R14: ffffc90002e128a8 R15: ffffc90002e12828 FS: 0000000000000000(0000) GS:ffff88802c100000(0063) knlGS:0000000057ca4400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002001a000 CR3: 0000000021332000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: srcu_read_lock include/linux/srcu.h:213 [inline] __kvm_handle_hva_range arch/x86/kvm/../../../virt/kvm/kvm_main.c:615 [inline] kvm_mmu_notifier_invalidate_range_start+0x293/0xb10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:799 mn_hlist_invalidate_range_start mm/mmu_notifier.c:476 [inline] __mmu_notifier_invalidate_range_start+0x3b9/0x8f0 mm/mmu_notifier.c:531 mmu_notifier_invalidate_range_start include/linux/mmu_notifier.h:439 [inline] change_pmd_range mm/mprotect.c:390 [inline] change_pud_range mm/mprotect.c:457 [inline] change_p4d_range mm/mprotect.c:480 [inline] change_protection_range mm/mprotect.c:508 [inline] change_protection+0x28eb/0x35f0 mm/mprotect.c:542 mprotect_fixup+0x548/0xc40 mm/mprotect.c:655 do_mprotect_pkey+0x9cd/0xd60 mm/mprotect.c:820 __do_sys_mprotect mm/mprotect.c:841 [inline] __se_sys_mprotect mm/mprotect.c:838 [inline] __ia32_sys_mprotect+0x75/0xb0 mm/mprotect.c:838 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7262579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ff9005f8 EFLAGS: 00000286 ORIG_RAX: 000000000000007d RAX: ffffffffffffffda RBX: 00000000f5bf3000 RCX: 0000000000020000 RDX: 0000000000000003 RSI: 0000000000001000 RDI: 0000000000021000 RBP: 00000000f5c12b40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi