panic: ASan: Invalid access, 2-byte read in sctp_ss_fcfs_select

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syzbot

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Jul 27, 2021, 2:31:26 AM7/27/21
to syzkaller-f...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: 4783fb730fa1 Revert "loader: support.4th resets the read b..
git tree: https://github.com/freebsd/freebsd-src.git main
console output: https://syzkaller.appspot.com/x/log.txt?x=123c31b2300000
dashboard link: https://syzkaller.appspot.com/bug?extid=aeffcf3383a31862fcf1

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+aeffcf...@syzkaller.appspotmail.com

panic: ASan: Invalid access, 2-byte read at 0xfffffe00a74d7c9e, UMAUseAfterFree(fd)
cpuid = 1
time = 520
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc7/frame 0xfffffe0053b64b10
kdb_backtrace() at kdb_backtrace+0xd3/frame 0xfffffe0053b64c70
vpanic() at vpanic+0x2c5/frame 0xfffffe0053b64d50
panic() at panic+0xb5/frame 0xfffffe0053b64e10
__asan_load2_noabort() at __asan_load2_noabort+0x16e/frame 0xfffffe0053b64ed0
sctp_ss_fcfs_select() at sctp_ss_fcfs_select+0x8a/frame 0xfffffe0053b64f10
sctp_med_chunk_output() at sctp_med_chunk_output+0xb12/frame 0xfffffe0053b65ac0
sctp_chunk_output() at sctp_chunk_output+0x2b25/frame 0xfffffe0053b66710
sctp_timeout_handler() at sctp_timeout_handler+0x17e5/frame 0xfffffe0053b66850
softclock_call_cc() at softclock_call_cc+0x3d9/frame 0xfffffe0053b66a00
softclock() at softclock+0x152/frame 0xfffffe0053b66a50
ithread_loop() at ithread_loop+0x4f1/frame 0xfffffe0053b66bb0
fork_exit() at fork_exit+0xd0/frame 0xfffffe0053b66bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0053b66bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100033 ]
Stopped at kdb_enter+0x6b: movq $0,0x28ed9da(%rip)
db>
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs 0x20
ds 0x3b
es 0x3b
fs 0x13
gs 0x1b
ss 0x28
rax 0x12
rcx 0xfd08eccb6a6d2d04
rdx 0x1
rbx 0
rsp 0xfffffe0053b64c50
rbp 0xfffffe0053b64c70
rsi 0
rdi 0xffffffff817a8739 vprintf+0x319
r8 0x3
r9 0xfffffe0053b64788
r10 0
r11 0
r12 0xfffffe0053df6900
r13 0xfffffe0053b64c01
r14 0xffffffff82c58fc0 .str.18
r15 0xffffffff82c58fc0 .str.18
rip 0xffffffff8179c15b kdb_enter+0x6b
rflags 0x46
kdb_enter+0x6b: movq $0,0x28ed9da(%rip)
db> show proc
Process 12 (intr) at 0xfffffe0053de9a70:
state: NORMAL
uid: 0 gids: 0
parent: pid 0 at 0xffffffff8402aec0
ABI: null
flag: 0x10000284 flag2: 0
reaper: 0xffffffff8402aec0 reapsubtree: 12
sigparent: 20
vmspace: 0xffffffff8402be40
(map 0xffffffff8402be40)
(map.pmap 0xffffffff8402bf00)
(pmap 0xffffffff8402bf60)
threads: 23
100011 I [swi6: task queue]
100012 I [swi6: Giant taskq]
100014 I [swi5: fast taskq]
100031 RunQ [swi1: netisr 0]
100032 I [swi3: vm]
100033 Run CPU 1 [swi4: clock (0)]
100034 I [swi4: clock (1)]
100035 I [swi1: hpts]
100036 I [swi1: hpts]
100049 I [irq24: virtio_pci0]
100050 I [irq25: virtio_pci0]
100051 I [irq26: virtio_pci0]
100052 I [irq27: virtio_pci0]
100053 I [irq28: virtio_pci1]
100054 I [irq29: virtio_pci1]
100055 I [irq30: virtio_pci1]
100056 I [irq31: virtio_pci1]
100057 I [irq32: virtio_pci1]
100062 I [irq10: virtio_pci2]
100064 I [irq1: atkbd0]
100065 I [irq12: psm0]
100066 I [swi0: uart uart++]
100074 I [swi1: pf send]
db> ps
pid ppid pgrp uid state wmesg wchan cmd
7930 799 799 0 T (threaded) syz-executor.3
111534 s syz-executor.3
112326 RunQ syz-executor.3
112334 RunQ syz-executor.3
112335 RunQ syz-executor.3
112341 RunQ syz-executor.3
112342 RunQ syz-executor.3
7929 789 789 0 T (threaded) syz-executor.0
111478 s syz-executor.0
112330 RunQ syz-executor.0
112336 RunQ syz-executor.0
7928 790 790 0 T (threaded) syz-executor.1
111959 s syz-executor.1
112324 RunQ syz-executor.1
7596 1 791 0 S uwait 0xfffffe00a6739380 syz-executor.2
7595 1 791 0 S uwait 0xfffffe00a7496d80 syz-executor.2
