Warning: Permanently added '10.128.0.230' (ECDSA) to the list of known hosts.
2021/09/27 15:08:38 fuzzer started
2021/09/27 15:08:38 dialing manager at 10.128.0.248:54477
2021/09/27 15:08:45 syscalls: 828
2021/09/27 15:08:45 code coverage: enabled
2021/09/27 15:08:45 comparison tracing: enabled
2021/09/27 15:08:45 extra coverage: support is not implemented in syzkaller
2021/09/27 15:08:45 setuid sandbox: support is not implemented in syzkaller
2021/09/27 15:08:45 namespace sandbox: support is not implemented in syzkaller
2021/09/27 15:08:45 Android sandbox: support is not implemented in syzkaller
2021/09/27 15:08:45 fault injection: support is not implemented in syzkaller
2021/09/27 15:08:45 leak checking: support is not implemented in syzkaller
2021/09/27 15:08:45 net packet injection: enabled
2021/09/27 15:08:45 net device setup: support is not implemented in syzkaller
2021/09/27 15:08:45 concurrency sanitizer: support is not implemented in syzkaller
2021/09/27 15:08:45 devlink PCI setup: support is not implemented in syzkaller
2021/09/27 15:08:45 USB emulation: support is not implemented in syzkaller
2021/09/27 15:08:45 hci packet injection: support is not implemented in syzkaller
2021/09/27 15:08:45 wifi device emulation: support is not implemented in syzkaller
2021/09/27 15:08:45 802.15.4 emulation: support is not implemented in syzkaller
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2021/09/27 15:09:28 starting 4 fuzzer processes
15:09:28 executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000001340), 0x1, 0x0)
ioctl$DIOCCLRIFFLAG(r0, 0xc028445a, &(0x7f0000001400)={0x10, 0x0})

15:09:28 executing program 1:
r0 = socket$inet6_sctp(0x1c, 0x1, 0x84)
bind(r0, &(0x7f0000000000)=@in6={0x1c, 0x1c, 0x3, 0x0, @empty}, 0x1c)
connect$inet6(r0, &(0x7f0000000080)={0x1c, 0x1c, 0x3, 0x0, @loopback}, 0x1c)
setsockopt$inet6_sctp_SCTP_ADD_STREAMS(r0, 0x84, 0x903, &(0x7f0000000040)={0x0, 0x1ff}, 0x8)

15:09:28 executing program 2:
r0 = socket$inet6_sctp(0x1c, 0x5, 0x84)
sendmsg(r0, &(0x7f0000001640)={&(0x7f0000000000)=@in6={0x1c, 0x1c, 0x3, 0x0, @rand_addr="9ea2e13525c3baeaecc4e6ef355bb0d9"}, 0x1c, &(0x7f0000000280)=[{&(0x7f0000000100)="02", 0x1}], 0x1, &(0x7f0000000380)=ANY=[@ANYBLOB="a80000008400000001000000e0de5bed01d467"], 0xa8}, 0x0)

15:09:28 executing program 3:
sendmsg$inet6_sctp(0xffffffffffffffff, &(0x7f0000000580)={&(0x7f0000000080)=@in={0x10, 0x2, 0x1, @rand_addr=0xffff}, 0x10, 0x0}, 0x0)
r0 = socket$inet_sctp(0x2, 0x5, 0x84)
getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r0, 0x84, 0x105, &(0x7f0000000080)={0x1, [<r1=>0x0]}, &(0x7f0000000440)=0x8)
setsockopt$inet_sctp_SCTP_DEFAULT_PRINFO(r0, 0x84, 0x22, &(0x7f0000000040)={0x0, 0x0, r1}, 0xc)

[fib_algo] inet.0 (bsearch4#25) rebuild_fd_flm: switching algo to radix4_lockless
15:09:28 executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000001340), 0x1, 0x0)
ioctl$DIOCCLRIFFLAG(r0, 0xc028445a, &(0x7f0000001400)={0x10, 0x0})

