======================================================
WARNING: possible circular locking dependency detected
4.15.0-rc3+ #222 Not tainted
------------------------------------------------------
syz-executor1/1176 is trying to acquire lock:
(cpu_hotplug_lock.rw_sem){++++}, at: [<000000008fac2800>] get_online_cpus include/linux/cpu.h:117 [inline]
(cpu_hotplug_lock.rw_sem){++++}, at: [<000000008fac2800>] lru_add_drain_all+0xe/0x20 mm/swap.c:729
but task is already holding lock:
(&sb->s_type->i_mutex_key#10){++++}, at: [<0000000090a29ebc>] inode_lock include/linux/fs.h:713 [inline]
(&sb->s_type->i_mutex_key#10){++++}, at: [<0000000090a29ebc>] shmem_add_seals+0x197/0x1060 mm/shmem.c:2768
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #6 (&sb->s_type->i_mutex_key#10){++++}:
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
down_write+0x87/0x120 kernel/locking/rwsem.c:70
inode_lock include/linux/fs.h:713 [inline]
generic_file_write_iter+0xdc/0x7a0 mm/filemap.c:3289
call_write_iter include/linux/fs.h:1772 [inline]
do_iter_readv_writev+0x531/0x7f0 fs/read_write.c:653
do_iter_write+0x15a/0x540 fs/read_write.c:932
vfs_iter_write+0x77/0xb0 fs/read_write.c:945
iter_file_splice_write+0x7db/0xf30 fs/splice.c:749
do_splice_from fs/splice.c:851 [inline]
do_splice fs/splice.c:1147 [inline]
SYSC_splice fs/splice.c:1402 [inline]
SyS_splice+0x7d5/0x1630 fs/splice.c:1382
entry_SYSCALL_64_fastpath+0x1f/0x96
-> #5 (&pipe->mutex/1){+.+.}:
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
pipe_lock_nested fs/pipe.c:67 [inline]
pipe_lock+0x56/0x70 fs/pipe.c:75
iter_file_splice_write+0x264/0xf30 fs/splice.c:699
do_splice_from fs/splice.c:851 [inline]
do_splice fs/splice.c:1147 [inline]
SYSC_splice fs/splice.c:1402 [inline]
SyS_splice+0x7d5/0x1630 fs/splice.c:1382
entry_SYSCALL_64_fastpath+0x1f/0x96
-> #4 (sb_writers){.+.+}:
spin_lock include/linux/spinlock.h:315 [inline]
devtmpfsd+0x224/0x4b0 drivers/base/devtmpfs.c:392
kthread+0x37a/0x440 kernel/kthread.c:238
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441
0xffffffffffffffff
getname_kernel+0x54/0x340 fs/namei.c:218
-> #3 ((completion)&req.done){+.+.}:
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
complete_acquire include/linux/completion.h:40 [inline]
__wait_for_common kernel/sched/completion.c:109 [inline]
wait_for_common kernel/sched/completion.c:123 [inline]
wait_for_completion+0xcb/0x7b0 kernel/sched/completion.c:144
devtmpfs_create_node+0x32b/0x4a0 drivers/base/devtmpfs.c:115
device_add+0x120f/0x1640 drivers/base/core.c:1824
device_create_groups_vargs+0x1f3/0x250 drivers/base/core.c:2430
device_create_vargs drivers/base/core.c:2470 [inline]
device_create+0xda/0x110 drivers/base/core.c:2506
msr_device_create+0x26/0x40 arch/x86/kernel/msr.c:188
cpuhp_invoke_callback+0x2ea/0x1d20 kernel/cpu.c:182
cpuhp_thread_fun+0x48e/0x7e0 kernel/cpu.c:571
smpboot_thread_fn+0x450/0x7c0 kernel/smpboot.c:164
kthread+0x37a/0x440 kernel/kthread.c:238
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441
-> #2 (cpuhp_state-up){+.+.}:
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
cpuhp_lock_acquire kernel/cpu.c:85 [inline]
cpuhp_invoke_ap_callback kernel/cpu.c:605 [inline]
cpuhp_issue_call+0x1e5/0x520 kernel/cpu.c:1495
__cpuhp_setup_state_cpuslocked+0x282/0x600 kernel/cpu.c:1642
__cpuhp_setup_state+0xb0/0x140 kernel/cpu.c:1671
cpuhp_setup_state include/linux/cpuhotplug.h:201 [inline]
