Messages in this thread |  | | Date | Sun, 29 Apr 2018 09:10:02 -0700 | Subject | WARNING: ODEBUG bug in del_timer | From | syzbot <> |
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Hello,
syzbot hit the following crash on net-next commit af201bab50a89aa6cf4df952b2c3bf55895c8eee (Fri Apr 27 15:12:10 2018 +0000) udp: remove stray export symbol syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=03faa2dc16b8b64be396
So far this crash happened 26 times on net-next. C reproducer: https://syzkaller.appspot.com/x/repro.c?id=5925539139289088 syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=4983245594689536 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5476181675606016 Kernel config: https://syzkaller.appspot.com/x/.config?id=4410550353033654931 compiler: gcc (GCC) 8.0.1 20180413 (experimental)
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+03faa2dc16b8b64be396@syzkaller.appspotmail.com It will help syzbot understand when the bug is fixed. See footer for details. If you forward the report, please keep this part and the footer.
random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) WARNING: CPU: 1 PID: 4490 at lib/debugobjects.c:329 debug_print_object+0x16a/0x210 lib/debugobjects.c:326 Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 4490 Comm: syz-executor609 Not tainted 4.17.0-rc2+ #23 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:debug_print_object+0x16a/0x210 lib/debugobjects.c:326 RSP: 0018:ffff8801af1e7880 EFLAGS: 00010086 RAX: 0000000000000061 RBX: 0000000000000005 RCX: ffffffff818433e8 RDX: 0000000000000000 RSI: ffffffff8160f561 RDI: 0000000000000001 RBP: ffff8801af1e78c0 R08: ffff8801afa62100 R09: ffffed003b5e3eb2 R10: ffffed003b5e3eb2 R11: ffff8801daf1f597 R12: 0000000000000001 R13: ffffffff88d96cc0 R14: ffffffff87fa34e0 R15: ffffffff81666d30 debug_object_assert_init+0x309/0x500 lib/debugobjects.c:692 debug_timer_assert_init kernel/time/timer.c:724 [inline] debug_assert_init kernel/time/timer.c:776 [inline] del_timer+0x74/0x140 kernel/time/timer.c:1198 try_to_grab_pending+0x439/0x9a0 kernel/workqueue.c:1223 mod_delayed_work_on+0x91/0x250 kernel/workqueue.c:1592 mod_delayed_work include/linux/workqueue.h:541 [inline] smc_setsockopt+0x33d/0x630 net/smc/af_smc.c:1353 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903 __do_sys_setsockopt net/socket.c:1914 [inline] __se_sys_setsockopt net/socket.c:1911 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43fd09 RSP: 002b:00007ffe1f251c58 EFLAGS: 00000207 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd09 RDX: 0000000000000001 RSI: 0000000000000006 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000004 R09: 00000000004002c8 R10: 0000000020000180 R11: 0000000000000207 R12: 0000000000401630 R13: 00000000004016c0 R14: 0000000000000000 R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..
--- This bug is generated by a dumb bot. It may contain errors. See https://goo.gl/tpsmEJ for details. Direct all questions to syzkaller@googlegroups.com.
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