Cc: Muchun Hello, syzbot found the following issue on: HEAD commit: 559089e0a93d vmalloc: replace VM_NO_HUGE_VMAP with VM_ALLO.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10853220f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=2e1f9b9947966f42 dashboard link: https://syzkaller.appspot.com/bug?extid=ffe71f1ff7f8061bcc98 compiler: aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ffe71f1ff7f8061bcc98@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2216 at mm/kfence/core.c:1022 __kfence_free+0x84/0xc0 mm/kfence/core.c:1022 Modules linked in: CPU: 0 PID: 2216 Comm: syz-executor.0 Not tainted 5.18.0-rc3-syzkaller-00007-g559089e0a93d #0 Hardware name: linux,dummy-virt (DT) pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __kfence_free+0x84/0xc0 mm/kfence/core.c:1022 lr : kfence_free include/linux/kfence.h:186 [inline] lr : __slab_free+0x2e4/0x4d4 mm/slub.c:3315 sp : ffff80000a9fb980 x29: ffff80000a9fb980 x28: ffff80000a280040 x27: f2ff000002c01c00 x26: ffff00007b694040 x25: ffff00007b694000 x24: 0000000000000001 x23: ffff00007b694000 x22: ffff00007b694000 x21: f2ff000002c01c00 x20: ffff80000821accc x19: fffffc0001eda500 x18: 0000000000000002 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000001 x13: 000000000005eb7f x12: f7ff000007a08024 x11: f7ff000007a08000 x10: 0000000000000000 x9 : 0000000000000014 x8 : 0000000000000001 x7 : 0000000000094000 x6 : ffff80000a280000 x5 : ffff80000821accc x4 : ffff80000a50e078 x3 : ffff80000a280348 x2 : f0ff00001e325c00 x1 : ffff80000a522b40 x0 : ffff00007b694000 Call trace: __kfence_free+0x84/0xc0 mm/kfence/core.c:1022 kfence_free include/linux/kfence.h:186 [inline] __slab_free+0x2e4/0x4d4 mm/slub.c:3315 do_slab_free mm/slub.c:3498 [inline] slab_free mm/slub.c:3511 [inline] kfree+0x320/0x37c mm/slub.c:4552 kvfree+0x3c/0x50 mm/util.c:615 xt_free_table_info+0x78/0x90 net/netfilter/x_tables.c:1212 __do_replace+0x240/0x330 net/ipv6/netfilter/ip6_tables.c:1104 do_replace net/ipv6/netfilter/ip6_tables.c:1157 [inline] do_ip6t_set_ctl+0x374/0x4e0 net/ipv6/netfilter/ip6_tables.c:1639 nf_setsockopt+0x68/0x94 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0xa8/0x220 net/ipv6/ipv6_sockglue.c:1026 tcp_setsockopt+0x38/0xdb4 net/ipv4/tcp.c:3696 sock_common_setsockopt+0x1c/0x30 net/core/sock.c:3505 __sys_setsockopt+0xa0/0x1c0 net/socket.c:2180 __do_sys_setsockopt net/socket.c:2191 [inline] __se_sys_setsockopt net/socket.c:2188 [inline] __arm64_sys_setsockopt+0x2c/0x40 net/socket.c:2188 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52 el0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142 do_el0_svc+0x6c/0x84 arch/arm64/kernel/syscall.c:181 el0_svc+0x44/0xb0 arch/arm64/kernel/entry-common.c:616 el0t_64_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:634 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:581 ---[ end trace 0000000000000000 ]--- --- 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.