page_writeback_init+0x4d/0x71 mm/page-writeback.c:2081
pagecache_init+0x48/0x4f mm/filemap.c:977
start_kernel+0x6c1/0x754 init/main.c:695
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378
x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237
-> #1 (cpuhp_state_mutex){+.+.}:
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908
__cpuhp_setup_state_cpuslocked+0x5b/0x600 kernel/cpu.c:1617
__cpuhp_setup_state+0xb0/0x140 kernel/cpu.c:1671
cpuhp_setup_state_nocalls include/linux/cpuhotplug.h:229 [inline]
kvm_guest_init+0x1f3/0x20f arch/x86/kernel/kvm.c:528
setup_arch+0x17e8/0x1a02 arch/x86/kernel/setup.c:1266
start_kernel+0xa5/0x754 init/main.c:530
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378
x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237
-> #0 (cpu_hotplug_lock.rw_sem){++++}:
check_prevs_add kernel/locking/lockdep.c:2031 [inline]
validate_chain kernel/locking/lockdep.c:2473 [inline]
__lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
cpus_read_lock+0x42/0x90 kernel/cpu.c:293
get_online_cpus include/linux/cpu.h:117 [inline]
lru_add_drain_all+0xe/0x20 mm/swap.c:729
shmem_wait_for_pins mm/shmem.c:2672 [inline]
shmem_add_seals+0x3df/0x1060 mm/shmem.c:2780
shmem_fcntl+0xfe/0x130 mm/shmem.c:2815
do_fcntl+0x73e/0x1160 fs/fcntl.c:421
SYSC_fcntl fs/fcntl.c:463 [inline]
SyS_fcntl+0xdc/0x120 fs/fcntl.c:448
entry_SYSCALL_64_fastpath+0x1f/0x96
other info that might help us debug this:
Chain exists of:
cpu_hotplug_lock.rw_sem --> &pipe->mutex/1 --> &sb->s_type->i_mutex_key#10
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&sb->s_type->i_mutex_key#10);
lock(&pipe->mutex/1);
lock(&sb->s_type->i_mutex_key#10);
lock(cpu_hotplug_lock.rw_sem);
*** DEADLOCK ***
1 lock held by syz-executor1/1176:
#0: (&sb->s_type->i_mutex_key#10){++++}, at: [<0000000090a29ebc>] inode_lock include/linux/fs.h:713 [inline]
#0: (&sb->s_type->i_mutex_key#10){++++}, at: [<0000000090a29ebc>] shmem_add_seals+0x197/0x1060 mm/shmem.c:2768
stack backtrace:
CPU: 1 PID: 1176 Comm: syz-executor1 Not tainted 4.15.0-rc3+ #222
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
print_circular_bug+0x42d/0x610 kernel/locking/lockdep.c:1271
check_prev_add+0x666/0x15f0 kernel/locking/lockdep.c:1914
check_prevs_add kernel/locking/lockdep.c:2031 [inline]
validate_chain kernel/locking/lockdep.c:2473 [inline]
__lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500
lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
cpus_read_lock+0x42/0x90 kernel/cpu.c:293
get_online_cpus include/linux/cpu.h:117 [inline]
lru_add_drain_all+0xe/0x20 mm/swap.c:729
shmem_wait_for_pins mm/shmem.c:2672 [inline]
shmem_add_seals+0x3df/0x1060 mm/shmem.c:2780
shmem_fcntl+0xfe/0x130 mm/shmem.c:2815
do_fcntl+0x73e/0x1160 fs/fcntl.c:421
SYSC_fcntl fs/fcntl.c:463 [inline]
SyS_fcntl+0xdc/0x120 fs/fcntl.c:448
entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f89f12abc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 00007f89f12ac700 RCX: 0000000000452a39
RDX: 000000000000000a RSI: 0000000000000409 RDI: 0000000000000015
RBP: 0000000000a6f880 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a6f7ff R14: 00007f89f12ac9c0 R15: 000000000000000f
netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'.
