====================================================== WARNING: possible circular locking dependency detected 4.15.0-rc1+ #201 Not tainted ------------------------------------------------------ syz-executor3/6141 is trying to acquire lock: (console_lock){+.+.}, at: [<00000000fa6283bd>] vcs_read+0x129/0xae0 drivers/tty/vt/vc_screen.c:219 but task is already holding lock: (&pipe->mutex/1){+.+.}, at: [<0000000089a3a3e1>] pipe_lock_nested fs/pipe.c:67 [inline] (&pipe->mutex/1){+.+.}, at: [<0000000089a3a3e1>] pipe_lock+0x56/0x70 fs/pipe.c:75 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&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 -> #2 (sb_writers){.+.+}: spin_lock include/linux/spinlock.h:315 [inline] inode_doinit_with_dentry+0x13e/0x14c0 security/selinux/hooks.c:1496 -> #1 ((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 vcs_make_sysfs+0x35/0x60 drivers/tty/vt/vc_screen.c:629 vc_allocate+0x4b7/0x6b0 drivers/tty/vt/vt.c:797 con_install+0x52/0x440 drivers/tty/vt/vt.c:2876 tty_driver_install_tty drivers/tty/tty_io.c:1215 [inline] tty_init_dev+0xf6/0x4a0 drivers/tty/tty_io.c:1315 tty_open_by_driver drivers/tty/tty_io.c:1942 [inline] tty_open+0x608/0xab0 drivers/tty/tty_io.c:1990 chrdev_open+0x257/0x730 fs/char_dev.c:417 do_dentry_open+0x682/0xd70 fs/open.c:752 vfs_open+0x107/0x230 fs/open.c:866 do_last fs/namei.c:3379 [inline] path_openat+0x1157/0x3530 fs/namei.c:3519 do_filp_open+0x25b/0x3b0 fs/namei.c:3554 do_sys_open+0x502/0x6d0 fs/open.c:1059 SYSC_open fs/open.c:1077 [inline] SyS_open+0x2d/0x40 fs/open.c:1072 entry_SYSCALL_64_fastpath+0x1f/0x96 -> #0 (console_lock){+.+.}: 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 console_lock+0x4b/0x80 kernel/printk/printk.c:2047 vcs_read+0x129/0xae0 drivers/tty/vt/vc_screen.c:219 do_loop_readv_writev fs/read_write.c:673 [inline] do_iter_read+0x3db/0x5b0 fs/read_write.c:897 vfs_readv+0x121/0x1c0 fs/read_write.c:959 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x508/0xae0 fs/splice.c:416 do_splice_to+0x110/0x170 fs/splice.c:880 do_splice fs/splice.c:1173 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x11a8/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 other info that might help us debug this: Chain exists of: console_lock --> sb_writers --> &pipe->mutex/1 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&pipe->mutex/1); lock(sb_writers); lock(&pipe->mutex/1); lock(console_lock); *** DEADLOCK *** 1 lock held by syz-executor3/6141: #0: (&pipe->mutex/1){+.+.}, at: [<0000000089a3a3e1>] pipe_lock_nested fs/pipe.c:67 [inline] #0: (&pipe->mutex/1){+.+.}, at: [<0000000089a3a3e1>] pipe_lock+0x56/0x70 fs/pipe.c:75 stack backtrace: CPU: 0 PID: 6141 Comm: syz-executor3 Not tainted 4.15.0-rc1+ #201 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 console_lock+0x4b/0x80 kernel/printk/printk.c:2047 vcs_read+0x129/0xae0 drivers/tty/vt/vc_screen.c:219 do_loop_readv_writev fs/read_write.c:673 [inline] do_iter_read+0x3db/0x5b0 fs/read_write.c:897 vfs_readv+0x121/0x1c0 fs/read_write.c:959 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x508/0xae0 fs/splice.c:416 do_splice_to+0x110/0x170 fs/splice.c:880 do_splice fs/splice.c:1173 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x11a8/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f4fad203c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 00000000004529d9 RDX: 0000000000000019 RSI: 0000000000000000 RDI: 0000000000000013 RBP: 00000000000003e2 R08: 0000000000000058 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f2dd0 R13: 00000000ffffffff R14: 00007f4fad2046d4 R15: 0000000000000000 QAT: Invalid ioctl QAT: Invalid ioctl kauditd_printk_skb: 60 callbacks suppressed audit: type=1326 audit(1512062115.955:140): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062115.983:141): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=190 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062115.983:142): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062115.983:143): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062116.006:144): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=116 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062116.006:145): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062116.006:146): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062116.008:147): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=16 compat=0 ip=0x4529d9 code=0x7ffc0000 netlink: 7 bytes leftover after parsing attributes in process `syz-executor4'. PF_BRIDGE: br_mdb_parse() with unknown ifindex netlink: 7 bytes leftover after parsing attributes in process `syz-executor4'. PF_BRIDGE: br_mdb_parse() with unknown ifindex binder: undelivered TRANSACTION_COMPLETE binder: 6278:6279 BC_FREE_BUFFER u0000020400000000 no match sock: process `syz-executor7' is using obsolete setsockopt SO_BSDCOMPAT binder: BINDER_SET_CONTEXT_MGR already set binder: 6278:6279 ioctl 40046207 0 returned -16 binder_alloc: 