7483 1 789 0 S uwait 0xfffffe00a66ee400 syz-executor.0
7471 1 789 0 S uwait 0xfffffe00a7593680 syz-executor.0
7467 1 789 0 S uwait 0xfffffe00a7f91380 syz-executor.0
7453 1 789 0 S uwait 0xfffffe00a6611100 syz-executor.0
7284 1 791 0 S uwait 0xfffffe00a784a900 syz-executor.2
7283 1 791 0 S uwait 0xfffffe00a7f91a80 syz-executor.2
6928 1 790 0 S uwait 0xfffffe00a6739a00 syz-executor.1
6924 1 790 0 S uwait 0xfffffe00a7593b00 syz-executor.1
6914 1 790 0 S uwait 0xfffffe00a7589300 syz-executor.1
6904 1 790 0 S uwait 0xfffffe00a7496700 syz-executor.1
6900 1 790 0 S uwait 0xfffffe00a784ab80 syz-executor.1
6613 1 799 0 SV uwait 0xfffffe00a6739600 syz-executor.3
6604 1 799 0 SV uwait 0xfffffe009e3d5480 syz-executor.3
6590 1 799 0 SV uwait 0xfffffe00a7589100 syz-executor.3
6582 1 799 0 SV uwait 0xfffffe00a784a180 syz-executor.3
6581 1 799 0 SV uwait 0xfffffe00a7593900 syz-executor.3
6439 1 789 0 SV uwait 0xfffffe00a784a080 syz-executor.0
6437 1 789 0 SV uwait 0xfffffe00a7f91d00 syz-executor.0
5932 1 790 0 S uwait 0xfffffe00a7496580 syz-executor.1
5930 1 799 0 S uwait 0xfffffe009e531a80 syz-executor.3
5920 1 790 0 S uwait 0xfffffe009e3d5600 syz-executor.1
5918 1 799 0 S uwait 0xfffffe00a6739000 syz-executor.3
5908 1 799 0 S uwait 0xfffffe00a7593800 syz-executor.3
5906 1 790 0 S uwait 0xfffffe00a66ee200 syz-executor.1
5904 1 791 0 S uwait 0xfffffe00a66eee80 syz-executor.2
5901 1 791 0 S uwait 0xfffffe00a66ee300 syz-executor.2
5897 1 791 0 S uwait 0xfffffe0058831000 syz-executor.2
5894 1 791 0 S uwait 0xfffffe00a663f480 syz-executor.2
5891 1 791 0 S uwait 0xfffffe00a7589e80 syz-executor.2
5887 1 791 0 S uwait 0xfffffe00a7589c80 syz-executor.2
5881 1 791 0 S uwait 0xfffffe00a6611680 syz-executor.2
5565 1 791 0 S uwait 0xfffffe00a7593e00 syz-executor.2
5564 1 791 0 S uwait 0xfffffe0058831200 syz-executor.2
5535 1 790 0 S umtxn 0xfffffe00a7496b80 syz-executor.1
5526 1 790 0 S uwait 0xfffffe00a7589780 syz-executor.1
5515 1 790 0 S uwait 0xfffffe00a7589600 syz-executor.1
5508 1 790 0 S uwait 0xfffffe00a7593c00 syz-executor.1
5505 1 790 0 S uwait 0xfffffe00a6739700 syz-executor.1
4625 1 791 0 S uwait 0xfffffe00a7496a80 syz-executor.2
4622 1 791 0 S uwait 0xfffffe00a73ba500 syz-executor.2
4620 1 791 0 S uwait 0xfffffe00a6739f00 syz-executor.2
4616 1 790 0 S uwait 0xfffffe00a6739100 syz-executor.1
4614 1 790 0 S uwait 0xfffffe00a7496980 syz-executor.1
4609 1 790 0 S uwait 0xfffffe00a7496880 syz-executor.1
4606 1 790 0 S uwait 0xfffffe00a66ee500 syz-executor.1
4604 1 790 0 S uwait 0xfffffe009e3d5500 syz-executor.1
4498 1 790 0 S uwait 0xfffffe00a7496380 syz-executor.1
4494 1 789 0 S uwait 0xfffffe00a7589b80 syz-executor.0
4489 1 799 0 S uwait 0xfffffe009e3d5880 syz-executor.3
4487 1 790 0 S uwait 0xfffffe00a6622280 syz-executor.1
4484 1 789 0 S uwait 0xfffffe00a7589a80 syz-executor.0
4483 1 791 0 S uwait 0xfffffe00a73bac00 syz-executor.2
4478 1 790 0 S uwait 0xfffffe00a73ba700 syz-executor.1
4474 1 799 0 S uwait 0xfffffe009e3d5680 syz-executor.3
4473 1 789 0 S uwait 0xfffffe00a73ba000 syz-executor.0
4472 1 791 0 S uwait 0xfffffe00a6739e80 syz-executor.2
4467 1 799 0 S uwait 0xfffffe00a7496180 syz-executor.3
4466 1 791 0 S uwait 0xfffffe00a73ba400 syz-executor.2
4457 1 799 0 S uwait 0xfffffe00a73ba600 syz-executor.3
4449 1 799 0 S uwait 0xfffffe00a6739500 syz-executor.3
4211 1 799 0 S uwait 0xfffffe00a73ba300 syz-executor.3
4210 1 790 0 S uwait 0xfffffe00a6611e80 syz-executor.1
4207 1 799 0 S uwait 0xfffffe00a73bae00 syz-executor.3
4200 1 790 0 S uwait 0xfffffe00a66ee680 syz-executor.1
4192 1 799 0 S uwait 0xfffffe005838f200 syz-executor.3
4190 1 790 0 S uwait 0xfffffe00a73ba200 syz-executor.1
4187 1 791 0 S uwait 0xfffffe00a7496c80 syz-executor.2
4184 1 791 0 S uwait 0xfffffe009e3d5400 syz-executor.2
