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IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready 8021q: adding VLAN 0 to HW filter on device batadv0 IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready refcount_t overflow at refcount_add arch/x86/include/asm/refcount.h:43 [inline] in syz-executor.0[7357], uid/euid: 0/0 refcount_t overflow at skb_set_owner_w+0x1f8/0x300 net/core/sock.c:1846 in syz-executor.0[7357], uid/euid: 0/0 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7357 at kernel/panic.c:613 refcount_error_report+0x1b2/0x210 kernel/panic.c:613 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7357 Comm: syz-executor.0 Not tainted 4.14.157-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x2f/0x2f kernel/panic.c:547 report_bug+0x216/0x254 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:refcount_error_report+0x1b2/0x210 kernel/panic.c:613 RSP: 0018:ffff888097d773b0 EFLAGS: 00010286 RAX: 0000000000000059 RBX: ffff888097d775c8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff86ac2f80 RDI: ffffed1012faee6c RBP: ffff888097d773e8 R08: 0000000000000059 R09: ffff888076196b20 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff86a81e20 R13: 0000000000000000 R14: ffff888076196280 R15: 0000000000000006 ex_handler_refcount+0x126/0x1a0 arch/x86/mm/extable.c:78 fixup_exception+0x8b/0xb9 arch/x86/mm/extable.c:197 do_trap_no_signal arch/x86/kernel/traps.c:208 [inline] do_trap+0x65/0x250 arch/x86/kernel/traps.c:257 do_error_trap+0x153/0x310 arch/x86/kernel/traps.c:301 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:refcount_add arch/x86/include/asm/refcount.h:43 [inline] RIP: 0010:skb_set_owner_w+0x1f8/0x300 net/core/sock.c:1846 RSP: 0018:ffff888097d77670 EFLAGS: 00010a82 RAX: 0000000000040100 RBX: ffff88809e685400 RCX: ffff88809dac787c RDX: 1ffff11013cd0a9c RSI: ffff88809dac7640 RDI: ffff88809e6854e0 RBP: ffff888097d77690 R08: 1ffff110313c8c90 R09: ffff888189e46480 R10: ffffed10313c8c94 R11: ffff888189e464a3 R12: ffff88809dac7640 R13: ffff88809e685460 R14: ffff88809e685418 R15: ffff88809dac7640 sock_wmalloc+0xc6/0xf0 net/core/sock.c:1932 ip_append_page+0x5fd/0xe40 net/ipv4/ip_output.c:1243 udp_sendpage+0x176/0x3e0 net/ipv4/udp.c:1155 inet_sendpage+0x157/0x580 net/ipv4/af_inet.c:779 kernel_sendpage+0x92/0xf0 net/socket.c:3406 sock_sendpage+0x8b/0xc0 net/socket.c:871 pipe_to_sendpage+0x242/0x340 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x348/0x780 fs/splice.c:626 splice_from_pipe+0xf0/0x150 fs/splice.c:661 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x123/0x190 fs/splice.c:1018 splice_direct_to_actor+0x29e/0x7b0 fs/splice.c:973 do_splice_direct+0x18d/0x230 fs/splice.c:1061 do_sendfile+0x4db/0xbd0 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0x102/0x110 fs/read_write.c:1488 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a679 RSP: 002b:00007f624d297c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a679 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010001 R11: 0000000000000246 R12: 00007f624d2986d4 R13: 00000000004c8d9f R14: 00000000004e0670 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/12/02 00:16 | linux-4.14.y | fbc5fe7a54d0 | f879db37 | .config | console log | report | syz | ci2-linux-4-14 |