On Mon, Jul 9, 2018 at 5:09 AM, syzbot <syzbot+df1a417b3485bed2c...@syzkaller.appspotmail.com> wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: ca04b3cca11a Merge tag 'armsoc-fixes' of git://git.kernel... > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=11f1e968400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2ca6c7a31d407f86 > dashboard link: https://syzkaller.appspot.com/bug?extid=df1a417b3485bed2c190 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=17f8f6d0400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15e88a78400000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+df1a417b3485bed2c...@syzkaller.appspotmail.com
#syz fix: bpf: sockhash, disallow bpf_tcp_close and update in parallel > ================================================================== > BUG: KASAN: stack-out-of-bounds in __read_once_size > include/linux/compiler.h:188 [inline] > BUG: KASAN: stack-out-of-bounds in get_running_cputimer > include/linux/sched/cputime.h:85 [inline] > BUG: KASAN: stack-out-of-bounds in account_group_system_time > include/linux/sched/cputime.h:149 [inline] > BUG: KASAN: stack-out-of-bounds in account_system_index_time+0x512/0x5c0 > kernel/sched/cputime.c:168 > Read of size 1 at addr ffff8801afffc278 by task syz-executor708/17155 > > CPU: 1 PID: 17155 Comm: syz-executor708 Not tainted 4.18.0-rc3+ #137 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 > print_address_description+0x6c/0x20b mm/kasan/report.c:256 > kasan_report_error mm/kasan/report.c:354 [inline] > kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 > __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430 > __read_once_size include/linux/compiler.h:188 [inline] > get_running_cputimer include/linux/sched/cputime.h:85 [inline] > account_group_system_time include/linux/sched/cputime.h:149 [inline] > account_system_index_time+0x512/0x5c0 kernel/sched/cputime.c:168 > account_system_time+0x7f/0xb0 kernel/sched/cputime.c:199 > account_process_tick+0x76/0x240 kernel/sched/cputime.c:498 > update_process_times+0x21/0x70 kernel/time/timer.c:1634 > tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 > tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 > __run_hrtimer kernel/time/hrtimer.c:1398 [inline] > __hrtimer_run_queues+0x3eb/0x10c0 kernel/time/hrtimer.c:1460 > hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518 > local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline] > smp_apic_timer_interrupt+0x165/0x730 arch/x86/kernel/apic/apic.c:1050 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863 > </IRQ> > > Allocated by task 905967825: > BUG: unable to handle kernel paging request at ffffffff8c42a180 > PGD 8e6d067 P4D 8e6d067 PUD 8e6e063 PMD 0 > Thread overran stack, or stack corrupted > Oops: 0000 [#1] SMP KASAN > CPU: 1 PID: 17155 Comm: syz-executor708 Not tainted 4.18.0-rc3+ #137 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:depot_fetch_stack+0x10/0x30 lib/stackdepot.c:201 > Code: e8 65 1b 47 fe e9 b3 fd ff ff e8 5b 1b 47 fe e9 55 fd ff ff 90 90 90 > 90 90 90 89 f8 c1 ef 11 25 ff ff 1f 00 81 e7 f0 3f 00 00 <48> 03 3c c5 80 19 > 43 8b 8b 47 0c 48 83 c7 18 c7 46 10 00 00 00 00 > RSP: 0018:ffff8801daf078b8 EFLAGS: 00010006 > RAX: 00000000001ff100 RBX: ffff8801afffc654 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff8801daf078c0 RDI: 0000000000000ff0 > RBP: ffff8801daf078e8 R08: ffff8801adacc6c0 R09: ffffed003b5e3ec2 > R10: ffffed003b5e3ec2 R11: ffff8801daf1f617 R12: ffff8801afffc140 > R13: ffff8801afffc278 R14: ffff8801da97be40 R15: ffff8801afffc650 > FS: 0000000000c14940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffffff8c42a180 CR3: 00000001ae362000 CR4: 00000000001406e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <IRQ> > describe_object mm/kasan/report.c:243 [inline] > print_address_description+0xfb/0x20b mm/kasan/report.c:263 > kasan_report_error mm/kasan/report.c:354 [inline] > kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 > __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430 > __read_once_size include/linux/compiler.h:188 [inline] > get_running_cputimer include/linux/sched/cputime.h:85 [inline] > account_group_system_time include/linux/sched/cputime.h:149 [inline] > account_system_index_time+0x512/0x5c0 kernel/sched/cputime.c:168 > account_system_time+0x7f/0xb0 kernel/sched/cputime.c:199 > account_process_tick+0x76/0x240 kernel/sched/cputime.c:498 > update_process_times+0x21/0x70 kernel/time/timer.c:1634 > tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 > tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 > __run_hrtimer kernel/time/hrtimer.c:1398 [inline] > __hrtimer_run_queues+0x3eb/0x10c0 kernel/time/hrtimer.c:1460 > hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518 > local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline] > smp_apic_timer_interrupt+0x165/0x730 arch/x86/kernel/apic/apic.c:1050 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863 > </IRQ> > Modules linked in: > Dumping ftrace buffer: > (ftrace buffer empty) > CR2: ffffffff8c42a180 > ---[ end trace 9194b6f505fa64d0 ]--- > RIP: 0010:depot_fetch_stack+0x10/0x30 lib/stackdepot.c:201 > Code: e8 65 1b 47 fe e9 b3 fd ff ff e8 5b 1b 47 fe e9 55 fd ff ff 90 90 90 > 90 90 90 89 f8 c1 ef 11 25 ff ff 1f 00 81 e7 f0 3f 00 00 <48> 03 3c c5 80 19 > 43 8b 8b 47 0c 48 83 c7 18 c7 46 10 00 00 00 00 > RSP: 0018:ffff8801daf078b8 EFLAGS: 00010006 > RAX: 00000000001ff100 RBX: ffff8801afffc654 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff8801daf078c0 RDI: 0000000000000ff0 > RBP: ffff8801daf078e8 R08: ffff8801adacc6c0 R09: ffffed003b5e3ec2 > R10: ffffed003b5e3ec2 R11: ffff8801daf1f617 R12: ffff8801afffc140 > R13: ffff8801afffc278 R14: ffff8801da97be40 R15: ffff8801afffc650 > FS: 0000000000c14940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffffff8c42a180 CR3: 00000001ae362000 CR4: 00000000001406e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > 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 syzkal...@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with > syzbot. > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/00000000000000978e05708856cb%40google.com. > For more options, visit https://groups.google.com/d/optout.
