XFS (loop5): Invalid superblock magic number
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908
in_atomic(): 1, irqs_disabled(): 0, pid: 8174, name: syz-fuzzer
1 lock held by syz-fuzzer/8174:
#0: 000000001ab42ba8 ((&sp->resync_t)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:168 [inline]
#0: 000000001ab42ba8 ((&sp->resync_t)){+.-.}, at: call_timer_fn+0xda/0x720 kernel/time/timer.c:1316
Preemption disabled at:
[<ffffffff878000f3>] __do_softirq+0xf3/0x921 kernel/softirq.c:269
CPU: 1 PID: 8174 Comm: syz-fuzzer Not tainted 4.19.100-syzkaller #0
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+0x197/0x210 lib/dump_stack.c:118
___might_sleep.cold+0x1bd/0x1f6 kernel/sched/core.c:6192
__might_sleep+0x95/0x190 kernel/sched/core.c:6145
__mutex_lock_common kernel/locking/mutex.c:908 [inline]
__mutex_lock+0xc8/0x1300 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123
resync_tnc+0x1b6/0x320 drivers/net/hamradio/6pack.c:522
call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
expire_timers kernel/time/timer.c:1363 [inline]
__run_timers kernel/time/timer.c:1684 [inline]
__run_timers kernel/time/timer.c:1652 [inline]
run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
__do_softirq+0x25c/0x921 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x180/0x1d0 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
</IRQ>
RIP: 0033:0x6fde79
Code: e2 48 89 94 24 a0 00 00 00 48 8d 05 e1 ed 13 00 48 89 04 24 e8 a8 29 d1 ff 48 8b 44 24 08 48 8b 8c 24 a0 00 00 00 48 8b 51 08 <48> 8b 19 48 8b 49 10 48 89 18 48 89 48 10 8b 0d 43 30 75 01 48 8d
RSP: 002b:000000c445afc3a0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 000000c43da4f060 RBX: 0000000000000018 RCX: 000000c425d069c0
RDX: 00000000016b8e00 RSI: 000000c000000000 RDI: 000000c43da4f060
RBP: 000000c445afc4a8 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000009e7396 R11: 0000000000000004 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000013 R15: 0000000000000100
================================
WARNING: inconsistent lock state
4.19.100-syzkaller #0 Tainted: G W
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
syz-fuzzer/8174 [HC0[0]:SC1[1]:HE1:SE0] takes:
000000009ebd50e7 (&tpk_port.port_write_mutex){+.?.}, at: tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123
{SOFTIRQ-ON-W} state was registered at:
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903
__mutex_lock_common kernel/locking/mutex.c:925 [inline]
__mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123
tnc_init drivers/net/hamradio/6pack.c:536 [inline]
sixpack_open+0x9d3/0xbf5 drivers/net/hamradio/6pack.c:632
tty_ldisc_open.isra.0+0x89/0xd0 drivers/tty/tty_ldisc.c:469
tty_set_ldisc+0x2d7/0x690 drivers/tty/tty_ldisc.c:594
tiocsetd drivers/tty/tty_io.c:2359 [inline]
tty_ioctl+0x65e/0x1510 drivers/tty/tty_io.c:2603
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688
ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
irq event stamp: 9172960
hardirqs last enabled at (9172960): [<ffffffff81006693>] trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (9172959): [<ffffffff810066af>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (9172194): [<ffffffff87800633>] __do_softirq+0x633/0x921 kernel/softirq.c:318
softirqs last disabled at (9172885): [<ffffffff81403860>] invoke_softirq kernel/softirq.c:372 [inline]
softirqs last disabled at (9172885): [<ffffffff81403860>] irq_exit+0x180/0x1d0 kernel/softirq.c:412
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&tpk_port.port_write_mutex);
<Interrupt>
lock(&tpk_port.port_write_mutex);
*** DEADLOCK ***
1 lock held by syz-fuzzer/8174:
#0: 000000001ab42ba8 ((&sp->resync_t)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:168 [inline]
#0: 000000001ab42ba8 ((&sp->resync_t)){+.-.}, at: call_timer_fn+0xda/0x720 kernel/time/timer.c:1316
stack backtrace:
CPU: 1 PID: 8174 Comm: syz-fuzzer Tainted: G W 4.19.100-syzkaller #0
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+0x197/0x210 lib/dump_stack.c:118
print_usage_bug.cold+0x330/0x42a kernel/locking/lockdep.c:2540
valid_state kernel/locking/lockdep.c:2553 [inline]
mark_lock_irq kernel/locking/lockdep.c:2747 [inline]
mark_lock+0xd1b/0x1370 kernel/locking/lockdep.c:3127
mark_irqflags kernel/locking/lockdep.c:3005 [inline]
__lock_acquire+0xc62/0x49c0 kernel/locking/lockdep.c:3368
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903
__mutex_lock_common kernel/locking/mutex.c:925 [inline]
__mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123
resync_tnc+0x1b6/0x320 drivers/net/hamradio/6pack.c:522
call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
expire_timers kernel/time/timer.c:1363 [inline]
__run_timers kernel/time/timer.c:1684 [inline]
__run_timers kernel/time/timer.c:1652 [inline]
run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697
__do_softirq+0x25c/0x921 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x180/0x1d0 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
</IRQ>
RIP: 0033:0x6fde79
Code: e2 48 89 94 24 a0 00 00 00 48 8d 05 e1 ed 13 00 48 89 04 24 e8 a8 29 d1 ff 48 8b 44 24 08 48 8b 8c 24 a0 00 00 00 48 8b 51 08 <48> 8b 19 48 8b 49 10 48 89 18 48 89 48 10 8b 0d 43 30 75 01 48 8d
RSP: 002b:000000c445afc3a0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 000000c43da4f060 RBX: 0000000000000018 RCX: 000000c425d069c0
RDX: 00000000016b8e00 RSI: 000000c000000000 RDI: 000000c43da4f060
RBP: 000000c445afc4a8 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000009e7396 R11: 0000000000000004 R12: 0000000000000000
R13: 0000000000000018 R14: 0000000000000013 R15: 0000000000000100
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
audit: type=1800 audit(1580468669.272:157): pid=15030 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=0 res=0
[U] �`�
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
ISOFS: Unable to identify CD-ROM format.
sp0: Synchronizing with TNC
[U] �
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
FAT-fs (loop0): Unrecognized mount option "check" or missing value
sp0: Synchronizing with TNC
FAT-fs (loop0): Unrecognized mount option "check" or missing value
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check.
[U] �
FAT-fs (loop0): Unrecognized mount option "check" or missing value
A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check.
FAT-fs (loop0): Unrecognized mount option "check" or missing value
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
FAT-fs (loop0): Unrecognized mount option "check" or missing value
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
FAT-fs (loop0): Unrecognized mount option "check" or missing value
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
[U] ���
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
[U] �
sp0: Synchronizing with TNC
[U] �
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
[U] �
FAT-fs (loop0): Unrecognized mount option "check" or missing value
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
FAT-fs (loop0): Unrecognized mount option "check" or missing value
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
[U] �
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
[U] �
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
[U] �
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
[U] �
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
[U] �
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
sp0: Synchronizing with TNC
[U] �
cgroup: fork rejected by pids controller in /syz5
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
9pnet: Could not find request transport: �yޔ�tpport=0x00000000�0