4182 1 791 0 S uwait 0xfffffe0058831e00 syz-executor.2
4180 1 791 0 S uwait 0xfffffe00a7496080 syz-executor.2
4177 1 791 0 S uwait 0xfffffe009e3d5700 syz-executor.2
4173 1 791 0 S uwait 0xfffffe00a663f280 syz-executor.2
4171 1 791 0 S uwait 0xfffffe00a73baa00 syz-executor.2
4169 1 791 0 S uwait 0xfffffe00a73ba100 syz-executor.2
4167 1 791 0 S uwait 0xfffffe00a73ba900 syz-executor.2
4164 1 791 0 S uwait 0xfffffe00a7496480 syz-executor.2
4162 1 791 0 S uwait 0xfffffe00a66eec80 syz-executor.2
3845 1 789 0 S uwait 0xfffffe00a6622000 syz-executor.0
3844 1 789 0 S uwait 0xfffffe00a663f580 syz-executor.0
2724 1 799 0 S uwait 0xfffffe005838f000 syz-executor.3
2719 1 799 0 S uwait 0xfffffe00a73bab00 syz-executor.3
2712 1 790 0 S uwait 0xfffffe00a663f380 syz-executor.1
2711 1 799 0 S uwait 0xfffffe00a663f880 syz-executor.3
2709 1 791 0 S uwait 0xfffffe00a73bad00 syz-executor.2
2705 1 790 0 S uwait 0xfffffe00a73ba800 syz-executor.1
2702 1 789 0 S uwait 0xfffffe00a66eea80 syz-executor.0
2699 1 799 0 S uwait 0xfffffe009e531000 syz-executor.3
2698 1 790 0 S uwait 0xfffffe005873de80 syz-executor.1
2695 1 790 0 S uwait 0xfffffe00a6739e00 syz-executor.1
2693 1 790 0 S uwait 0xfffffe00a66ee980 syz-executor.1
2691 1 790 0 S uwait 0xfffffe00a663f080 syz-executor.1
2689 1 790 0 S uwait 0xfffffe0058831e80 syz-executor.1
2687 1 790 0 S uwait 0xfffffe00a6622100 syz-executor.1
2686 1 799 0 S uwait 0xfffffe00a6739b00 syz-executor.3
2684 1 791 0 S uwait 0xfffffe005838f100 syz-executor.2
2683 1 789 0 S uwait 0xfffffe009e531500 syz-executor.0
2679 1 799 0 S uwait 0xfffffe009e531100 syz-executor.3
2678 1 790 0 S uwait 0xfffffe00a66eeb80 syz-executor.1
2676 1 789 0 S uwait 0xfffffe009e2d2900 syz-executor.0
2675 1 791 0 S uwait 0xfffffe00a6739d00 syz-executor.2
2668 1 799 0 S uwait 0xfffffe00a663f180 syz-executor.3
2663 1 799 0 S uwait 0xfffffe00a663f980 syz-executor.3
2184 1 2184 65 Ss select 0xfffffe00a4e167c0 dhclient
1916 1 1916 0 Ss select 0xfffffe0056b76040 dhclient
1913 1 1913 0 Ss select 0xfffffe00a4e162c0 dhclient
1881 1 1881 65 Ss select 0xfffffe00a4e164c0 dhclient
1635 0 0 0 DL aiordy 0xfffffe0058919000 [aiod4]
1634 0 0 0 DL aiordy 0xfffffe00a6615a70 [aiod3]
1633 0 0 0 DL aiordy 0xfffffe00a1d2b000 [aiod2]
1632 0 0 0 DL aiordy 0xfffffe00a1d2b538 [aiod1]
1623 1 1623 0 Ss select 0xfffffe00a4e16f40 dhclient
1619 1 1619 0 Ss select 0xfffffe00a4e16ec0 dhclient
1594 1 1594 65 Ss select 0xfffffe00573e7dc0 dhclient
1428 1 1428 0 Ss select 0xfffffe0056b74740 dhclient
1425 1 1425 0 Ss select 0xfffffe0056b74bc0 dhclient
1401 1 1401 65 Ss select 0xfffffe00573e7b40 dhclient
1035 1 1035 0 Ss select 0xfffffe0056b74cc0 dhclient
1032 1 1032 0 Ss select 0xfffffe0056b74dc0 dhclient
799 780 799 0 Rs syz-executor.3
791 780 791 0 Rs CPU 0 syz-executor.2
790 780 790 0 Ss wait 0xfffffe009e52b538 syz-executor.1
789 780 789 0 Ss wait 0xfffffe009e40f000 syz-executor.0
780 778 778 0 R (threaded) syz-fuzzer
100116 S uwait 0xfffffe009e531b80 syz-fuzzer
100117 RunQ syz-fuzzer
100118 S uwait 0xfffffe009e531d80 syz-fuzzer
100119 RunQ syz-fuzzer
100120 S uwait 0xfffffe009e3d5000 syz-fuzzer
100121 S uwait 0xfffffe005873dc80 syz-fuzzer
100122 S kqread 0xfffffe009bf3c300 syz-fuzzer
100123 S uwait 0xfffffe005873dd80 syz-fuzzer
100124 S uwait 0xfffffe009e3d5200 syz-fuzzer
778 776 778 0 Ss pause 0xfffffe00587360b0 csh
776 694 776 0 Ss select 0xfffffe0056b74b40 sshd
760 1 760 0 Ss+ ttyin 0xfffffe0056fdecb0 getty
759 1 759 0 Ss+ ttyin 0xfffffe00583ee0b0 getty
758 1 758 0 Ss+ ttyin 0xfffffe00583ee4b0 getty
757 1 757 0 Ss+ ttyin 0xfffffe00583ee8b0 getty
756 1 756 0 Ss+ ttyin 0xfffffe00583eecb0 getty
755 1 755 0 Ss+ ttyin 0xfffffe00583940b0 getty
754 1 754 0 Ss+ ttyin 0xfffffe00583944b0 getty
753 1 753 0 Ss+ ttyin 0xfffffe00583948b0 getty
752 1 752 0 Ss+ ttyin 0xfffffe0058394cb0 getty
