syzbot


WARNING: ODEBUG bug in rfcomm_dlc_free
Status: upstream: reported C repro on 2018/07/31 06:34
Reported-by: syzbot+1f6d4ad860c650c2f215@syzkaller.appspotmail.com
First crash: 1395d, last: 817d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: no output from test machine (log)
Repro: C syz .config

Fix bisection: failed (bisect log)
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING: ODEBUG bug in rfcomm_dlc_free C done 16 800d 1033d 1/1 fixed on 2020/04/16 05:11
linux-4.19 WARNING: ODEBUG bug in rfcomm_dlc_free C done 21 801d 1033d 1/1 fixed on 2020/04/14 11:07

Sample crash report:
------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: rfcomm_dlc_timeout+0x0/0xe0 net/bluetooth/rfcomm/core.c:1378
WARNING: CPU: 0 PID: 10703 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 lib/debugobjects.c:485
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 10703 Comm: syz-executor072 Not tainted 5.6.0-rc1-syzkaller #0
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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:485
Code: dd 40 df 91 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 40 df 91 88 48 c7 c7 a0 d4 91 88 e8 a7 b0 9f fd <0f> 0b 83 05 23 ae ff 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3
RSP: 0018:ffffc90002067a48 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815eae46 RDI: fffff5200040cf3b
RBP: ffffc90002067a88 R08: ffff8880a40022c0 R09: ffffed1015d045c9
R10: ffffed1015d045c8 R11: ffff8880ae822e43 R12: 0000000000000001
R13: ffffffff89bb6a60 R14: ffffffff81648840 R15: ffff8880a81775b0
 __debug_check_no_obj_freed lib/debugobjects.c:967 [inline]
 debug_check_no_obj_freed+0x2d6/0x441 lib/debugobjects.c:998
 kfree+0xf8/0x2c0 mm/slab.c:3756
 rfcomm_dlc_free+0x20/0x30 net/bluetooth/rfcomm/core.c:328
 rfcomm_dlc_put include/net/bluetooth/rfcomm.h:258 [inline]
 __rfcomm_create_dev net/bluetooth/rfcomm/tty.c:417 [inline]
 rfcomm_create_dev net/bluetooth/rfcomm/tty.c:486 [inline]
 rfcomm_dev_ioctl+0x1b9d/0x1e80 net/bluetooth/rfcomm/tty.c:588
 rfcomm_sock_ioctl+0x90/0xb0 net/bluetooth/rfcomm/sock.c:902
 sock_do_ioctl+0xd8/0x2f0 net/socket.c:1053
 sock_ioctl+0x3ed/0x790 net/socket.c:1204
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x123/0x180 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:770
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4412c9
Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdc99b96e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9
RDX: 0000000020000100 RSI: 00000000400452c8 RDI: 0000000000000005
RBP: 0000000000019494 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000246 R12: 00000000004020f0
R13: 0000000000402180 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (146):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/02/16 19:49 upstream db70e26e33ee cf914200 .config log report syz C
ci-upstream-kasan-gce-root 2020/02/15 13:07 upstream 2019fc96af22 5d7b90f1 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/02/14 08:26 upstream b19e8c684703 5d7b90f1 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/01/10 14:54 upstream e69ec487b2c7 4de4e9f0 .config log report syz C
ci-upstream-kasan-gce-root 2020/01/09 14:20 upstream b07f636fca1c ddc3e859 .config log report syz C
ci-upstream-kasan-gce-root 2020/01/06 07:55 upstream c79f46a28239 438e1227 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/01/06 05:58 upstream c79f46a28239 438e1227 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/12/28 17:27 upstream bf8d1cd43865 af6b8ef8 .config log report syz C
ci-upstream-kasan-gce-root 2019/12/28 08:05 upstream f4b3974602a5 be5c2c81 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/12/26 18:51 upstream 46cf053efec6 be5c2c81 .config log report syz C
ci-upstream-kasan-gce-root 2019/12/26 18:31 upstream 46cf053efec6 be5c2c81 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/11/05 20:30 upstream a99d8080aaf3 0f3ec414 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/10/31 20:59 upstream e472c64aa4fa a41ca8fa .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/10/29 15:19 upstream 8005803a2ca0 5ea87a66 .config log report syz C