device gre0 entered promiscuous mode
netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'.
audit: type=1400 audit(1513380737.013:2631): avc: denied { setgid } for pid=1274 comm="syz-executor6" capability=6 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
binder: 1306:1307 ioctl 40106410 20926ff0 returned -22
binder: 1306:1307 ioctl ae03 2 returned -22
netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'.
binder: BINDER_SET_CONTEXT_MGR already set
binder: 1306:1318 ioctl 40046207 0 returned -16
xprt_adjust_timeout: rq_timeout = 0!
binder: BINDER_SET_CONTEXT_MGR already set
binder: 1306:1337 ioctl 40046207 0 returned -16
binder: 1306:1337 ioctl 40106410 20926ff0 returned -22
binder: 1306:1318 ioctl ae03 2 returned -22
audit: type=1400 audit(1513380737.301:2632): avc: denied { ipc_lock } for pid=1347 comm="syz-executor5" capability=14 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
xprt_adjust_timeout: rq_timeout = 0!
netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'.
device gre0 entered promiscuous mode
kvm: pic: non byte write
kvm: pic: non byte write
kvm: pic: non byte write
kvm: pic: non byte write
kvm: pic: non byte write
kvm: pic: non byte write
kvm: pic: non byte write
audit: type=1326 audit(1513380737.864:2633): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=1496 comm="syz-executor3" exe="/root/syz-executor3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0xfff00000
audit: type=1400 audit(1513380737.947:2634): avc: denied { sys_chroot } for pid=1516 comm="syz-executor0" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'.
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
binder: 1597:1603 ioctl 40286608 5 returned -22
binder: 1597:1603 ioctl 40046205 3 returned -22
binder: 1597:1603 ERROR: BC_REGISTER_LOOPER called without request
binder: 1603 RLIMIT_NICE not set
binder: 1603 RLIMIT_NICE not set
netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
binder: 1597:1617 got reply transaction with bad transaction stack, transaction 356 has target 1597:0
binder: 1597:1617 transaction failed 29201/-71, size 32-8 line 2705
binder: 1597:1617 ioctl 40286608 5 returned -22
binder: 1597:1617 ioctl 40046205 3 returned -22
netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
binder: BINDER_SET_CONTEXT_MGR already set
binder: 1597:1617 ioctl 40046207 0 returned -16
binder: 1597:1603 ERROR: BC_REGISTER_LOOPER called without request
binder: 1603 RLIMIT_NICE not set
binder_alloc: 1597: binder_alloc_buf, no vma
binder: 1597:1617 transaction failed 29189/-3, size 0-0 line 2890
binder: 1597:1603 got reply transaction with no transaction stack
binder: 1597:1603 transaction failed 29201/-71, size 32-8 line 2690
binder: 1597:1617 DecRefs 0 refcount change on invalid ref 1 ret -22
binder: 1597:1617 unknown command 0
binder: 1597:1617 ioctl c0306201 2000efd0 returned -22
binder: undelivered TRANSACTION_ERROR: 29201
binder: release 1597:1603 transaction 356 in, still active
binder: send failed reply for transaction 356 to 1597:1617
binder: undelivered TRANSACTION_ERROR: 29189
netlink: 'syz-executor6': attribute type 10 has an invalid length.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 'syz-executor6': attribute type 10 has an invalid length.
device gre0 entered promiscuous mode
device gre0 entered promiscuous mode
SELinux: unknown mount option
device gre0 entered promiscuous mode
device gre0 entered promiscuous mode
netlink: 'syz-executor4': attribute type 27 has an invalid length.
