Hello, syzbot found the following issue on: HEAD commit: 9f162193d6e4 radix-tree: replace gfp.h inclusion with gfp_.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=166b56f3080000 kernel config: https://syzkaller.appspot.com/x/.config?x=f6bcb425ba129b87 dashboard link: https://syzkaller.appspot.com/bug?extid=6b418544e63ef025d64e compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6b418544e63ef025d64e@xxxxxxxxxxxxxxxxxxxxxxxxx input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 ACPI: button: Sleep Button [SLPF] ACPI: \_SB_.LNKC: Enabled at IRQ 11 virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKD: Enabled at IRQ 10 virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKB: Enabled at IRQ 10 virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver N_HDLC line discipline registered with maxframe=4096 Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A Non-volatile memory driver v1.3 Linux agpgart interface v0.103 ACPI: bus type drm_connector registered [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 Console: switching to colour frame buffer device 128x48 platform vkms: [drm] fb0: vkmsdrmfb frame buffer device usbcore: registered new interface driver udl brd: module loaded loop: module loaded zram: Added device: zram0 null_blk: disk nullb0 created null_blk: module loaded Guest personality initialized and is inactive VMCI host device registered (name=vmci, major=10, minor=120) Initialized host personality usbcore: registered new interface driver rtsx_usb usbcore: registered new interface driver viperboard usbcore: registered new interface driver dln2 usbcore: registered new interface driver pn533_usb nfcsim 0.2 initialized usbcore: registered new interface driver port100 usbcore: registered new interface driver nfcmrvl Loading iSCSI transport class v2.0-870. scsi host0: Virtio SCSI HBA st: Version 20160209, fixed bufsize 32768, s/g segs 256 Rounding down aligned max_sectors from 4294967295 to 4294967288 db_root: cannot open: /etc/target slram: not enough parameters. ftl_cs: FTL header not found. wireguard: WireGuard 1.0.0 loaded. See www.wireguard.com for information. wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@xxxxxxxxx>. All Rights Reserved. eql: Equalizer2002: Simon Janes (simon@xxxxxxx) and David S. Miller (davem@xxxxxxxxxx) MACsec IEEE 802.1AE tun: Universal TUN/TAP device driver, 1.6 BUG: unable to handle page fault for address: ffffdc0000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 11826067 P4D 11826067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-syzkaller-14377-g9f162193d6e4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:strlen+0x1a/0x90 lib/string.c:487 Code: e8 db 51 a6 fd 48 8b 74 24 08 48 8b 3c 24 eb c0 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 89 fd 48 c1 ea 03 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 48 80 7d 00 00 RSP: 0000:ffffc90000067588 EFLAGS: 00010296 RAX: dffffc0000000000 RBX: ffff8881472f8008 RCX: 0000000000000000 RDX: 1fffe00000000000 RSI: ffff88814727b000 RDI: ffff000000000000 RBP: ffff000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801e795600 R13: ffff88814727b190 R14: 0000000000000003 R15: ffff000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffdc0000000000 CR3: 000000000bc8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __fortify_strlen include/linux/fortify-string.h:141 [inline] insert_entry fs/proc/proc_sysctl.c:164 [inline] insert_header+0x2c0/0xf90 fs/proc/proc_sysctl.c:259 __register_sysctl_table+0x6fb/0x10a0 fs/proc/proc_sysctl.c:1379 __devinet_sysctl_register+0x156/0x280 net/ipv4/devinet.c:2586 devinet_sysctl_register net/ipv4/devinet.c:2626 [inline] devinet_sysctl_register+0x160/0x230 net/ipv4/devinet.c:2616 inetdev_init+0x286/0x580 net/ipv4/devinet.c:279 inetdev_event+0xa85/0x1610 net/ipv4/devinet.c:1534 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945 call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] register_netdevice+0x1127/0x1680 net/core/dev.c:10103 virtnet_probe+0x1378/0x2f30 drivers/net/virtio_net.c:3929 virtio_dev_probe+0x577/0x870 drivers/virtio/virtio.c:305 call_driver_probe drivers/base/dd.c:530 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:609 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778 __driver_attach+0x223/0x550 drivers/base/dd.c:1150 bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:301 bus_add_driver+0x4c9/0x640 drivers/base/bus.c:618 driver_register+0x220/0x3a0 drivers/base/driver.c:240 virtio_net_driver_init+0x93/0xd2 drivers/net/virtio_net.c:4108 do_one_initcall+0xfe/0x650 init/main.c:1296 do_initcall_level init/main.c:1369 [inline] do_initcalls init/main.c:1385 [inline] do_basic_setup init/main.c:1404 [inline] kernel_init_freeable+0x6b1/0x73a init/main.c:1611 kernel_init+0x1a/0x1d0 init/main.c:1500 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> Modules linked in: CR2: ffffdc0000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:strlen+0x1a/0x90 lib/string.c:487 Code: e8 db 51 a6 fd 48 8b 74 24 08 48 8b 3c 24 eb c0 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 89 fd 48 c1 ea 03 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 48 80 7d 00 00 RSP: 0000:ffffc90000067588 EFLAGS: 00010296 RAX: dffffc0000000000 RBX: ffff8881472f8008 RCX: 0000000000000000 RDX: 1fffe00000000000 RSI: ffff88814727b000 RDI: ffff000000000000 RBP: ffff000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801e795600 R13: ffff88814727b190 R14: 0000000000000003 R15: ffff000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffdc0000000000 CR3: 000000000bc8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 db 51 a6 fd callq 0xfda651e0 5: 48 8b 74 24 08 mov 0x8(%rsp),%rsi a: 48 8b 3c 24 mov (%rsp),%rdi e: eb c0 jmp 0xffffffd0 10: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 17: fc ff df 1a: 48 89 fa mov %rdi,%rdx 1d: 55 push %rbp 1e: 48 89 fd mov %rdi,%rbp 21: 48 c1 ea 03 shr $0x3,%rdx 25: 53 push %rbx 26: 48 83 ec 08 sub $0x8,%rsp * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 48 89 fa mov %rdi,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 04 jg 0x3c 38: 84 c0 test %al,%al 3a: 75 48 jne 0x84 3c: 80 7d 00 00 cmpb $0x0,0x0(%rbp) --- This report is generated by a bot. 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