On 2/22/20 7:08 AM, syzbot wrote:
Hello, syzbot found the following crash on: HEAD commit: 0a44cac8 Merge tag 'dma-mapping-5.6' of git://git.infradea.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=152eba29e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=a61f2164c515c07f dashboard link: https://syzkaller.appspot.com/bug?extid=a5df189917e79d5e59c9 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=117a0931e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17d8c109e00000 The bug was bisected to: commit 5ac6badc5aa057ceb1d50c93326a81db6e89ad2f Author: Daniel Mack <daniel@xxxxxxxxxx> Date: Thu Jul 11 12:45:03 2019 +0000 device-tree: bindinds: add NXP PCT2075 as compatible device to LM75
Guess syzbot's bisect mechanism needs a bit of work. Guenter
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15924629e00000 final crash: https://syzkaller.appspot.com/x/report.txt?x=17924629e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=13924629e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+a5df189917e79d5e59c9@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 5ac6badc5aa0 ("device-tree: bindinds: add NXP PCT2075 as compatible device to LM75") BUG: sleeping function called from invalid context at net/core/sock.c:2935 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2687, name: kworker/1:3 INFO: lockdep is turned off. Preemption disabled at: [<ffffffff867b39c7>] sock_hash_free+0xd7/0x460 net/core/sock_map.c:869 CPU: 1 PID: 2687 Comm: kworker/1:3 Not tainted 5.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events bpf_map_free_deferred Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fb/0x318 lib/dump_stack.c:118 ___might_sleep+0x449/0x5e0 kernel/sched/core.c:6798 __might_sleep+0x8f/0x100 kernel/sched/core.c:6751 lock_sock_nested+0x36/0x120 net/core/sock.c:2935 lock_sock include/net/sock.h:1516 [inline] sock_hash_free+0x200/0x460 net/core/sock_map.c:872 bpf_map_free_deferred+0xb2/0x110 kernel/bpf/syscall.c:474 process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264 worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches
