tc_ctl_action: received NO action attribs tc_ctl_action: received NO action attribs 8021q: adding VLAN 0 to HW filter on device macvlan17 team0: Port device macvlan17 added ====================================================== WARNING: possible circular locking dependency detected 4.14.228-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/14590 is trying to acquire lock: (&sig->cred_guard_mutex){+.+.}, at: [] lock_trace fs/proc/base.c:407 [inline] (&sig->cred_guard_mutex){+.+.}, at: [] proc_pid_stack+0x13f/0x2f0 fs/proc/base.c:457 but task is already holding lock: (&p->lock){+.+.}, at: [] seq_read+0xba/0x1120 fs/seq_file.c:165 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&p->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 seq_read+0xba/0x1120 fs/seq_file.c:165 proc_reg_read+0xee/0x1a0 fs/proc/inode.c:217 do_loop_readv_writev fs/read_write.c:695 [inline] do_loop_readv_writev fs/read_write.c:682 [inline] do_iter_read+0x3eb/0x5b0 fs/read_write.c:919 vfs_readv+0xc8/0x120 fs/read_write.c:981 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x418/0x910 fs/splice.c:416 do_splice_to+0xfb/0x140 fs/splice.c:880 splice_direct_to_actor+0x207/0x730 fs/splice.c:952 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x47f/0xb30 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #2 (sb_writers#3){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x64/0x260 fs/super.c:1342 sb_start_write include/linux/fs.h:1549 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 ovl_create_object+0x75/0x1d0 fs/overlayfs/dir.c:538 lookup_open+0x77a/0x1750 fs/namei.c:3241 do_last fs/namei.c:3334 [inline] path_openat+0xe08/0x2970 fs/namei.c:3569 do_filp_open+0x179/0x3c0 fs/namei.c:3603 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #1 (&ovl_i_mutex_dir_key[depth]){++++}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:729 [inline] do_last fs/namei.c:3333 [inline] path_openat+0x149b/0x2970 fs/namei.c:3569 do_filp_open+0x179/0x3c0 fs/namei.c:3603 do_open_execat+0xd3/0x450 fs/exec.c:849 do_execveat_common+0x711/0x1f30 fs/exec.c:1755 do_execve fs/exec.c:1860 [inline] SYSC_execve fs/exec.c:1941 [inline] SyS_execve+0x3b/0x50 fs/exec.c:1936 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #0 (&sig->cred_guard_mutex){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 lock_trace fs/proc/base.c:407 [inline] proc_pid_stack+0x13f/0x2f0 fs/proc/base.c:457 proc_single_show+0xe7/0x150 fs/proc/base.c:761 seq_read+0x4cf/0x1120 fs/seq_file.c:237 do_loop_readv_writev fs/read_write.c:695 [inline] do_loop_readv_writev fs/read_write.c:682 [inline] do_iter_read+0x3eb/0x5b0 fs/read_write.c:919 vfs_readv+0xc8/0x120 fs/read_write.c:981 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x418/0x910 fs/splice.c:416 do_splice_to+0xfb/0x140 fs/splice.c:880 splice_direct_to_actor+0x207/0x730 fs/splice.c:952 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x47f/0xb30 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb other info that might help us debug this: Chain exists of: &sig->cred_guard_mutex --> sb_writers#3 --> &p->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&p->lock); lock(sb_writers#3); lock(&p->lock); lock(&sig->cred_guard_mutex); *** DEADLOCK *** 2 locks held by syz-executor.0/14590: #0: (sb_writers#3){.+.+}, at: [] file_start_write include/linux/fs.h:2712 [inline] #0: (sb_writers#3){.+.+}, at: [] do_sendfile+0x84f/0xb30 fs/read_write.c:1440 #1: (&p->lock){+.+.}, at: [] seq_read+0xba/0x1120 fs/seq_file.c:165 stack backtrace: CPU: 1 PID: 14590 Comm: syz-executor.0 Not tainted 4.14.228-syzkaller #0 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+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 lock_trace fs/proc/base.c:407 [inline] proc_pid_stack+0x13f/0x2f0 fs/proc/base.c:457 proc_single_show+0xe7/0x150 fs/proc/base.c:761 seq_read+0x4cf/0x1120 fs/seq_file.c:237 do_loop_readv_writev fs/read_write.c:695 [inline] do_loop_readv_writev fs/read_write.c:682 [inline] do_iter_read+0x3eb/0x5b0 fs/read_write.c:919 vfs_readv+0xc8/0x120 fs/read_write.c:981 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x418/0x910 fs/splice.c:416 do_splice_to+0xfb/0x140 fs/splice.c:880 splice_direct_to_actor+0x207/0x730 fs/splice.c:952 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x47f/0xb30 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007fc1acc75188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000f6c1 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffe54bd0f5f R14: 00007fc1acc75300 R15: 0000000000022000 8021q: adding VLAN 0 to HW filter on device macvlan18 team0: Port device macvlan18 added IPVS: ftp: loaded support on port[0] = 21 can: request_module (can-proto-5) failed. print_req_error: I/O error, dev loop1, sector 0 can: request_module (can-proto-5) failed. print_req_error: I/O error, dev loop1, sector 0 Bluetooth: hci2 command 0x0419 tx timeout UDF-fs: bad mount option "" or missing value Quota error (device loop1): v2_read_file_info: Free block number too big (0 >= 0). EXT4-fs warning (device loop1): ext4_enable_quotas:5758: Failed to enable quota tracking (type=-1, err=-117). Please run e2fsck to fix. RDS: rds_bind could not find a transport for 100.1.1.0, load rds_tcp or rds_rdma? audit: type=1800 audit(1617569688.182:1092): pid=14775 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="file0" dev="sda1" ino=14912 res=0 EXT4-fs (loop1): mount failed audit: type=1804 audit(1617569688.182:1093): pid=14775 