ci-upstream-kasan-gce-root 2019/10/29 12:55 upstream 8005803a2ca0 5ea87a66 .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/10/29 10:26 upstream 8005803a2ca0 5ea87a66 .config log report syz C
ci-upstream-kasan-gce-root 2019/10/27 04:44 upstream f877bee5ea0b 25bb509e .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/10/26 13:05 upstream 8caacaad78b6 413926c5 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/10/23 23:41 upstream 13b86bc4cd64 b602d64b .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/10/18 20:46 upstream 0e2adab6cf28 8c88c9c1 .config log report syz C
ci-upstream-kasan-gce-root 2019/10/18 10:10 upstream 283ea345934d 8c88c9c1 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/10/17 01:16 upstream bc88f85c6c09 8c88c9c1 .config log report syz C
ci-upstream-kasan-gce-root 2019/10/12 06:09 upstream 9e208aa06c21 426631dd .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/10/12 05:26 upstream 9e208aa06c21 426631dd .config log report syz C
ci-upstream-net-this-kasan-gce 2020/01/09 02:23 net 2f806c2a16b3 ddc3e859 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/01/06 01:24 net f11421ba4af7 438e1227 .config log report syz C
ci-upstream-net-this-kasan-gce 2019/12/28 07:17 net bb3d0b8bf5be be5c2c81 .config log report syz C
ci-upstream-net-this-kasan-gce 2019/12/26 18:22 net 095e90e080a5 be5c2c81 .config log report syz C
ci-upstream-net-this-kasan-gce 2019/10/29 15:27 net a793183caa9a 5ea87a66 .config log report syz C
ci-upstream-net-this-kasan-gce 2019/10/25 17:10 net 65921376425f c2e837da .config log report syz C
ci-upstream-net-this-kasan-gce 2019/10/09 00:16 net 503c9addef61 b1ebbfef .config log report syz C
ci-upstream-net-this-kasan-gce 2019/09/29 01:45 net faeacb6ddb13 eb6b9855 .config log report syz C
ci-upstream-net-this-kasan-gce 2019/09/10 22:45 net f794dc2304d8 a60cb4cd .config log report syz C
ci-upstream-net-kasan-gce 2020/01/09 02:27 net-next 53ebeca24a87 ddc3e859 .config log report syz C
ci-upstream-net-kasan-gce 2020/01/05 21:58 net-next 4460985fac06 d646e21f .config log report syz C
ci-upstream-net-kasan-gce 2019/12/28 06:20 net-next 9e41fbf3dd38 be5c2c81 .config log report syz C
ci-upstream-net-kasan-gce 2019/12/26 18:21 net-next 9f6cff995e98 be5c2c81 .config log report syz C
ci-upstream-net-kasan-gce 2019/10/29 10:51 net-next d5a721c96a44 5ea87a66 .config log report syz C
ci-upstream-net-kasan-gce 2019/10/25 14:22 net-next 503a64635d5e d01bb02a .config log report syz C
ci-upstream-net-kasan-gce 2019/10/08 23:52 net-next f9867b51d268 b1ebbfef .config log report syz C
ci-upstream-net-kasan-gce 2019/10/01 23:21 net-next 5be5515a8ea1 b7a87a83 .config log report syz C
ci-upstream-net-kasan-gce 2019/09/29 01:18 net-next b41dae061bbd eb6b9855 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/02/28 13:49 linux-next bdc5461b23ca 59b57593 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/01/11 03:11 linux-next 6c09d7dbb7d3 4de4e9f0 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/01/03 21:48 linux-next 7ddd09fc4b74 9dcc1191 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/01/02 12:16 linux-next 7ddd09fc4b74 25a0186e .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/11/22 17:15 linux-next b9d3d0140506 598ca6c8 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/11/17 19:06 linux-next 5a6fcbeabe3e d5696d51 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/10/30 17:00 linux-next fdbc6c104f95 5ea87a66 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/10/15 17:04 linux-next 0e9d28bc6c81 b5268b89 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2018/08/05 05:58 linux-next 116b181bb646 3476a2df .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/11/16 05:52 upstream eb70e26cd79d cdac920b .config log report
ci-upstream-kasan-gce-selinux-root 2019/09/18 13:12 upstream 35f7a9526615 c2dcd700 .config log report
