syzbot


WARNING: ODEBUG bug in del_timer

Status: fixed on 2018/05/16 09:57
Reported-by: syzbot+03faa2dc16b8b64be396@syzkaller.appspotmail.com
Fix commit: 784813aed6ba net/smc: restrict non-blocking connect finish
First crash: 1519d, last: 1501d
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING: ODEBUG bug in del_timer C inconclusive 74 758d 1169d 0/1 upstream: reported C repro on 2019/04/13 05:07
upstream WARNING: ODEBUG bug in del_timer (2) C 6 1499d 1500d 9/22 fixed on 2018/07/09 18:05
linux-4.19 WARNING: ODEBUG bug in del_timer 1 1059d 1059d 0/1 auto-closed as invalid on 2019/11/29 04:56
upstream WARNING: ODEBUG bug in del_timer (3) syz error error 46 1132d 1144d 0/22 upstream: reported syz repro on 2019/05/07 21:06

Sample crash report:
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..

Crashes (200):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2018/04/28 06:24 net-next af201bab50a8 d5a5d045 .config log report syz C
ci-upstream-net-kasan-gce 2018/05/16 07:21 net-next 0b7d9978406f 68ce85f1 .config log report
ci-upstream-net-kasan-gce 2018/05/16 04:44 net-next 0b7d9978406f 68ce85f1 .config log report
ci-upstream-net-kasan-gce 2018/05/15 21:00 net-next 961423f9fcbc 68ce85f1 .config log report
ci-upstream-net-kasan-gce 2018/05/15 16:03 net-next 961423f9fcbc 661fd7b9 .config log report
ci-upstream-net-kasan-gce 2018/05/14 09:10 net-next 289e1f4e9e4a 481f030c .config log report
ci-upstream-net-kasan-gce 2018/05/14 03:18 net-next 289e1f4e9e4a 481f030c .config log report
ci-upstream-net-kasan-gce 2018/05/14 00:06 net-next b2d6cee117f7 481f030c .config log report
ci-upstream-net-kasan-gce 2018/05/13 22:10 net-next b2d6cee117f7 481f030c .config log report
ci-upstream-net-kasan-gce 2018/05/13 20:31 net-next b2d6cee117f7 c05b619d .config log report
ci-upstream-net-kasan-gce 2018/05/13 19:19 net-next b2d6cee117f7 c05b619d .config log report
ci-upstream-net-kasan-gce 2018/05/13 16:32 net-next b2d6cee117f7 c05b619d .config log report
ci-upstream-net-kasan-gce 2018/05/13 10:52 net-next b2d6cee117f7 c05b619d .config log report
ci-upstream-net-kasan-gce 2018/05/13 09:10 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/13 06:32 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/13 01:52 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/12 23:36 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/12 18:32 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/12 17:03 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/12 13:10 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/12 10:17 net-next b2d6cee117f7 e726f42b .config log report
ci-upstream-net-kasan-gce 2018/05/12 04:46 net-next 575b65bc5bff 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/12 01:46 net-next 575b65bc5bff 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/11 12:51 net-next db1617a11a86 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/11 10:10 net-next db1617a11a86 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/11 07:51 net-next db1617a11a86 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/11 01:35 net-next db1617a11a86 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/11 00:31 net-next db1617a11a86 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/10 21:57 net-next db1617a11a86 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/10 19:34 net-next db1617a11a86 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/10 17:39 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/10 16:20 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/10 13:31 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/10 11:59 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/10 09:40 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/09 19:39 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/09 16:38 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/09 15:29 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/09 09:22 net-next 53a7bdfb2a27 12c7428a .config log report
ci-upstream-net-kasan-gce 2018/05/09 05:32 net-next 8d42eada64e4 b88872ba .config log report
ci-upstream-net-kasan-gce 2018/05/08 21:40 net-next 8d42eada64e4 b88872ba .config log report