698 1 698 0 Ss nanslp 0xffffffff84056a00 cron
694 1 694 0 Ss select 0xfffffe00573e7bc0 sshd
507 1 507 0 Ss select 0xfffffe0056b74f40 syslogd
436 1 436 0 Ss select 0xfffffe0056b74ec0 devd
435 1 435 65 Ss select 0xfffffe00573e7c40 dhclient
350 1 350 0 Ss select 0xfffffe0056b730c0 dhclient
347 1 347 0 Ss select 0xfffffe00573e7cc0 dhclient
23 0 0 0 DL syncer 0xffffffff8417cc00 [syncer]
22 0 0 0 DL vlruwt 0xfffffe0058736a70 [vnlru]
21 0 0 0 DL (threaded) [bufdaemon]
100084 D qsleep 0xffffffff8417aa40 [bufdaemon]
100087 D - 0xffffffff83411f80 [bufspacedaemon-0]
100098 D sdflush 0xfffffe0056fc14e8 [/ worker]
20 0 0 0 DL psleep 0xffffffff841b2ec0 [vmdaemon]
19 0 0 0 DL (threaded) [pagedaemon]
100082 D psleep 0xffffffff841a69f8 [dom0]
100088 D launds 0xffffffff841a6a04 [laundry: dom0]
100089 D umarcl 0xffffffff81e93450 [uma]
18 0 0 0 DL - 0xffffffff83e0db60 [rand_harvestq]
17 0 0 0 DL waiting 0xffffffff84c61460 [sctp_iterator]
16 0 0 0 DL pftm 0xffffffff8474de20 [pf purge]
15 0 0 0 DL - 0xffffffff84175ec0 [soaiod4]
9 0 0 0 DL - 0xffffffff84175ec0 [soaiod3]
8 0 0 0 DL - 0xffffffff84175ec0 [soaiod2]
7 0 0 0 DL - 0xffffffff84175ec0 [soaiod1]
6 0 0 0 DL (threaded) [cam]
100047 D - 0xffffffff83c932c0 [doneq0]
100048 D - 0xffffffff83c93240 [async]
100081 D - 0xffffffff83c930c0 [scanner]
14 0 0 0 DL seqstat 0xfffffe0007919888 [sequencer 00]
5 0 0 0 DL crypto_ 0xfffffe0053e0fc80 [crypto returns 1]
4 0 0 0 DL crypto_ 0xfffffe0053e0fc30 [crypto returns 0]
3 0 0 0 DL crypto_ 0xffffffff841a0aa0 [crypto]
13 0 0 0 DL (threaded) [geom]
100038 D - 0xffffffff84029fc0 [g_event]
100039 D - 0xffffffff8402a000 [g_up]
100040 D - 0xffffffff8402a040 [g_down]
2 0 0 0 DL (threaded) [KTLS]
100029 D - 0xfffffe0053e0fe00 [thr_0]
100030 D - 0xfffffe0053e0fe80 [thr_1]
12 0 0 0 RL (threaded) [intr]
100011 I [swi6: task queue]
100012 I [swi6: Giant taskq]
100014 I [swi5: fast taskq]
100031 RunQ [swi1: netisr 0]
100032 I [swi3: vm]
100033 Run CPU 1 [swi4: clock (0)]
100034 I [swi4: clock (1)]
100035 I [swi1: hpts]
100036 I [swi1: hpts]
100049 I [irq24: virtio_pci0]
100050 I [irq25: virtio_pci0]
100051 I [irq26: virtio_pci0]
100052 I [irq27: virtio_pci0]
100053 I [irq28: virtio_pci1]
100054 I [irq29: virtio_pci1]
100055 I [irq30: virtio_pci1]
100056 I [irq31: virtio_pci1]
100057 I [irq32: virtio_pci1]
100062 I [irq10: virtio_pci2]
100064 I [irq1: atkbd0]
100065 I [irq12: psm0]
100066 I [swi0: uart uart++]
100074 I [swi1: pf send]
11 0 0 0 RL (threaded) [idle]
100003 CanRun [idle: cpu0]
100004 CanRun [idle: cpu1]
1 0 1 0 SLs wait 0xfffffe0053d4b538 [init]
10 0 0 0 DL audit_w 0xffffffff841a1a40 [audit]
0 0 0 0 RLs (threaded) [kernel]
100000 D swapin 0xffffffff8402aec0 [swapper]
100005 D - 0xfffffe000791c500 [softirq_0]
100006 RunQ [softirq_1]
100007 D - 0xfffffe000791c300 [if_io_tqg_0]
100008 D - 0xfffffe000791c200 [if_io_tqg_1]
100009 D - 0xfffffe000791c100 [if_config_tqg_0]
100010 D - 0xfffffe0053dde500 [deferred_unmount ta]
100013 RunQ [thread taskq]
100015 D - 0xfffffe0053df1c00 [linuxkpi_irq_wq]
100016 D - 0xfffffe0053df1b00 [kqueue_ctx taskq]
100017 D - 0xfffffe0053df1a00 [aiod_kick taskq]
100018 D - 0xfffffe0053df1900 [pci_hp taskq]
100019 D - 0xfffffe0053df1800 [inm_free taskq]
100020 D - 0xfffffe0053df1700 [in6m_free taskq]
100021 D - 0xfffffe0053df1600 [linuxkpi_short_wq_0]
100022 D - 0xfffffe0053df1600 [linuxkpi_short_wq_1]
100023 D - 0xfffffe0053df1600 [linuxkpi_short_wq_2]
100024 D - 0xfffffe0053df1600 [linuxkpi_short_wq_3]
100025 D - 0xfffffe0053df1500 [linuxkpi_long_wq_0]
100026 D - 0xfffffe0053df1500 [linuxkpi_long_wq_1]
100027 D - 0xfffffe0053df1500 [linuxkpi_long_wq_2]
100028 D - 0xfffffe0053df1500 [linuxkpi_long_wq_3]
100037 D - 0xfffffe0054140c00 [firmware taskq]
100041 D - 0xfffffe0054140b00 [crypto_0]
100042 D - 0xfffffe0054140b00 [crypto_1]
100058 D - 0xfffffe0054140500 [vtnet0 rxq 0]