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
netlink: 'syz-executor4': attribute type 27 has an invalid length.
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
audit: type=1326 audit(1513380740.487:2635): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2142 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380740.487:2636): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2142 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380740.487:2637): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2142 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380740.487:2638): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2142 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=228 compat=0 ip=0x4557da code=0x7ffc0000
audit: type=1326 audit(1513380740.487:2639): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2142 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
rfkill: input handler disabled
rfkill: input handler enabled
pit: kvm: requested 4190 ns i8254 timer period limited to 500000 ns
pit: kvm: requested 4190 ns i8254 timer period limited to 500000 ns
loop_reread_partitions: partition scan of loop0 (Z Q D '#Kn59ei5E
O3}u8f~
F<) failed (rc=-13)
binder: BINDER_SET_CONTEXT_MGR already set
binder: 2310:2343 ioctl 40046207 0 returned -16
loop_reread_partitions: partition scan of loop0 (Z Q D '#Kn59ei5E
O3}u8f~
F<) failed (rc=-13)
binder: 2310:2315 ioctl c0306201 20008fd0 returned -14
device gre0 entered promiscuous mode
device gre0 entered promiscuous mode
device syz1 entered promiscuous mode
nla_parse: 12 callbacks suppressed
netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'.
kvm: pic: single mode not supported
kvm: pic: level sensitive irq not supported
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=2476 comm=syz-executor5
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
kauditd_printk_skb: 330 callbacks suppressed
audit: type=1326 audit(1513380742.342:2970): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2971): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=283 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2972): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2973): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=32 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2974): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2975): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2976): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2977): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=2 compat=0 ip=0x40cd71 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2978): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0x7ffc0000
audit: type=1326 audit(1513380742.349:2979): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=2562 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=298 compat=0 ip=0x452a39 code=0x7ffc0000
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 PID: 2747 Comm: syz-executor0 Not tainted 4.15.0-rc3+ #222
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
fail_dump lib/fault-inject.c:51 [inline]
should_fail+0x8c0/0xa40 lib/fault-inject.c:149
should_failslab+0xec/0x120 mm/failslab.c:32
slab_pre_alloc_hook mm/slab.h:421 [inline]
slab_alloc_node mm/slab.c:3289 [inline]
kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3632
alloc_task_struct_node kernel/fork.c:156 [inline]
dup_task_struct kernel/fork.c:521 [inline]
copy_process.part.36+0x1a6a/0x4ae0 kernel/fork.c:1591
copy_process kernel/fork.c:1566 [inline]
_do_fork+0x1ef/0xff0 kernel/fork.c:2045
SYSC_clone kernel/fork.c:2155 [inline]
SyS_clone+0x37/0x50 kernel/fork.c:2149
do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x452a39
RSP: 002b:00007f17cd1ccc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 00000000209c4ffc RSI: 0000000020e69000 RDI: 0000000030000100