15:09:29 executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000001340), 0x1, 0x0)
ioctl$DIOCCLRIFFLAG(r0, 0xc028445a, &(0x7f0000001400)={0x10, 0x0})

15:09:29 executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000001340), 0x1, 0x0)
ioctl$DIOCCLRIFFLAG(r0, 0xc028445a, &(0x7f0000001400)={0x10, 0x0})

15:09:29 executing program 3:
sendmsg$inet6_sctp(0xffffffffffffffff, &(0x7f0000000580)={&(0x7f0000000080)=@in={0x10, 0x2, 0x1, @rand_addr=0xffff}, 0x10, 0x0}, 0x0)
r0 = socket$inet_sctp(0x2, 0x5, 0x84)
getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r0, 0x84, 0x105, &(0x7f0000000080)={0x1, [<r1=>0x0]}, &(0x7f0000000440)=0x8)
setsockopt$inet_sctp_SCTP_DEFAULT_PRINFO(r0, 0x84, 0x22, &(0x7f0000000040)={0x0, 0x0, r1}, 0xc)

15:09:29 executing program 3:
sendmsg$inet6_sctp(0xffffffffffffffff, &(0x7f0000000580)={&(0x7f0000000080)=@in={0x10, 0x2, 0x1, @rand_addr=0xffff}, 0x10, 0x0}, 0x0)
r0 = socket$inet_sctp(0x2, 0x5, 0x84)
getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(r0, 0x84, 0x105, &(0x7f0000000080)={0x1, [<r1=>0x0]}, &(0x7f0000000440)=0x8)
setsockopt$inet_sctp_SCTP_DEFAULT_PRINFO(r0, 0x84, 0x22, &(0x7f0000000040)={0x0, 0x0, r1}, 0xc)

15:09:29 executing program 1:
r0 = socket$inet6_sctp(0x1c, 0x1, 0x84)
bind(r0, &(0x7f0000000000)=@in6={0x1c, 0x1c, 0x3, 0x0, @empty}, 0x1c)
connect$inet6(r0, &(0x7f0000000080)={0x1c, 0x1c, 0x3, 0x0, @loopback}, 0x1c)
setsockopt$inet6_sctp_SCTP_ADD_STREAMS(r0, 0x84, 0x903, &(0x7f0000000040)={0x0, 0x1ff}, 0x8)

Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe009ea75c70) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3355
exclusive sleep mutex sctp-inp (inp) r = 0 (0xfffffe009ea5f958) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3322
exclusive rw sctp-info (sctp-info) r = 0 (0xfffffe00081b7370) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3321
exclusive sleep mutex sctp-create (inp_create) r = 0 (0xfffffe009ea5f978) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:3320
stack backtrace:
#0 0xffffffff817fc1c3 at witness_debugger+0x173
#1 0xffffffff817fe633 at witness_warn+0x893
#2 0xffffffff821dc522 at trap_pfault+0x162
#3 0xffffffff821dad17 at trap+0x5e7
#4 0xffffffff82181548 at calltrap+0x8
#5 0xffffffff8496fddc at sctp_med_chunk_output+0x190c
#6 0xffffffff8496b935 at sctp_chunk_output+0x2b25
#7 0xffffffff84999bac at sctp_inpcb_free+0xbcc
#8 0xffffffff849c572b at sctp_close+0x1fb
#9 0xffffffff818799be at soclose+0x3fe
#10 0xffffffff8160a438 at _fdrop+0x58
#11 0xffffffff81611dc6 at closef+0x686
#12 0xffffffff81610e4a at fdescfree_fds+0x1fa
#13 0xffffffff816100c3 at fdescfree+0x903
#14 0xffffffff81637c97 at exit1+0x8b7
#15 0xffffffff816373d8 at sys_sys_exit+0x28
#16 0xffffffff821ddb25 at amd64_syscall+0x425
#17 0xffffffff82181e5b at fast_syscall_common+0xf8


Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0xffffffffffffffff
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff849adc92
stack pointer	        = 0x28:0xfffffe00577cad40
frame pointer	        = 0x28:0xfffffe00
577cad70
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 884 (syz-executor.2)
trap number		= 12