pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) pktgen: Initialization failed for all threads ====================================================== [ INFO: possible circular locking dependency detected ] 4.9.111-g03c70fe #5 Not tainted ------------------------------------------------------- syz-executor2/509 is trying to acquire lock: attempt to access beyond end of device loop7: rw=536870984, want=438, limit=383 buffer_io_error: 152 callbacks suppressed Buffer I/O error on dev loop7, logical block 437, lost async page write attempt to access beyond end of device loop7: rw=536870984, want=439, limit=383 Buffer I/O error on dev loop7, logical block 438, lost async page write attempt to access beyond end of device loop7: rw=536870984, want=440, limit=383 Buffer I/O error on dev loop7, logical block 439, lost async page write attempt to access beyond end of device loop7: rw=0, want=438, limit=383 attempt to access beyond end of device loop7: rw=0, want=439, limit=383 attempt to access beyond end of device loop7: rw=0, want=438, limit=383 FAT-fs (loop7): error, fat_get_cluster: invalid cluster chain (i_pos 1041) FAT-fs (loop7): Filesystem has been set read-only attempt to access beyond end of device loop7: rw=0, want=438, limit=383 attempt to access beyond end of device loop7: rw=0, want=440, limit=383 attempt to access beyond end of device loop7: rw=0, want=438, limit=383 attempt to access beyond end of device loop7: rw=0, want=439, limit=383 (rtnl_mutex){+.+.+.}, at: [] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 but task is already holding lock: (sk_lock-AF_INET){+.+.+.}, at: [] lock_sock include/net/sock.h:1404 [inline] (sk_lock-AF_INET){+.+.+.}, at: [] do_ip_setsockopt.isra.13+0x269/0x2b10 net/ipv4/ip_sockglue.c:636 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 lock_sock_nested+0xc6/0x120 net/core/sock.c:2511 lock_sock include/net/sock.h:1404 [inline] do_ip_setsockopt.isra.13+0x12a/0x2b10 net/ipv4/ip_sockglue.c:636 ip_setsockopt+0x3a/0xb0 net/ipv4/ip_sockglue.c:1240 udp_setsockopt+0x4a/0x90 net/ipv4/udp.c:2091 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2706 SYSC_setsockopt net/socket.c:1772 [inline] SyS_setsockopt+0x166/0x260 net/socket.c:1751 do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 entry_SYSCALL_64_after_swapgs+0x5d/0xdb check_prev_add kernel/locking/lockdep.c:1828 [inline] check_prevs_add kernel/locking/lockdep.c:1938 [inline] validate_chain kernel/locking/lockdep.c:2265 [inline] __lock_acquire+0x3019/0x4070 kernel/locking/lockdep.c:3345 lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 __mutex_lock_common kernel/locking/mutex.c:521 [inline] mutex_lock_nested+0xc0/0x870 kernel/locking/mutex.c:621 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 mrtsock_destruct+0x3b/0x1e0 net/ipv4/ipmr.c:1231 ip_ra_control+0x2c2/0x420 net/ipv4/ip_sockglue.c:360 do_ip_setsockopt.isra.13+0x15ff/0x2b10 net/ipv4/ip_sockglue.c:1137 ip_setsockopt+0x3a/0xb0 net/ipv4/ip_sockglue.c:1240 raw_setsockopt+0xb7/0xd0 net/ipv4/raw.c:833 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2706 SYSC_setsockopt net/socket.c:1772 [inline] SyS_setsockopt+0x166/0x260 net/socket.c:1751 do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 entry_SYSCALL_64_after_swapgs+0x5d/0xdb other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_INET); lock(rtnl_mutex); lock(sk_lock-AF_INET); lock(rtnl_mutex); *** DEADLOCK *** 1 lock held by syz-executor2/509: #0: (sk_lock-AF_INET){+.+.+.}, at: [] lock_sock include/net/sock.h:1404 [inline] #0: (sk_lock-AF_INET){+.+.+.}, at: [] do_ip_setsockopt.isra.13+0x269/0x2b10 net/ipv4/ip_sockglue.c:636 attempt to access beyond end of device loop3: rw=536870984, want=438, limit=383 Buffer I/O error on dev loop3, logical block 437, lost async page write attempt to access beyond end of device loop3: rw=536870984, want=439, limit=383 Buffer I/O error on dev loop3, logical block 438, lost async page write attempt to access beyond end of device loop3: rw=536870984, want=440, limit=383 Buffer I/O error on dev loop3, logical block 439, lost async page write attempt to access beyond end of device loop3: rw=0, want=438, limit=383 attempt to access beyond end of device loop3: rw=0, want=439, limit=383 stack backtrace: CPU: 1 PID: 509 Comm: syz-executor2 Not tainted 4.9.111-g03c70fe #5 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a5e7f5f8 ffffffff81eb2729 ffffffff8559d0a0 ffffffff855e7800 ffffffff8559d0a0 ffff88019f11d0e8 ffff88019f11c800 ffff8801a5e7f640 ffffffff814263a4 0000000000000001 000000009f11c800 0000000000000001 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] print_circular_bug.cold.51+0x1bd/0x27d kernel/locking/lockdep.c:1202 [] check_prev_add kernel/locking/lockdep.c:1828 [inline] [] check_prevs_add kernel/locking/lockdep.c:1938 [inline] [] validate_chain kernel/locking/lockdep.c:2265 [inline] [] __lock_acquire+0x3019/0x4070 kernel/locking/lockdep.c:3345 [] lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756 [] __mutex_lock_common kernel/locking/mutex.c:521 [inline] [] mutex_lock_nested+0xc0/0x870 kernel/locking/mutex.c:621 [] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 [] mrtsock_destruct+0x3b/0x1e0 net/ipv4/ipmr.c:1231 [] ip_ra_control+0x2c2/0x420 net/ipv4/ip_sockglue.c:360 [] do_ip_setsockopt.isra.13+0x15ff/0x2b10 net/ipv4/ip_sockglue.c:1137 [] ip_setsockopt+0x3a/0xb0 net/ipv4/ip_sockglue.c:1240 [] raw_setsockopt+0xb7/0xd0 net/ipv4/raw.c:833 [] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2706 [] SYSC_setsockopt net/socket.c:1772 [inline] [] SyS_setsockopt+0x166/0x260 net/socket.c:1751 [] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb blk_update_request: 154 callbacks suppressed blk_update_request: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, lost async page write blk_update_request: I/O error, dev loop0, sector 8 Buffer I/O error on dev loop0, logical block 1, lost async page write blk_update_request: I/O error, dev loop0, sector 16 Buffer I/O error on dev loop0, logical block 2, lost async page write blk_update_request: I/O error, dev loop0, sector 24 Buffer I/O error on dev loop0, logical block 3, lost async page write blk_update_request: I/O error, dev loop0, sector 32 blk_update_request: I/O error, dev loop0, sector 40 blk_update_request: I/O error, dev loop0, sector 48 blk_update_request: I/O error, dev loop0, sector 56 blk_update_request: I/O error, dev loop0, sector 64 blk_update_request: I/O error, dev loop0, sector 72 attempt to access beyond end of device loop7: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop3: rw=0, want=438, limit=383 attempt to access beyond end of device loop3: rw=0, want=439, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop7: rw=0, want=438, limit=383 attempt to access beyond end of device loop7: rw=0, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop3: rw=0, want=438, limit=383 attempt to access beyond end of device loop3: rw=0, want=439, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop7: rw=0, want=438, limit=383 attempt to access beyond end of device loop7: rw=0, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop7: rw=0, want=438, limit=383 attempt to access beyond end of device loop7: rw=0, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop7: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop3: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=440, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=440, limit=383 FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop7): bogus number of reserved sectors FAT-fs (loop7): Can't find a valid FAT filesystem attempt to access beyond end of device loop1: rw=536870984, want=438, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=439, limit=383 attempt to access beyond end of device loop1: rw=536870984, want=440, limit=383 FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop7): bogus number of reserved sectors FAT-fs (loop7): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready FAT-fs (loop7): bogus number of reserved sectors FAT-fs (loop7): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop7): bogus number of reserved sectors FAT-fs (loop7): Can't find a valid FAT filesystem FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop7): invalid media value (0x00) FAT-fs (loop7): Can't find a valid FAT filesystem FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop7): invalid media value (0x00) FAT-fs (loop7): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop7): invalid media value (0x00) FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop7): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop1): invalid media value (0x00) FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop1): invalid media value (0x00) FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop1): invalid media value (0x00) FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_1: link becomes ready FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): invalid media value (0x00) FAT-fs (loop3): Can't find a valid FAT filesystem IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bond_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready blk_update_request: 640 callbacks suppressed blk_update_request: I/O error, dev loop0, sector 968 buffer_io_error: 685 callbacks suppressed Buffer I/O error on dev loop0, logical block 121, lost async page write