Warning: Permanently added '10.128.1.74' (ECDSA) to the list of known hosts. 2021/09/29 01:10:37 fuzzer started 2021/09/29 01:10:37 dialing manager at 10.128.0.248:24295 2021/09/29 01:10:38 syscalls: 828 2021/09/29 01:10:38 code coverage: enabled 2021/09/29 01:10:38 comparison tracing: enabled 2021/09/29 01:10:38 extra coverage: support is not implemented in syzkaller 2021/09/29 01:10:38 setuid sandbox: support is not implemented in syzkaller 2021/09/29 01:10:38 namespace sandbox: support is not implemented in syzkaller 2021/09/29 01:10:38 Android sandbox: support is not implemented in syzkaller 2021/09/29 01:10:38 fault injection: support is not implemented in syzkaller 2021/09/29 01:10:38 leak checking: support is not implemented in syzkaller 2021/09/29 01:10:38 net packet injection: enabled 2021/09/29 01:10:38 net device setup: support is not implemented in syzkaller 2021/09/29 01:10:38 concurrency sanitizer: support is not implemented in syzkaller 2021/09/29 01:10:38 devlink PCI setup: support is not implemented in syzkaller 2021/09/29 01:10:38 USB emulation: support is not implemented in syzkaller 2021/09/29 01:10:38 hci packet injection: support is not implemented in syzkaller 2021/09/29 01:10:38 wifi device emulation: support is not implemented in syzkaller 2021/09/29 01:10:38 802.15.4 emulation: support is not implemented in syzkaller 2021/09/29 01:10:38 fetching corpus: 0, signal 0/2000 (executing program) 2021/09/29 01:10:38 fetching corpus: 50, signal 16495/20387 (executing program) 2021/09/29 01:10:38 fetching corpus: 100, signal 24437/30182 (executing program) 2021/09/29 01:10:38 fetching corpus: 150, signal 31383/38956 (executing program) 2021/09/29 01:10:38 fetching corpus: 200, signal 40225/49577 (executing program) 2021/09/29 01:10:38 fetching corpus: 250, signal 46999/58060 (executing program) 2021/09/29 01:10:38 fetching corpus: 300, signal 51995/64764 (executing program) 2021/09/29 01:10:38 fetching corpus: 350, signal 57689/72117 (executing 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fetching corpus: 11981, signal 582020/594127 (executing program) 2021/09/29 01:10:52 fetching corpus: 11981, signal 582020/594127 (executing program) 2021/09/29 01:10:52 starting 4 fuzzer processes 01:10:52 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$DIOCGETSTATUS(r0, 0xc1a04415, &(0x7f0000000500)) 01:10:52 executing program 1: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000004c0), 0x1, 0x0) ioctl$DIOCGETSTATES(r0, 0xc0104419, &(0x7f0000000040)) 01:10:52 executing program 2: r0 = socket$inet6_sctp(0x1c, 0x1, 0x84) setsockopt$inet6_sctp_SCTP_INITMSG(r0, 0x84, 0x3, &(0x7f0000000000)={0xffff}, 0x8) connect$inet6(r0, &(0x7f0000000100)={0x1c, 0x1c, 0x0, 0x0, @remote={0xfe, 0x80, '\x00', 0x0}}, 0x1c) setsockopt$inet6_sctp_SCTP_DEFAULT_SNDINFO(r0, 0x84, 0x1203, &(0x7f0000000300)={0x0, 0x0, 0x3}, 0x10) setsockopt$inet_tcp_int(0xffffffffffffffff, 0x6, 0x0, 0x0, 0x0) 01:10:52 executing program 3: r0 = socket$inet6_sctp(0x1c, 0x1, 0x84) r1 = socket$inet6_sctp(0x1c, 0x1, 0x84) r2 = dup2(r1, r1) r3 = dup2(r0, r2) sendmsg$inet_sctp(r3, &(0x7f0000000240)={&(0x7f0000000300)=@in6={0x1c, 0x1c, 0x2, 0x0, @local={0xfe, 0x80, '\x00', 0x0}}, 0x1c, &(0x7f0000000280)=[{&(0x7f0000000080)="ff", 0x1}], 0x1}, 0x0) setsockopt$inet6_sctp_SCTP_SET_PEER_PRIMARY_ADDR(r3, 0x84, 0x6, &(0x7f0000000340)={@in={{0x10, 0x2, 0x1, @loopback}}}, 0x8c) sendmsg$inet_sctp(r3, &(0x7f0000000580)={0x0, 0x0, 0x0}, 0x20108) [fib_algo] inet.0 (bsearch4#26) rebuild_fd_flm: switching algo to radix4_lockless 01:10:53 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$DIOCGETSTATUS(r0, 0xc1a04415, &(0x7f0000000500)) 01:10:53 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$DIOCGETSTATUS(r0, 0xc1a04415, &(0x7f0000000500)) 01:10:53 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$DIOCGETSTATUS(r0, 0xc1a04415, &(0x7f0000000500)) 01:10:53 executing program 1: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000004c0), 0x1, 0x0) ioctl$DIOCGETSTATES(r0, 0xc0104419, &(0x7f0000000040)) 01:10:53 executing program 1: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000004c0), 0x1, 0x0) ioctl$DIOCGETSTATES(r0, 0xc0104419, &(0x7f0000000040)) 01:10:53 executing program 0: r0 = socket(0x1c, 0x1, 0x0) setsockopt$inet_tcp_TCP_FUNCTION_BLK(r0, 0x6, 0x2000, &(0x7f0000000040)={'bbr\x00'}, 0x24) setsockopt$inet_tcp_int(r0, 0x6, 0x428, &(0x7f00000000c0), 0x4) Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe009eaa6c70) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctp_usrreq.c:5851 stack backtrace: #0 0xffffffff817fc8d3 at witness_debugger+0x173 #1 0xffffffff817fed43 at witness_warn+0x893 #2 0xffffffff821dd522 at trap_pfault+0x162 #3 0xffffffff821dbd17 at trap+0x5e7 #4 0xffffffff82181908 at calltrap+0x8 #5 0xffffffff84962ddc at sctp_med_chunk_output+0x190c #6 0xffffffff8495e935 at sctp_chunk_output+0x2b25 #7 0xffffffff849c80a6 at sctp_setopt+0xdcf6 #8 0xffffffff849ba2bf at sctp_ctloutput+0x3df #9 0xffffffff81882064 at sosetopt+0x234 #10 0xffffffff8188f0ec at kern_setsockopt+0x23c #11 0xffffffff8188ee96 at sys_setsockopt+0x76 #12 0xffffffff82356cbf at ia32_syscall+0x41f #13 0xffffffff82182aaf at int0x80_syscall_common+0x9c Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0xffffffffffffffff fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff849a0c92 stack pointer = 0x0:0xfffffe009bf52e80 frame pointer = 0x0:0xfffffe009bf52eb0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interr upt enabled, resume, IOPL = 0 current process = 834 (syz-executor.3) trap number = 12