100059 D - 0xfffffe0054140400 [vtnet0 txq 0]
100060 D - 0xfffffe0054140300 [vtnet0 rxq 1]
100061 D - 0xfffffe0054140200 [vtnet0 txq 1]
100063 D vtbslp 0xfffffe0056b73100 [virtio_balloon]
100067 D - 0xfffffe0056fb3a00 [mca taskq]
100072 D - 0xffffffff82c5ff40 [deadlkres]
100076 D - 0xfffffe005834bd00 [acpi_task_0]
100077 D - 0xfffffe005834bd00 [acpi_task_1]
100078 D - 0xfffffe005834bd00 [acpi_task_2]
100080 D - 0xfffffe0054140a00 [CAM taskq]
db> show all locks
Process 7930 (syz-executor.3) thread 0xfffffe00a82a1000 (112335)
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe00a8332e88) locked @ /syzkaller/managers/main/kernel/sys/netinet6/sctp6_usrreq.c:870
Process 791 (syz-executor.2) thread 0xfffffe00589093a0 (100096)
shared rw vm object (vm object) r = 0 (0xfffffe00a82edc60) locked @ /syzkaller/managers/main/kernel/sys/vm/vm_fault.c:1332
shared sx vm map (user) (vm map (user)) r = 0 (0xfffffe009e411a50) locked @ /syzkaller/managers/main/kernel/sys/vm/vm_map.c:4935
Process 12 (intr) thread 0xfffffe0053df6900 (100033)
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe00a7321a90) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctputil.c:1768
Process 0 (kernel) thread 0xfffffe0053dedac0 (100013)
exclusive sleep mutex kernel arena (kernel arena) r = 0 (0xffffffff840ab680) locked @ /syzkaller/managers/main/kernel/sys/kern/subr_vmem.c:789
exclusive sleep mutex vmem list lock (vmem list lock) r = 0 (0xffffffff83409bc0) locked @ /syzkaller/managers/main/kernel/sys/kern/subr_vmem.c:784
db> show malloc
Type InUse MemUse Requests
pf_hash 5 11524K 5
devbuf 4216 4338K 4244
tcp_hpts 6 3201K 6
sctp_stro 109 2160K 3407
sysctloid 34320 2027K 34390
vtbuf 24 1968K 46
filedesc 220 1756K 13647
kobj 326 1304K 485
pcb 518 1056K 19411
newblk 9 1026K 14113
vfscache 3 1025K 3
subproc 357 751K 8120
inodedep 27 522K 7392
ufs_quota 1 512K 1
vfs_hash 1 512K 1
callout 2 512K 2
intr 4 472K 4
vmem 3 274K 5
acpica 1674 184K 54514
vnet_data 1 168K 1
sctp_atcl 414 156K 12803
tidhash 3 141K 3
linker 356 140K 396
pagedep 9 130K 6858
tfo_ccache 1 128K 1
DEVFS1 107 107K 124
sem 4 106K 4
BPF 46 88K 81
bus 984 80K 3474
kdtrace 438 78K 20275
mtx_pool 2 72K 2
umtx 572 72K 572
syncache 1 68K 1
acpitask 1 64K 1
ddb_capture 1 64K 1
module 509 64K 509
shm 3 36K 42
temp 36 35K 3158
hostcache 1 32K 1
DEVFS3 126 32K 136
msg 4 30K 4
gtaskqueue 18 26K 18
sctp_stri 46 23K 774
kbdmux 6 22K 6
sctp_atky 523 22K 16649
ifaddr 70 20K 72
DEVFS_RULE 56 20K 56
routetbl 140 19K 797
ufs_mount 4 17K 5
proc 3 17K 3
tty 16 16K 16
ithread 99 16K 99
lltable 46 15K 377
bus-sc 33 14K 1690
kqueue 172 13K 7993
KTRACE 101 13K 4434
ifnet 7 13K 7
ether_multi 152 13K 162
ksem 31 12K 140
kenv 95 12K 95
eventhandler 133 12K 133
pwddesc 168 11K 7895
CAM queue 5 11K 1528
GEOM 61 10K 490
rman 84 10K 425
DEVFSP 144 9K 1582
in6_multi 65 9K 65
bmsafemap 2 9K 7354
UART 12 9K 12
devstat 4 9K 4
sctp_timw 32 8K 32
rpc 2 8K 2
shmfd 1 8K 58
pfs_vncache 1 8K 1
pfs_nodes 20 8K 20
audit_evclass 236 8K 294
cred 28 7K 417
taskqueue 63 7K 63
sctp_athm 414 7K 13117
sglist 5 7K 5
CAM DEV 3 6K 510
plimit 24 6K 689
pf_ifnet 13 5K 123
ufs_dirhash 24 5K 24
dirrem 18 5K 7042
UMA 270 5K 270
session 35 5K 60
vt 11 5K 11
xform 66 5K 2570
pf_table 2 4K 94
pf_osfp 36 4K 36
memdesc 1 4K 1
MCA 32 4K 32
evdev 4 4K 4
kcovinfo 64 4K 68
selfd 57 4K 108148
lockf 33 4K 544
acpisem 28 4K 28
sctp_map 218 4K 6738
hhook 15 4K 17
fpukern_ctx 3 3K 3
inpcbpolicy 96 3K 4564
proc-args 52 3K 751
terminal 11 3K 11
select 20 3K 238
uidinfo 4 3K 42
freefile 18 3K 6941
local_apic 1 2K 1
io_apic 1 2K 1
ipsec-saq 2 2K 2
filedesc_to_leader 31 2K 94
ip6ndp 12 2K 13
Unitno 31 2K 71
sctp_ifa 13 2K 14
CAM XPT 22 2K 543
in_multi 6 2K 8
ipsecpolicy 2 2K 2
acpidev 20 2K 20
msi 9 2K 9
clone 9 2K 9
tun 7 2K 7
freework 5 2K 8990
