On Thu, 15 Jul 2021, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 98f7fdced2e0 Merge tag 'irq-urgent-2021-07-11' of git://gi.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=13576e9c300000 > kernel config: https://syzkaller.appspot.com/x/.config?x=da2203b984f4af9f > dashboard link: https://syzkaller.appspot.com/bug?extid=2e3ee45ea14cd0b81f26 > compiler: Debian clang version 11.0.1-2 > > Unfortunately, I don't have any reproducer for this issue yet. > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+2e3ee45ea14cd0b81f26@xxxxxxxxxxxxxxxxxxxxxxxxx > > BUG: sleeping function called from invalid context at mm/mlock.c:482 Fixed by 023e1a8dd502 ("mm/rmap: fix new bug: premature return from page_mlock_one()") which went into the tree soon after the HEAD shown above (but was posted before any syzbot report, so contained no syzbot tag). > in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 14373, name: syz-executor.5 > INFO: lockdep is turned off. > Preemption disabled at: > [<0000000000000000>] 0x0 > CPU: 1 PID: 14373 Comm: syz-executor.5 Tainted: G W 5.13.0-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > __dump_stack lib/dump_stack.c:88 [inline] > dump_stack_lvl+0x1d3/0x29f lib/dump_stack.c:105 > ___might_sleep+0x4e5/0x6b0 kernel/sched/core.c:9154 > munlock_vma_pages_range+0xa80/0xf60 mm/mlock.c:482 > mlock_fixup+0x40f/0x580 mm/mlock.c:552 > apply_mlockall_flags mm/mlock.c:768 [inline] > __do_sys_munlockall+0x1ef/0x310 mm/mlock.c:810 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x4665d9 > Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007f448bc37188 EFLAGS: 00000246 ORIG_RAX: 0000000000000098 > RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 > R13: 00007ffe7eb2d2ef R14: 00007f448bc37300 R15: 0000000000022000 > > > --- > This report 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 issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