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="file0" dev="sda1" ino=14912 res=1 RDS: rds_bind could not find a transport for 100.1.1.0, load rds_tcp or rds_rdma? Quota error (device loop1): v2_read_file_info: Free block number too big (0 >= 0). audit: type=1804 audit(1617569688.182:1094): pid=14775 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="file0" dev="sda1" ino=14912 res=1 EXT4-fs warning (device loop1): ext4_enable_quotas:5758: Failed to enable quota tracking (type=-1, err=-117). Please run e2fsck to fix. EXT4-fs (loop1): mount failed audit: type=1804 audit(1617569688.212:1095): pid=14775 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="file0" dev="sda1" ino=14912 res=1 print_req_error: I/O error, dev loop3, sector 0 audit: type=1804 audit(1617569688.922:1096): pid=14836 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="file0" dev="sda1" ino=14912 res=1 audit: type=1804 audit(1617569688.952:1097): pid=14775 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="file0" dev="sda1" ino=14912 res=1 audit: type=1804 audit(1617569688.972:1098): pid=14775 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="file0" dev="sda1" ino=14912 res=1 squashfs: SQUASHFS error: unable to read xattr id index table IPVS: ftp: loaded support on port[0] = 21 squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop3 F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop1): invalid crc value F2FS-fs (loop1): Mismatch valid blocks 2 vs. 0 F2FS-fs (loop1): Failed to initialize F2FS segment manager F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop1): invalid crc value F2FS-fs (loop1): Mismatch valid blocks 2 vs. 0 F2FS-fs (loop1): Failed to initialize F2FS segment manager IPVS: ftp: loaded support on port[0] = 21 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. IPVS: ftp: loaded support on port[0] = 21 ip6_tables: ip6tables: counters copy to user failed while replacing table EXT4-fs warning (device sda1): ext4_resize_begin:72: There are errors in the filesystem, so online resizing is not allowed ip6_tables: ip6tables: counters copy to user failed while replacing table EXT4-fs warning (device sda1): ext4_resize_begin:72: There are errors in the filesystem, so online resizing is not allowed ip6_tables: ip6tables: counters copy to user failed while replacing table EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue ip6_tables: ip6tables: counters copy to user failed while replacing table 8021q: adding VLAN 0 to HW filter on device macvlan18 device macvlan18 entered promiscuous mode team0: Port device macvlan18 added 8021q: adding VLAN 0 to HW filter on device macvlan19 device macvlan19 entered promiscuous mode team0: Port device macvlan19 added netlink: 40 bytes leftover after parsing attributes in process `syz-executor.4'. FAT-fs (loop1): Unrecognized mount option "shower" or missing value netlink: 40 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 44 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 44 bytes leftover after parsing attributes in process `syz-executor.4'. tc_ctl_action: received NO action attribs tc_ctl_action: received NO action attribs ip6_tables: ip6tables: counters copy to user failed while replacing table ip6_tables: ip6tables: counters copy to user failed while replacing table IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready tc_ctl_action: received NO action attribs netlink: 2038 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. cannot load conntrack support for proto=10 cannot load conntrack support for proto=10 NILFS (loop1): couldn't find nilfs on the device NILFS (loop1): couldn't find nilfs on the device 8021q: adding VLAN 0 to HW filter on device batadv0 ubi0: attaching mtd0 ubi0: scanning is finished xt_TCPMSS: Only works on TCP SYN packets F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock NFQUEUE: number of queues (778) out of range (got 66312) FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) NFQUEUE: number of queues (778) out of range (got 66312) CPU: 0 PID: 15366 Comm: syz-executor.2 Not tainted 4.14.228-syzkaller #0 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+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x263/0x410 mm/slab.c:3640 __alloc_skb+0x5c/0x510 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:980 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1159 [inline] netlink_sendmsg+0x901/0xb80 net/netlink/af_netlink.c:1853 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007f71ec76d188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000020002a00 RDI: 0000000000000003 RBP: 00007f71ec76d1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff63217f0f R14: 00007f71ec76d300 R15: 0000000000022000 F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) xt_TCPMSS: Only works on TCP SYN packets F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock ubi0: attached mtd0 (name "mtdram test device", size 0 MiB) F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) ubi0: PEB size: 4096 bytes (4 KiB), LEB size: 3968 bytes F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock audit: type=1804 audit(1617569695.742:1099): pid=15391 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="bus" dev="sda1" ino=14950 res=1 ubi0: min./max. I/O unit sizes: 1/64, sub-page size 1 ubi0: VID header offset: 64 (aligned 64), data offset: 128 audit: type=1800 audit(1617569695.762:1100): pid=15391 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14950 res=0