softdep 1 1K 1
mkdir 8 1K 13518
freeblks 4 1K 6987
sahead 1 1K 1
secasvar 1 1K 1
nhops 6 1K 8
vnodemarker 2 1K 554
NFSD session 1 1K 1
CAM periph 4 1K 271
osd 37 1K 2229
sctp_ifn 6 1K 14
ipsec 3 1K 3
mld 6 1K 6
igmp 6 1K 6
toponodes 6 1K 6
isadev 6 1K 6
mount 16 1K 145
pci_link 10 1K 10
crypto 4 1K 741
encap_export_host 12 1K 12
procdesc 5 1K 18
newdirblk 4 1K 6759
diradd 4 1K 7085
pfil 4 1K 4
cdev 2 1K 2
chacha20random 1 1K 1
tcp_fsb 2 1K 692
NFSD lckfile 1 1K 1
NFSD V4client 1 1K 1
DEVFS 9 1K 10
vnodes 1 1K 6
CAM SIM 2 1K 2
ktls 1 1K 1
feeder 7 1K 7
tcpfunc 3 1K 3
loginclass 3 1K 6
prison 6 1K 6
lkpikmalloc 5 1K 6
aesni_data 2 1K 2
soname 5 1K 12711
pf_rule 1 1K 142
apmdev 1 1K 1
atkbddev 2 1K 2
CAM dev queue 2 1K 2
CAM I/O Scheduler 1 1K 1
CAM path 4 1K 1034
pmchooks 1 1K 1
nexusdev 7 1K 7
filecaps 5 1K 134
sctp_vrf 1 1K 1
ip_msource 1 1K 2
vnet 1 1K 1
entropy 2 1K 50
iov 1 1K 25768
acpiintr 1 1K 1
pmc 1 1K 1
cpus 2 1K 2
vnet_data_free 1 1K 1
Per-cpu 1 1K 1
p1003.1b 1 1K 1
sctp_mcore 0 0K 0
sctp_socko 0 0K 5503
sctp_iter 0 0K 32
sctp_mvrf 0 0K 0
sctp_cpal 0 0K 21
sctp_cmsg 0 0K 0
sctp_stre 0 0K 0
sctp_athi 0 0K 0
sctp_a_it 0 0K 11
sctp_aadr 0 0K 85
tcp_do 0 0K 0
cdg data 0 0K 0
chd data 0 0K 21
dctcp data 0 0K 15
vegas data 0 0K 18
htcp data 0 0K 22
mqdata 0 0K 0
pf_altq 0 0K 0
pf_temp 0 0K 0
cubic data 0 0K 8
NEWdirectio 0 0K 0
NEWNFSnode 0 0K 0
madt_table 0 0K 2
smartpqi 0 0K 0
NFSCL lck 0 0K 0
NFSCL lckown 0 0K 0
NFSCL client 0 0K 0
NFSCL deleg 0 0K 0
NFSCL open 0 0K 0
NFSCL owner 0 0K 0
NFS fh 0 0K 0
NFS req 0 0K 0
iavf 0 0K 0
ixl 0 0K 0
NFSD usrgroup 0 0K 0
NFSD string 0 0K 0
NFSD V4lock 0 0K 0
NFSD V4state 0 0K 0
NFSD srvcache 0 0K 0
ice-resmgr 0 0K 0
ice-osdep 0 0K 0
ice 0 0K 0
axgbe 0 0K 0
msdosfs_fat 0 0K 0
msdosfs_mount 0 0K 0
msdosfs_node 0 0K 0
DEVFS4 0 0K 0
DEVFS2 0 0K 0
xen_intr 0 0K 0
gntdev 0 0K 0
privcmd_dev 0 0K 0
xen_hvm 0 0K 0
legacydrv 0 0K 0
qpidrv 0 0K 0
evtchn_dev 0 0K 0
xenstore 0 0K 0
dmar_idpgtbl 0 0K 0
dmar_dom 0 0K 0
dmar_ctx 0 0K 0
ciss_data 0 0K 0
BACKLIGHT 0 0K 0
xnb 0 0K 0
isci 0 0K 0
iommu_dmamap 0 0K 0
xbbd 0 0K 0
hyperv_socket 0 0K 0
bxe_ilt 0 0K 0
xenbus 0 0K 0
xbd 0 0K 0
Balloon 0 0K 0
sysmouse 0 0K 0
vm_fictitious 0 0K 0
vtfont 0 0K 0
ath_hal 0 0K 0
athdev 0 0K 0
ata_pci 0 0K 0
ata_dma 0 0K 0
ata_generic 0 0K 0
amr 0 0K 0
pvscsi 0 0K 0
scsi_da 0 0K 69
UMAHash 0 0K 0
ata_da 0 0K 0
vm_pgdata 0 0K 0
jblocks 0 0K 0
savedino 0 0K 6229
sentinel 0 0K 0
jfsync 0 0K 0
jtrunc 0 0K 0
sbdep 0 0K 278
jsegdep 0 0K 0
jseg 0 0K 0
jfreefrag 0 0K 0
jfreeblk 0 0K 0
jnewblk 0 0K 0
jmvref 0 0K 0
jremref 0 0K 0
jaddref 0 0K 0
freedep 0 0K 0
freefrag 0 0K 62
allocindir 0 0K 0
indirdep 0 0K 2057
allocdirect 0 0K 0
ufs_trim 0 0K 0
mactemp 0 0K 0
audit_trigger 0 0K 0
audit_pipe_presel 0 0K 0
audit_pipeent 0 0K 0
audit_pipe 0 0K 0
audit_evname 0 0K 0
audit_bsm 0 0K 0
audit_gidset 0 0K 0
audit_text 0 0K 0
audit_path 0 0K 0
audit_data 0 0K 0
audit_cred 0 0K 0
scsi_ch 0 0K 0
scsi_cd 0 0K 0
AHCI driver 0 0K 0
USBdev 0 0K 0
USB 0 0K 0
agp 0 0K 0
nvme_da 0 0K 0
ktls_ocf 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
MLX5E_TLS 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EN 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
MLX5DUMP 0 0K 0
MLX5EEPROM 0 0K 0
MLX5EEPROM 0 0K 0
seq_file 0 0K 0
radix 0 0K 0
idr 0 0K 0
lkpifw 0 0K 0
NLM 0 0K 0
ipsec-spdcache 0 0K 0
ipsec-reg 0 0K 0
ipsec-misc 0 0K 0
ipsecrequest 0 0K 0
ip6opt 0 0K 73
ip6_msource 0 0K 0
ip6_moptions 0 0K 0
in6_mfilter 0 0K 0
frag6 0 0K 0
tcplog 0 0K 0
tcp_hwpace 0 0K 0
acpipwr 0 0K 0
acpi_perf 0 0K 0
LRO 0 0K 0
newreno data 0 0K 0
ip_moptions 0 0K 4
in_mfilter 0 0K 8
ipid 0 0K 0
80211scan 0 0K 0
80211ratectl 0 0K 0
80211power 0 0K 0
80211nodeie 0 0K 0
80211node 0 0K 0
80211mesh_gt 0 0K 0
80211mesh_rt 0 0K 0
80211perr 0 0K 0
80211prep 0 0K 0