RBP: 0000000000000047 R08: 0000000020a46000 R09: 0000000000000000
R10: 00000000201cc000 R11: 0000000000000212 R12: 00000000006ee748
R13: 0000000000000014 R14: 00007f17cd1cd6d4 R15: ffffffffffffffff
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 2767 Comm: syz-executor0 Not tainted 4.15.0-rc3+ #222
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
fail_dump lib/fault-inject.c:51 [inline]
should_fail+0x8c0/0xa40 lib/fault-inject.c:149
should_failslab+0xec/0x120 mm/failslab.c:32
slab_pre_alloc_hook mm/slab.h:421 [inline]
slab_alloc mm/slab.c:3368 [inline]
kmem_cache_alloc+0x47/0x760 mm/slab.c:3542
prepare_creds+0x78/0x360 kernel/cred.c:252
copy_creds+0x7b/0x3a0 kernel/cred.c:344
copy_process.part.36+0xb28/0x4ae0 kernel/fork.c:1624
copy_process kernel/fork.c:1566 [inline]
_do_fork+0x1ef/0xff0 kernel/fork.c:2045
SYSC_clone kernel/fork.c:2155 [inline]
SyS_clone+0x37/0x50 kernel/fork.c:2149
do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x452a39
RSP: 002b:00007f17cd1ccc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 00000000209c4ffc RSI: 0000000020e69000 RDI: 0000000030000100
RBP: 0000000000000047 R08: 0000000020a46000 R09: 0000000000000000
R10: 00000000201cc000 R11: 0000000000000212 R12: 00000000006ee748
R13: 0000000000000014 R14: 00007f17cd1cd6d4 R15: ffffffffffffffff
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 2809 Comm: syz-executor0 Not tainted 4.15.0-rc3+ #222
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
fail_dump lib/fault-inject.c:51 [inline]
should_fail+0x8c0/0xa40 lib/fault-inject.c:149
should_failslab+0xec/0x120 mm/failslab.c:32
slab_pre_alloc_hook mm/slab.h:421 [inline]
slab_alloc mm/slab.c:3368 [inline]
kmem_cache_alloc+0x47/0x760 mm/slab.c:3542
prepare_creds+0x78/0x360 kernel/cred.c:252
copy_creds+0x7b/0x3a0 kernel/cred.c:344
copy_process.part.36+0xb28/0x4ae0 kernel/fork.c:1624
copy_process kernel/fork.c:1566 [inline]
_do_fork+0x1ef/0xff0 kernel/fork.c:2045
SYSC_clone kernel/fork.c:2155 [inline]
SyS_clone+0x37/0x50 kernel/fork.c:2149
do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x452a39
RSP: 002b:00007f17cd1ccc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 00000000209c4ffc RSI: 0000000020e69000 RDI: 0000000030000100
RBP: 0000000000000047 R08: 0000000020a46000 R09: 0000000000000000
R10: 00000000201cc000 R11: 0000000000000212 R12: 00000000006ee748
R13: 0000000000000014 R14: 00007f17cd1cd6d4 R15: ffffffffffffffff
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 2816 Comm: syz-executor0 Not tainted 4.15.0-rc3+ #222
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
fail_dump lib/fault-inject.c:51 [inline]
should_fail+0x8c0/0xa40 lib/fault-inject.c:149
should_failslab+0xec/0x120 mm/failslab.c:32
slab_pre_alloc_hook mm/slab.h:421 [inline]
slab_alloc mm/slab.c:3368 [inline]
__do_kmalloc mm/slab.c:3706 [inline]
__kmalloc_track_caller+0x5f/0x760 mm/slab.c:3723
kmemdup+0x24/0x50 mm/util.c:118
kmemdup include/linux/string.h:417 [inline]
selinux_cred_prepare+0x43/0xa0 security/selinux/hooks.c:3828
security_prepare_creds+0x7d/0xb0 security/security.c:1000
prepare_creds+0x2b1/0x360 kernel/cred.c:278
copy_creds+0x7b/0x3a0 kernel/cred.c:344
copy_process.part.36+0xb28/0x4ae0 kernel/fork.c:1624
copy_process kernel/fork.c:1566 [inline]
_do_fork+0x1ef/0xff0 kernel/fork.c:2045
SYSC_clone kernel/fork.c:2155 [inline]
SyS_clone+0x37/0x50 kernel/fork.c:2149
do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x452a39
RSP: 002b:00007f17cd1ccc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 00000000209c4ffc RSI: 0000000020e69000 RDI: 0000000030000100
RBP: 0000000000000047 R08: 0000000020a46000 R09: 0000000000000000
R10: 00000000201cc000 R11: 0000000000000212 R12: 00000000006ee748
R13: 0000000000000014 R14: 00007f17cd1cd6d4 R15: ffffffffffffffff