Messages in this thread | | | Date | Sat, 26 May 2018 02:29:01 -0700 | Subject | Re: WARNING in bpf_int_jit_compile | From | syzbot <> |
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syzbot has found a reproducer for the following crash on:
HEAD commit: 62d18ecfa641 Merge tag 'arm64-fixes' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14c6bf57800000 kernel config: https://syzkaller.appspot.com/x/.config?x=982e2df1b9e60b02 dashboard link: https://syzkaller.appspot.com/bug?extid=9e762b52dd17e616a7a5 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=130e42b7800000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+9e762b52dd17e616a7a5@syzkaller.appspotmail.com
RAX: ffffffffffffffda RBX: 0000000002542914 RCX: 0000000000455a09 RDX: 0000000000000048 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000046 R14: 00000000006f4730 R15: 0000000000000023 WARNING: CPU: 0 PID: 4752 at include/linux/filter.h:667 bpf_jit_binary_lock_ro include/linux/filter.h:667 [inline] WARNING: CPU: 0 PID: 4752 at include/linux/filter.h:667 bpf_int_jit_compile+0xbf7/0xef7 arch/x86/net/bpf_jit_comp.c:1271 Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 4752 Comm: syz-executor0 Not tainted 4.17.0-rc6+ #67 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 panic+0x22f/0x4de kernel/panic.c:184 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 RIP: 0010:bpf_jit_binary_lock_ro include/linux/filter.h:667 [inline] RIP: 0010:bpf_int_jit_compile+0xbf7/0xef7 arch/x86/net/bpf_jit_comp.c:1271 RSP: 0018:ffff8801d85ff920 EFLAGS: 00010293 RAX: ffff8801d78c40c0 RBX: 0000000000000046 RCX: ffffffff81445d89 RDX: 0000000000000000 RSI: ffffffff81445d97 RDI: 0000000000000005 RBP: ffff8801d85ffa40 R08: ffff8801d78c40c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9000194e002 R13: ffff8801d85ffa18 R14: 00000000fffffff4 R15: 0000000000000003 bpf_prog_select_runtime+0x131/0x640 kernel/bpf/core.c:1541 bpf_prog_load+0x16c2/0x2070 kernel/bpf/syscall.c:1333 __do_sys_bpf kernel/bpf/syscall.c:2073 [inline] __se_sys_bpf kernel/bpf/syscall.c:2035 [inline] __x64_sys_bpf+0x389/0x4c0 kernel/bpf/syscall.c:2035 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455a09 RSP: 002b:00007ffec3da2868 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000002542914 RCX: 0000000000455a09 RDX: 0000000000000048 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000046 R14: 00000000006f4730 R15: 0000000000000023 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..
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