6278: binder_alloc_buf, no vma binder: 6278:6291 transaction failed 29189/-3, size 0-0 line 2870 binder: undelivered TRANSACTION_ERROR: 29189 binder: 6278:6291 BC_FREE_BUFFER u0000020400000000 no match binder_alloc: 6278: binder_alloc_buf, no vma binder: 6278:6291 transaction failed 29189/-3, size 0-0 line 2870 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_COMPLETE binder: undelivered transaction 40 binder: undelivered transaction 39 raw_sendmsg: syz-executor1 forgot to set AF_INET. Fix it! audit: type=1326 audit(1512062116.008:148): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062116.008:149): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6234 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 encrypted_key: insufficient parameters specified encrypted_key: insufficient parameters specified netlink: 9 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 9 bytes leftover after parsing attributes in process `syz-executor5'. device lo entered promiscuous mode lo: Invalid MTU -1075701634 requested, hw min 0 lo: Invalid MTU -1075701634 requested, hw min 0 sg_write: data in/out 327644/32 bytes for SCSI command 0x4-- guessing data in; program syz-executor4 not setting count and/or reply_len properly sg_write: data in/out 327644/32 bytes for SCSI command 0x4-- guessing data in; program syz-executor4 not setting count and/or reply_len properly netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=63787 sclass=netlink_route_socket pig=7160 comm=syz-executor6 netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=63787 sclass=netlink_route_socket pig=7169 comm=syz-executor6 netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. kauditd_printk_skb: 250 callbacks suppressed audit: type=1326 audit(1512062121.012:400): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062121.039:401): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=9 compat=0 ip=0x4529d9 code=0x7ffc0000 dccp_v4_rcv: dropped packet with invalid checksum dccp_v4_rcv: dropped packet with invalid checksum audit: type=1326 audit(1512062121.039:402): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062121.039:403): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062121.063:404): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=2 compat=0 ip=0x40cd11 code=0x7ffc0000 audit: type=1326 audit(1512062121.063:405): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062121.063:406): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062121.063:407): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=9 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062121.064:408): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 audit: type=1326 audit(1512062121.064:409): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7181 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x4529d9 code=0x7ffc0000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 7225 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3292 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3635 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1144 [inline] netlink_sendmsg+0xa86/0xe70 net/netlink/af_netlink.c:1836 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7232 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3292 [inline] kmem_cache_alloc_node_trace+0x5a/0x760 mm/slab.c:3654 __do_kmalloc_node mm/slab.c:3674 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3689 __kmalloc_reserve.isra.41+0x41/0xd0 net/core/skbuff.c:137 __alloc_skb+0x13b/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1144 [inline] netlink_sendmsg+0xa86/0xe70 net/netlink/af_netlink.c:1836 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7241 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3292 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3635 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] __tipc_nl_compat_doit net/tipc/netlink_compat.c:284 [inline] tipc_nl_compat_doit+0x11f/0x660 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1124 [inline] tipc_nl_compat_recv+0xd52/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfc0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2405 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1298 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1861 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7261 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3292 [inline] kmem_cache_alloc_node_trace+0x5a/0x760 mm/slab.c:3654 __do_kmalloc_node mm/slab.c:3674 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3689 __kmalloc_reserve.isra.41+0x41/0xd0 net/core/skbuff.c:137 __alloc_skb+0x13b/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] __tipc_nl_compat_doit net/tipc/netlink_compat.c:284 [inline] tipc_nl_compat_doit+0x11f/0x660 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1124 [inline] tipc_nl_compat_recv+0xd52/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfc0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2405 