syzbot


WARNING in idr_get_next

Status: fixed on 2021/11/10 00:50
Reported-by: syzbot+f7204dcf3df4bb4ce42c@syzkaller.appspotmail.com
Fix commit: 3cbf7530a163 qrtr: Convert qrtr_ports from IDR to XArray
First crash: 718d, last: 471d

Cause bisection: failed (bisect log)

Fix bisection: fixed by (bisect log) :
commit 43016d02cf6e46edfc4696452251d34bba0c0435
Author: Florian Westphal <fw@strlen.de>
Date: Mon May 3 11:51:15 2021 +0000

  netfilter: arptables: use pernet ops struct during unregister

Patch testing requests:
Created Duration User Patch Repo Result
2020/09/13 20:32 17m anmol.karan123@gmail.com patch upstream OK
2020/09/13 13:19 9m anmol.karan123@gmail.com upstream report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6839 at lib/idr.c:269 idr_get_next+0x33a/0x3a0 lib/idr.c:269
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 6839 Comm: syz-executor121 Not tainted 5.9.0-rc2-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+0x1f0/0x31e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:idr_get_next+0x33a/0x3a0 lib/idr.c:269
Code: 6b 89 2b 65 48 8b 04 25 28 00 00 00 48 3b 44 24 58 75 72 4c 89 f8 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 86 5b b7 fd <0f> 0b 45 31 ff eb d2 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c f7 fc
RSP: 0018:ffffc9000291fd40 EFLAGS: 00010293
RAX: ffffffff83bd9c9a RBX: ffffc9000291fde4 RCX: ffff8880a899a100
RDX: 0000000000000000 RSI: 00000000fffffffc RDI: 000000007fffffff
RBP: 00000000fffffffc R08: ffffffff83bd9c56 R09: fffffbfff13114f8
R10: fffffbfff13114f8 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92000523faf R14: ffff8880aa0175c8 R15: ffff8880a9622040
 qrtr_reset_ports net/qrtr/qrtr.c:734 [inline]
 __qrtr_bind+0x58a/0x7d0 net/qrtr/qrtr.c:777
 qrtr_bind+0x115/0x1a0 net/qrtr/qrtr.c:813
 __sys_bind+0x283/0x360 net/socket.c:1656
 __do_sys_bind net/socket.c:1667 [inline]
 __se_sys_bind net/socket.c:1665 [inline]
 __x64_sys_bind+0x76/0x80 net/socket.c:1665
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x441239
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 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe6f268cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441239
RDX: 000000000000000c RSI: 0000000020000140 RDI: 0000000000000003
RBP: 000000000000aca5 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401fe0
R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (21):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2020/08/29 23:21 upstream 4d41ead6ead9 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/29 13:53 upstream 4d41ead6ead9 d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-root 2020/08/29 10:35 upstream 96d454cd2c16 d5a3ae1f .config log report syz C
ci-upstream-net-this-kasan-gce 2020/08/28 18:42 net 5438dd45831e d5a3ae1f .config log report syz C
ci-upstream-net-kasan-gce 2020/08/28 20:31 net-next 0baf01942d3d d5a3ae1f .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/30 02:44 linux-next b36c969764ab d5a3ae1f .config log report syz C
ci-upstream-kasan-gce-smack-root 2021/04/25 07:00 upstream 8db5efb83fa9 17f0b706 .config log report info WARNING in idr_get_next
ci-upstream-net-this-kasan-gce 2021/05/03 05:37 net bbd6f0a94813 77e2b668 .config log report info WARNING in idr_get_next
ci-upstream-net-kasan-gce 2021/02/11 10:48 net-next dc9d87581d46 a52ee10a .config log report info WARNING in idr_get_next
ci-upstream-linux-next-kasan-gce-root 2021/04/01 11:44 linux-next 931294922e65 6a81331a .config log report info WARNING in idr_get_next
ci-upstream-kasan-gce-smack-root 2021/01/17 09:56 upstream 0da0a8a0a0e1 65a7a854 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/03 09:27 net 4bfc4714849d 79264ae3 .config log report info
ci-upstream-net-this-kasan-gce 2020/12/27 06:46 net 1f45dc220667 821e0b09 .config log report info
ci-upstream-net-this-kasan-gce 2020/12/13 20:22 net 7f376f1917d7 b22a7ec3 .config log report info
ci-upstream-net-this-kasan-gce 2020/12/13 16:28 net 7f376f1917d7 bca53db9 .config log report info
ci-upstream-net-kasan-gce 2021/01/12 16:44 net-next c73a45965dd5 2c1f2513 .config log report info
ci-upstream-net-kasan-gce 2021/01/04 10:28 net-next 3db1a3fa9880 79264ae3 .config log report info
ci-upstream-net-kasan-gce 2020/12/28 23:56 net-next 3db1a3fa9880 8259d56c .config log report info
ci-upstream-net-kasan-gce 2020/12/19 00:03 net-next 3db1a3fa9880 04201c06 .config log report info
ci-upstream-net-kasan-gce 2020/12/14 07:10 net-next 13458ffe0a95 b22a7ec3 .config log report info
ci-upstream-net-kasan-gce 2020/11/26 21:45 net-next 594e31bcebd6 1d2b823e .config log report info