80211preq 0 0K 0
80211dfs 0 0K 0
80211crypto 0 0K 0
80211vap 0 0K 0
iflib 0 0K 0
vlan 0 0K 0
gif 0 0K 0
ifdescr 0 0K 0
zlib 0 0K 0
fadvise 0 0K 0
VN POLL 0 0K 0
twsbuf 0 0K 0
statfs 0 0K 6998
namei_tracker 0 0K 2
export_host 0 0K 0
cl_savebuf 0 0K 104
twe_commands 0 0K 0
twa_commands 0 0K 0
tcp_log_dev 0 0K 302
midi buffers 0 0K 0
mixer 0 0K 0
ac97 0 0K 0
hdacc 0 0K 0
hdac 0 0K 0
hdaa 0 0K 0
acpicmbat 0 0K 0
SIIS driver 0 0K 0
CAM CCB 0 0K 20388
PUC 0 0K 0
ppbusdev 0 0K 0
agtiapi_MemAlloc malloc 0 0K 0
biobuf 0 0K 0
aios 0 0K 20
lio 0 0K 12
acl 0 0K 0
osti_cacheable 0 0K 0
mbuf_tag 0 0K 171
tempbuff 0 0K 0
tempbuff 0 0K 0
ag_tgt_map_t malloc 0 0K 0
ag_slr_map_t malloc 0 0K 0
lDevFlags * malloc 0 0K 0
tiDeviceHandle_t * malloc 0 0K 0
ag_portal_data_t malloc 0 0K 0
ag_device_t malloc 0 0K 0
STLock malloc 0 0K 0
CCB List 0 0K 0
sr_iov 0 0K 0
OCS 0 0K 0
OCS 0 0K 0
nvme 0 0K 0
nvd 0 0K 0
netmap 0 0K 0
mwldev 0 0K 0
MVS driver 0 0K 0
CAM ccb queue 0 0K 0
mrsasbuf 0 0K 0
mpt_user 0 0K 0
mps_user 0 0K 0
accf 0 0K 0
pts 0 0K 0
ioctlops 0 0K 1048
eventfd 0 0K 2
Witness 0 0K 0
stack 0 0K 0
MPSSAS 0 0K 0
mps 0 0K 0
mpr_user 0 0K 0
MPRSAS 0 0K 0
mpr 0 0K 0
mfibuf 0 0K 0
sbuf 0 0K 288
md_sectors 0 0K 0
firmware 0 0K 0
compressor 0 0K 0
md_disk 0 0K 0
SWAP 0 0K 0
malodev 0 0K 0
LED 0 0K 0
sysctltmp 0 0K 977
sysctl 0 0K 3
ekcd 0 0K 0
dumper 0 0K 0
sendfile 0 0K 6
rctl 0 0K 0
ix_sriov 0 0K 0
aacraidcam 0 0K 0
aacraid_buf 0 0K 0
ix 0 0K 0
ipsbuf 0 0K 0
cache 0 0K 0
iirbuf 0 0K 0
prison_racct 0 0K 0
Fail Points 0 0K 0
sigio 0 0K 1
pwd 0 0K 0
tty console 0 0K 0
aaccam 0 0K 0
aacbuf 0 0K 0
zstd 0 0K 0
XZ_DEC 0 0K 0
nvlist 0 0K 0
SCSI ENC 0 0K 0
SCSI sa 0 0K 0
scsi_pass 0 0K 0
isofs_node 0 0K 0
isofs_mount 0 0K 0
tr_raid5_data 0 0K 0
tr_raid1e_data 0 0K 0
tr_raid1_data 0 0K 0
tr_raid0_data 0 0K 0
tr_concat_data 0 0K 0
md_sii_data 0 0K 0
md_promise_data 0 0K 0
md_nvidia_data 0 0K 0
md_jmicron_data 0 0K 0
md_intel_data 0 0K 0
md_ddf_data 0 0K 0
raid_data 0 0K 72
geom_flashmap 0 0K 0
tmpfs dir 0 0K 0
tmpfs name 0 0K 0
tmpfs mount 0 0K 0
NFS FHA 0 0K 0
newnfsmnt 0 0K 0
newnfsclient_req 0 0K 0
NFSCL layrecall 0 0K 0
NFSCL session 0 0K 0
NFSCL sockreq 0 0K 0
NFSCL devinfo 0 0K 0
NFSCL flayout 0 0K 0
NFSCL layout 0 0K 0
NFSD rollback 0 0K 0
NFSCL diroff 0 0K 0
db> show uma
Zone Size Used Free Requests Sleeps Bucket Total Mem XFree
mbuf_jumbo_page 4096 8322 987 1058742 0 254 38129664 0
tcp_log 416 6111 13905 392162 0 254 8326656 0
mbuf 256 9534 441 2924991 0 254 2553600 0
pbuf 2624 0 957 0 0 2 2511168 0
RADIX NODE 144 15291 1112 252326 0 62 2362032 0
malloc-16384 16384 109 5 6821 0 1 1867776 0
BUF TRIE 144 359 11401 14600 0 62 1693440 0
malloc-384 384 4159 21 4450 0 30 1605120 0
malloc-128 128 12422 40 19634 0 126 1595136 0
mbuf_cluster 2048 690 2 691 0 254 1417216 0
malloc-4096 4096 326 1 485 0 2 1339392 0
UMA Slabs 0 112 11015 34 11015 0 126 1237488 0
vmem btag 56 20475 92 20475 0 254 1151752 0
VM OBJECT 264 2742 63 118863 0 30 740520 0
FFS inode 1160 614 23 7564 0 8 738920 0
MAP ENTRY 96 7308 294 463208 0 126 729792 0
malloc-4096 4096 170 5 7946 0 2 716800 0
ertt_txseginfo 40 7233 8018 863491 0 254 610040 0
tcp_bbr_map 128 1978 2765 330606 0 126 607104 0
malloc-2048 2048 235 59 30160 0 8 602112 0
256 Bucket 2048 230 54 20439 0 8 581632 0
sctp_asoc 2288 109 126 3369 0 254 537680 0
THREAD 1808 267 19 12342 0 8 517088 0
sctp_ep 1280 260 109 8898 0 254 472320 0
malloc-65536 65536 4 2 450 0 1 393216 0
VMSPACE 2544 141 9 7899 0 4 381600 0
lkpimm 160 1 2324 1 0 62 372000 0
lkpicurr 160 2 2323 2 0 62 372000 0
socket 944 303 89 15060 0 254 370048 0
VNODE 448 652 86 7604 0 30 330624 0
malloc-384 384 628 182 20384 0 30 311040 0
sctp_raddr 736 269 83 3954 0 254 259072 0
malloc-64 64 3949 83 4133 0 254 258048 0
malloc-256 256 54 921 15752 0 62 249600 0