ci-upstream-kasan-gce-root 2019/04/20 09:42 upstream 371dd432ab39 b0e8efcb .config log report
ci-upstream-kasan-gce-selinux-root 2018/09/22 06:47 upstream 10dc890d4228 37079712 .config log report
ci-upstream-kasan-gce-root 2018/09/05 05:19 upstream 28619527b8a7 a4718693 .config log report
ci-upstream-kasan-gce-root 2018/09/01 21:34 upstream 360bd62dc494 a4718693 .config log report
ci-upstream-kasan-gce-root 2018/08/19 22:41 upstream 2ad0d5269970 2dc4378f .config log report
ci-upstream-kasan-gce-root 2018/08/19 20:39 upstream 08b5fa819970 2dc4378f .config log report
ci-upstream-kasan-gce-root 2018/08/18 15:18 upstream 1f7a4c73a739 db1858f6 .config log report
ci-upstream-kasan-gce-root 2018/08/18 10:41 upstream 1f7a4c73a739 db1858f6 .config log report
ci-upstream-kasan-gce-root 2018/08/08 08:45 upstream 1236568ee3cb 1beb8136 .config log report
ci-upstream-kasan-gce-root 2018/07/31 05:46 upstream 527838d470e3 1a381291 .config log report
ci-upstream-net-this-kasan-gce 2020/01/16 16:43 net 567110f147b3 3de7aabb .config log report
ci-upstream-net-this-kasan-gce 2020/01/15 00:11 net f8d7408a4d7f fa12bd3c .config log report
ci-upstream-net-this-kasan-gce 2019/10/01 17:46 net 68ce6688a5ba b7a87a83 .config log report
ci-upstream-net-this-kasan-gce 2019/09/13 17:11 net 8f6617badcc9 40fa42bc .config log report
ci-upstream-net-this-kasan-gce 2019/09/12 08:41 net f4b752a6b270 f4e53c10 .config log report
ci-upstream-net-this-kasan-gce 2019/09/11 03:15 net f794dc2304d8 a60cb4cd .config log report
ci-upstream-net-this-kasan-gce 2019/09/06 00:21 net 7bdf4de12677 040fda58 .config log report
ci-upstream-net-this-kasan-gce 2019/08/25 22:39 net e0e6d0628225 d21c5d9d .config log report
ci-upstream-net-this-kasan-gce 2019/08/22 12:14 net aad12c239418 984250d5 .config log report
ci-upstream-net-this-kasan-gce 2019/08/22 08:55 net aad12c239418 984250d5 .config log report
ci-upstream-net-this-kasan-gce 2019/04/12 18:03 net e30584509659 8916f5e1 .config log report
ci-upstream-net-kasan-gce 2019/12/25 04:11 net-next ac80010fc94e be5c2c81 .config log report
ci-upstream-net-kasan-gce 2019/09/27 01:46 net-next b41dae061bbd 2f1548bc .config log report
ci-upstream-net-kasan-gce 2019/09/24 09:08 net-next b41dae061bbd c68252d2 .config log report
ci-upstream-net-kasan-gce 2019/09/23 11:03 net-next b41dae061bbd d96e88f3 .config log report
ci-upstream-net-kasan-gce 2019/09/22 06:42 net-next b41dae061bbd d96e88f3 .config log report
ci-upstream-net-kasan-gce 2019/09/18 18:30 net-next 1bab8d4c488b c2dcd700 .config log report
ci-upstream-net-kasan-gce 2019/09/16 02:03 net-next a3d3c74da49c 32d59357 .config log report
ci-upstream-net-kasan-gce 2019/08/31 03:34 net-next d00ee466a07e fd37b39e .config log report
ci-upstream-net-kasan-gce 2019/08/30 06:03 net-next d00ee466a07e fd37b39e .config log report
ci-upstream-net-kasan-gce 2019/08/29 10:43 net-next d00ee466a07e fd37b39e .config log report
ci-upstream-net-kasan-gce 2019/08/29 07:03 net-next d00ee466a07e fd37b39e .config log report
ci-upstream-net-kasan-gce 2019/08/13 14:53 net-next 53f6f391786e 8620c2c2 .config log report
ci-upstream-net-kasan-gce 2019/07/29 14:13 net-next 31cc088a4f5d c85e1c5b .config log report
ci-upstream-net-kasan-gce 2019/07/29 13:06 net-next 31cc088a4f5d c85e1c5b .config log report
ci-upstream-net-kasan-gce 2019/05/09 05:45 net-next 80f232121b69 1ab4c999 .config log report
ci-upstream-net-kasan-gce 2019/05/08 16:03 net-next a55a385d8c84 a7383bfa .config log report
ci-upstream-net-kasan-gce 2019/05/08 05:01 net-next a55a385d8c84 a7383bfa .config log report
ci-upstream-linux-next-kasan-gce-root 2019/04/20 22:51 linux-next 3f018f4a019a b0e8efcb .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/06 14:16 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/11 11:08 linux-next 4110b42356f3 7a88b141 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/30 19:02 linux-next d1e0b8e0cb7a 1a381291 .config log report