Starting background file system checks in 60 seconds.

Tue Sep 28 08:18:54 UTC 2021

FreeBSD/amd64 (ci-freebsd-i386-0.c.syzkaller.internal) (ttyu0)

Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts.
2021/09/28 08:19:10 fuzzer started
2021/09/28 08:19:10 dialing manager at 10.128.0.248:58252
2021/09/28 08:19:10 syscalls: 828
2021/09/28 08:19:10 code coverage: enabled
2021/09/28 08:19:10 comparison tracing: enabled
2021/09/28 08:19:10 extra coverage: support is not implemented in syzkaller
2021/09/28 08:19:10 setuid sandbox: support is not implemented in syzkaller
2021/09/28 08:19:10 namespace sandbox: support is not implemented in syzkaller
2021/09/28 08:19:10 Android sandbox: support is not implemented in syzkaller
2021/09/28 08:19:10 fault injection: support is not implemented in syzkaller
2021/09/28 08:19:10 leak checking: support is not implemented in syzkaller
2021/09/28 08:19:10 net packet injection: enabled
2021/09/28 08:19:10 net device setup: support is not implemented in syzkaller
2021/09/28 08:19:10 concurrency sanitizer: support is not implemented in syzkaller
2021/09/28 08:19:10 devlink PCI setup: support is not implemented in syzkaller
2021/09/28 08:19:10 USB emulation: support is not implemented in syzkaller
2021/09/28 08:19:10 hci packet injection: support is not implemented in syzkaller
2021/09/28 08:19:10 wifi device emulation: support is not implemented in syzkaller
2021/09/28 08:19:10 802.15.4 emulation: support is not implemented in syzkaller
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login: Expensive timeout(9) function: 0xffffffff81f78aa0(0xffffffff841bd680) 0.002808577 s
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Expensive timeout(9) function: 0xffffffff81f78aa0(0xffffffff841bd680) 0.012591792 s
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Expensive timeout(9) function: 0xffffffff816c6980(0xfffffe009e44ca70) 0.022542952 s
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2021/09/28 08:19:37 starting 4 fuzzer processes
08:19:37 executing program 0:
r0 = socket$inet6_sctp(0x1c, 0x5, 0x84)
setsockopt$inet6_sctp_SCTP_EVENTS(r0, 0x84, 0xc, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6}, 0xb)
getsockopt$inet6_sctp_SCTP_EVENTS(r0, 0x84, 0xc, &(0x7f0000000040), &(0x7f0000000080)=0xb)

08:19:37 executing program 1:
r0 = socket(0x1c, 0x10000001, 0x84)
sendmsg(r0, &(0x7f0000001340)={&(0x7f0000000080)=@in6={0x1c, 0x1c, 0x2, 0x0, @rand_addr="9808ebbaf48fdf43bf9f45195ac45161"}, 0x1c, &(0x7f0000001240)=[{&(0x7f00000000c0)="88", 0x1}], 0x1, &(0x7f00000012c0)=[{0xc}], 0xc}, 0x0)

08:19:37 executing program 2:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000004c0), 0x1, 0x0)
ioctl$DIOCADDADDR(r0, 0xc4704434, &(0x7f0000000500)="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")

08:19:37 executing program 3:
r0 = openat$ptmx(0xffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = fcntl$dupfd(r0, 0x0, r0)
ioctl$DIOCSETTIMEOUT(r1, 0xc008441d, &(0x7f0000000000)={0xf, 0x9})

[fib_algo] inet.0 (bsearch4#27) rebuild_fd_flm: switching algo to radix4_lockless
08:19:38 executing program 0:
r0 = socket$inet6_sctp(0x1c, 0x5, 0x84)
setsockopt$inet6_sctp_SCTP_EVENTS(r0, 0x84, 0xc, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6}, 0xb)
getsockopt$inet6_sctp_SCTP_EVENTS(r0, 0x84, 0xc, &(0x7f0000000040), &(0x7f0000000080)=0xb)

08:19:38 executing program 0:
r0 = socket$inet6_sctp(0x1c, 0x5, 0x84)
setsockopt$inet6_sctp_SCTP_EVENTS(r0, 0x84, 0xc, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6}, 0xb)
getsockopt$inet6_sctp_SCTP_EVENTS(r0, 0x84, 0xc, &(0x7f0000000040), &(0x7f0000000080)=0xb)

Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffffe009ea86c70) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctputil.c:1523
exclusive sleep mutex sctp-inp (inp) r = 0 (0xfffffe009ea79958) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctputil.c:1501
exclusive sleep mutex sctp-it (iterator) r = 0 (0xffffffff84d13560) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctputil.c:1460
shared rw sctp-info (sctp-info) r = 0 (0xfffffe00081ba7f8) locked @ /syzkaller/managers/i386/kernel/sys/netinet/sctputil.c:1459
stack backtrace:
#0 0xffffffff817fc043 at witness_debugger+0x173
#1 0xffffffff817fe4b3 at witness_warn+0x893
#2 0xffffffff821dc522 at trap_pfault+0x162
#3 0xffffffff821dad17 at trap+0x5e7
#4 0xffffffff821813c8 at calltrap+0x8
08:19:38 executing program 3:
r0 = openat$ptmx(0xffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = fcntl$dupfd(r0, 0x0, r0)
ioctl$DIOCSETTIMEOUT(r1, 0xc008441d, &(0x7f0000000000)={0xf, 0x9})

08:19:38 executing program 3:
r0 = openat$ptmx(0xffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = fcntl$dupfd(r0, 0x0, r0)
ioctl$DIOCSETTIMEOUT(r1, 0xc008441d, &(0x7f0000000000)={0xf, 0x9})

08:19:38 executing program 3:
r0 = openat$ptmx(0xffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = fcntl$dupfd(r0, 0x0, r0)
ioctl$DIOCSETTIMEOUT(r1, 0xc008441d, &(0x7f0000000000)={0xf, 0x9})

#5 0xffffffff84c47ddc at sctp_med_chunk_output+0x190c
#6 0xffffffff84c43935 at sctp_chunk_output+0x2b25
#7 0xffffffff84cc67e5 at sctp_iterator_worker+0xbd5
#8 0xffffffff84bf07ee at sctp_iterator_thread+0x5e
#9 0xffffffff81643190 at fork_exit+0xd0
#10 0xffffffff8218243e at fork_trampoline+0xe


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	= 0x20:0xffffffff84c85c92
stack pointer	        = 0x28:0xfffffe0057691540
frame pointer	        = 0x28:0xfffffe0057691570
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 pro
cess		= 17 (sctp_iterator)
trap number		= 12