PROC 1336 169 17 7931 0 8 248496 0
malloc-16 16 14215 535 20866 0 254 236000 0
DEVCTL 1024 0 220 153 0 0 225280 0
malloc-256 256 665 160 23394 0 62 211200 0
filedesc0 1072 168 21 7895 0 8 202608 0
malloc-65536 65536 0 3 107 0 1 196608 0
malloc-65536 65536 3 0 3 0 1 196608 0
malloc-65536 65536 2 1 10 0 1 196608 0
malloc-32768 32768 0 6 1853 0 1 196608 0
UMA Zones 768 242 2 242 0 16 187392 0
malloc-32 32 5654 142 12569 0 254 185472 0
malloc-128 128 1302 93 40728 0 126 178560 0
mbuf_packet 256 149 541 30253 0 254 176640 0
FFS2 dinode 256 614 16 7564 0 62 161280 0
malloc-1024 1024 111 41 3488 0 16 155648 0
S VFS Cache 104 1072 332 8359 0 126 146016 0
malloc-65536 65536 0 2 20 0 1 131072 0
malloc-65536 65536 0 2 136 0 1 131072 0
128 Bucket 1024 75 52 4013 0 16 130048 0
malloc-1024 1024 119 5 491 0 16 126976 0
malloc-256 256 186 309 30810 0 62 126720 0
clpbuf 2624 0 48 1443 0 16 125952 0
ksiginfo 112 169 875 4705 0 126 116928 0
malloc-8192 8192 12 2 14 0 1 114688 0
malloc-128 128 451 324 11928 0 126 99200 0
malloc-32768 32768 1 2 131 0 1 98304 0
malloc-16384 16384 6 0 21 0 1 98304 0
malloc-4096 4096 22 1 28 0 2 94208 0
malloc-256 256 1 359 13586 0 62 92160 0
UMA Kegs 384 227 6 227 0 30 89472 0
g_bio 408 0 210 62613 0 30 85680 0
tcpcb 1080 33 44 2218 0 254 83160 0
sctp_chunk 152 216 330 1951 0 254 82992 0
malloc-64 64 1055 205 117602 0 254 80640 0
64 Bucket 512 98 54 19691 0 30 77824 0
malloc-64 64 1006 128 20552 0 254 72576 0
malloc-4096 4096 15 2 29 0 2 69632 0
malloc-32768 32768 0 2 8 0 1 65536 0
malloc-16384 16384 2 2 162 0 1 65536 0
malloc-2048 2048 17 15 776 0 8 65536 0
udplite_inpcb 496 37 91 1771 0 254 63488 0
Files 80 609 141 33573 0 126 60000 0
malloc-8192 8192 5 2 106 0 1 57344 0
malloc-4096 4096 11 3 546 0 2 57344 0
32 Bucket 256 65 130 28536 0 62 49920 0
tcp_inpcb 496 35 61 2218 0 254 47616 0
pcpu-8 8 4771 861 8701 0 254 45056 0
DIRHASH 1024 34 6 34 0 16 40960 0
malloc-8192 8192 2 3 31 0 1 40960 0
malloc-8192 8192 3 2 14 0 1 40960 0
malloc-1024 1024 3 37 511 0 16 40960 0
TURNSTILE 136 287 7 287 0 62 39984 0
NAMEI 1024 0 36 47391 0 16 36864 0
malloc-512 512 47 25 896 0 30 36864 0
malloc-384 384 45 45 433 0 30 34560 0
pipe 744 28 17 646 0 16 33480 0
malloc-32768 32768 1 0 1 0 1 32768 0
malloc-32768 32768 1 0 1 0 1 32768 0
pcpu-64 64 487 25 487 0 254 32768 0
malloc-128 128 20 228 277 0 126 31744 0
malloc-256 256 72 48 2004 0 62 30720 0
malloc-256 256 90 30 755 0 62 30720 0
tcp_bbr_pcb 832 3 33 853 0 16 29952 0
tcp_rack_pcb 832 2 34 692 0 16 29952 0
malloc-64 64 245 196 26512 0 254 28224 0
SLEEPQUEUE 88 287 33 287 0 126 28160 0
KNOTE 160 28 147 121830 0 62 28000 0
ttyinq 160 135 40 300 0 62 28000 0
malloc-2048 2048 2 10 49 0 8 24576 0
malloc-1024 1024 13 11 1491 0 16 24576 0
malloc-1024 1024 16 8 70 0 16 24576 0
PWD 32 113 643 6856 0 254 24192 0
malloc-64 64 0 378 601 0 254 24192 0
malloc-32 32 377 379 13022 0 254 24192 0
8 Bucket 80 53 247 3490 0 126 24000 0
malloc-128 128 124 62 7224 0 126 23808 0
sctp_readq 152 116 40 406 0 254 23712 0
ttyoutq 256 72 18 160 0 62 23040 0
malloc-384 384 52 8 52 0 30 23040 0
malloc-4096 4096 2 3 499 0 2 20480 0
malloc-2048 2048 3 7 111 0 8 20480 0
malloc-2048 2048 7 3 22 0 8 20480 0
malloc-512 512 10 30 562 0 30 20480 0
malloc-128 128 77 78 1181 0 126 19840 0
Mountpoints 2752 2 5 4 0 4 19264 0
malloc-384 384 31 19 39 0 30 19200 0
malloc-8192 8192 2 0 2 0 1 16384 0
malloc-4096 4096 0 4 6998 0 2 16384 0
malloc-2048 2048 1 7 139 0 8 16384 0
sctp_laddr 48 100 236 2416 0 254 16128 0
malloc-32 32 267 237 6891 0 254 16128 0
malloc-32 32 58 446 474 0 254 16128 0
16 Bucket 144 63

---
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unread,
Nov 22, 2021, 4:48:19 AM11/22/21
to syzkaller-f...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
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