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1298 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1861 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7273 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3371 [inline] __do_kmalloc mm/slab.c:3709 [inline] __kmalloc+0x63/0x760 mm/slab.c:3720 kmalloc include/linux/slab.h:504 [inline] __tipc_nl_compat_doit net/tipc/netlink_compat.c:292 [inline] tipc_nl_compat_doit+0x1b3/0x660 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1124 [inline] tipc_nl_compat_recv+0xd52/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfc0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2405 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1298 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1861 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7278 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3292 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3635 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] __tipc_nl_compat_doit net/tipc/netlink_compat.c:305 [inline] tipc_nl_compat_doit+0x34a/0x660 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1124 [inline] tipc_nl_compat_recv+0xd52/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfc0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2405 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1298 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1861 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7286 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3292 [inline] kmem_cache_alloc_node_trace+0x5a/0x760 mm/slab.c:3654 __do_kmalloc_node mm/slab.c:3674 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3689 __kmalloc_reserve.isra.41+0x41/0xd0 net/core/skbuff.c:137 __alloc_skb+0x13b/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] __tipc_nl_compat_doit net/tipc/netlink_compat.c:305 [inline] tipc_nl_compat_doit+0x34a/0x660 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1124 [inline] tipc_nl_compat_recv+0xd52/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfc0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2405 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1298 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1861 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7293 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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:3292 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3635 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] tipc_tlv_alloc+0x26/0xb0 net/tipc/netlink_compat.c:148 tipc_get_err_tlv+0x27/0x60 net/tipc/netlink_compat.c:162 tipc_nl_compat_recv+0x14c3/0x18f0 net/tipc/netlink_compat.c:1205 genl_family_rcv_msg+0x7b7/0xfc0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2405 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1298 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1861 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 7306 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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_fail_alloc_page mm/page_alloc.c:2937 [inline] prepare_alloc_pages mm/page_alloc.c:4176 [inline] __alloc_pages_nodemask+0x338/0xd80 mm/page_alloc.c:4215 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1413 [inline] cache_grow_begin+0x72/0x3f0 mm/slab.c:2671 cache_alloc_refill mm/slab.c:3038 [inline] ____cache_alloc mm/slab.c:3120 [inline] slab_alloc_node mm/slab.c:3315 [inline] kmem_cache_alloc_node_trace+0x438/0x760 mm/slab.c:3654 __do_kmalloc_node mm/slab.c:3674 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3689 __kmalloc_reserve.isra.41+0x41/0xd0 net/core/skbuff.c:137 __alloc_skb+0x13b/0x780 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] __tipc_nl_compat_doit net/tipc/netlink_compat.c:305 [inline] tipc_nl_compat_doit+0x34a/0x660 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1124 [inline] tipc_nl_compat_recv+0xd52/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfc0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2405 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1298 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1861 sock_sendmsg_nosec net/socket.c:632 [inline] sock_sendmsg+0xca/0x110 net/socket.c:642 sock_write_iter+0x320/0x5e0 net/socket.c:911 call_write_iter include/linux/fs.h:1772 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:482 vfs_write+0x18f/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4529d9 RSP: 002b:00007f062fc96c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f062fc96aa0 RCX: 00000000004529d9 RDX: 0000000000000024 RSI: 00000000207ce000 RDI: 0000000000000013 RBP: 00007f062fc96a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b759b R13: 00007f062fc96bc8 R14: 00000000004b759b R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7315 Comm: syz-executor7 Not tainted 4.15.0-rc1+ #201 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