Hello, syzbot found the following issue on: HEAD commit: e3cb714fb489 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=16e55ae3880000 kernel config: https://syzkaller.appspot.com/x/.config?x=ec7118319bfb771e dashboard link: https://syzkaller.appspot.com/bug?extid=2d7f58292cb5b29eb5ad compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1164b38d880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f61223880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/832eb1866f2c/disk-e3cb714f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5fd572b7d96d/vmlinux-e3cb714f.xz kernel image: https://storage.googleapis.com/syzbot-assets/34c82908beda/Image-e3cb714f.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2d7f58292cb5b29eb5ad@xxxxxxxxxxxxxxxxxxxxxxxxx syz-executor414 uses obsolete (PF_INET,SOCK_PACKET) Unable to handle kernel paging request at virtual address 0000000000006020 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000000109d9e000 [0000000000006020] pgd=080000010bb80003, p4d=080000010bb80003, pud=080000010ba1f003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3072 Comm: syz-executor414 Not tainted 6.1.0-rc7-syzkaller-33097-ge3cb714fb489 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : can_rcv_filter+0x30/0x30c net/can/af_can.c:584 lr : can_rcv_filter+0x28/0x30c net/can/af_can.c:578 sp : ffff80000f77b970 x29: ffff80000f77b970 x28: ffff0000c9f2cc80 x27: ffff80000f77bcd0 x26: 0000000000000000 x25: ffff0000c9585300 x24: 0000000000000001 x23: ffff0000c7be3680 x22: 0000000000000000 x21: 0000000000000000 x20: ffff0000c9f2c000 x19: ffff0000c9585300 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000dbe6158 x15: ffff0000c7c98000 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c7c98000 x11: ff8080000b96c6ac x10: 0000000000000000 x9 : 0000000000006020 x8 : ffff0000c7ab2240 x7 : ffff80000b96c9a0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff0000c9585300 x0 : 0000000000000000 Call trace: can_rcv_filter+0x30/0x30c can_receive+0x194/0x26c net/can/af_can.c:664 canfd_rcv+0x7c/0xf8 net/can/af_can.c:703 __netif_receive_skb_one_core net/core/dev.c:5489 [inline] __netif_receive_skb+0x70/0x14c net/core/dev.c:5603 netif_receive_skb_internal+0xb4/0x258 net/core/dev.c:5689 netif_receive_skb+0x28/0x44 net/core/dev.c:5748 tun_rx_batched+0x1e0/0x220 tun_get_user+0xf94/0x1148 drivers/net/tun.c:2004 tun_chr_write_iter+0xa4/0x144 drivers/net/tun.c:2034 call_write_iter include/linux/fs.h:2199 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x2dc/0x46c fs/read_write.c:584 ksys_write+0xb4/0x160 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x24/0x34 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: aa0003f6 9724e4b5 f9406e68 528c0409 (b8696ad4) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa0003f6 mov x22, x0 4: 9724e4b5 bl 0xfffffffffc9392d8 8: f9406e68 ldr x8, [x19, #216] c: 528c0409 mov w9, #0x6020 // #24608 * 10: b8696ad4 ldr w20, [x22, x9] <-- trapping instruction --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
