SELinux: policydb string SE  does not match my string SE Linux SELinux: policydb string SE  does not match my string SE Linux ====================================================== [ INFO: possible circular locking dependency detected ] 4.4.120-gd63fdf6 #28 Not tainted ------------------------------------------------------- syz-executor5/6230 is trying to acquire lock: (&sb->s_type->i_mutex_key#10){+.+.+.}, at: [] shmem_file_llseek+0xf1/0x240 mm/shmem.c:1816 but task is already holding lock: (ashmem_mutex){+.+.+.}, at: [] ashmem_llseek+0x56/0x1f0 drivers/staging/android/ashmem.c:330 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: [] lock_acquire+0x15e/0x460 kernel/locking/lockdep.c:3592 [] __mutex_lock_common kernel/locking/mutex.c:521 [inline] [] mutex_lock_nested+0xbb/0x850 kernel/locking/mutex.c:621 [] ashmem_mmap+0x53/0x400 drivers/staging/android/ashmem.c:366 [] mmap_region+0x94f/0x1250 mm/mmap.c:1664 [ 49.127394] binder: 6258:6260 ioctl c018620b 200003c0 returned -14 binder: 6258:6260 ioctl c0306201 20007000 returned -14 [] do_mmap+0x4fd/0x9d0 mm/mmap.c:1441 [] do_mmap_pgoff include/linux/mm.h:1915 [inline] [] vm_mmap_pgoff+0x16e/0x1c0 mm/util.c:296 [] SYSC_mmap_pgoff mm/mmap.c:1491 [inline] [] SyS_mmap_pgoff+0x33f/0x560 mm/mmap.c:1449 [] SYSC_mmap arch/x86/kernel/sys_x86_64.c:95 [inline] [] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:86 [] entry_SYSCALL_64_fastpath+0x1c/0x98 binder: 6258:6261 ioctl c018620b 200003c0 returned -14 binder: 6258:6262 ioctl c0306201 20007000 returned -14 [] lock_acquire+0x15e/0x460 kernel/locking/lockdep.c:3592 [] __might_fault+0x14a/0x1d0 mm/memory.c:3810 [] copy_to_user arch/x86/include/asm/uaccess.h:760 [inline] [] filldir+0x162/0x2d0 fs/readdir.c:180 [] dir_emit_dot include/linux/fs.h:3070 [inline] [] dir_emit_dots include/linux/fs.h:3081 [inline] [] dcache_readdir+0x11e/0x7b0 fs/libfs.c:150 [] iterate_dir+0x1c8/0x420 fs/readdir.c:42 [] SYSC_getdents fs/readdir.c:215 [inline] [] SyS_getdents+0x14a/0x270 fs/readdir.c:196 [] entry_SYSCALL_64_fastpath+0x1c/0x98 [] check_prev_add kernel/locking/lockdep.c:1853 [inline] [] check_prevs_add kernel/locking/lockdep.c:1958 [inline] [] validate_chain kernel/locking/lockdep.c:2144 [inline] [] __lock_acquire+0x371f/0x4b50 kernel/locking/lockdep.c:3213 [] lock_acquire+0x15e/0x460 kernel/locking/lockdep.c:3592 IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1 [] __mutex_lock_common kernel/locking/mutex.c:521 [inline] [] mutex_lock_nested+0xbb/0x850 kernel/locking/mutex.c:621 [] shmem_file_llseek+0xf1/0x240 mm/shmem.c:1816 [] vfs_llseek+0xa2/0xd0 fs/read_write.c:260 [] ashmem_llseek+0xe7/0x1f0 drivers/staging/android/ashmem.c:342 [] vfs_llseek fs/read_write.c:260 [inline] [] SYSC_lseek fs/read_write.c:285 [inline] [] SyS_lseek+0xeb/0x170 fs/read_write.c:276 [] entry_SYSCALL_64_fastpath+0x1c/0x98 other info that might help us debug this: Chain exists of: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ashmem_mutex); lock(&mm->mmap_sem); lock(ashmem_mutex); lock(&sb->s_type->i_mutex_key#10); *** DEADLOCK *** 1 lock held by syz-executor5/6230: #0: (ashmem_mutex){+.+.+.}, at: [] ashmem_llseek+0x56/0x1f0 drivers/staging/android/ashmem.c:330 stack backtrace: CPU: 1 PID: 6230 Comm: syz-executor5 Not tainted 4.4.120-gd63fdf6 #28 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 64b32ed0850f2aed ffff8800a9b87ad8 ffffffff81d0408d ffffffff851a0010 ffffffff851a9d00 ffffffff851be7c0 ffff8801c4f3e8f8 ffff8801c4f3e000 ffff8800a9b87b20 ffffffff81233ba1 ffff8801c4f3e8f8 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] print_circular_bug+0x271/0x310 kernel/locking/lockdep.c:1226 [] check_prev_add kernel/locking/lockdep.c:1853 [inline] [] check_prevs_add kernel/locking/lockdep.c:1958 [inline] [] validate_chain kernel/locking/lockdep.c:2144 [inline] [] __lock_acquire+0x371f/0x4b50 kernel/locking/lockdep.c:3213 [] lock_acquire+0x15e/0x460 kernel/locking/lockdep.c:3592 [] __mutex_lock_common kernel/locking/mutex.c:521 [inline] [] mutex_lock_nested+0xbb/0x850 kernel/locking/mutex.c:621 [] shmem_file_llseek+0xf1/0x240 mm/shmem.c:1816 [] vfs_llseek+0xa2/0xd0 fs/read_write.c:260 [] ashmem_llseek+0xe7/0x1f0 drivers/staging/android/ashmem.c:342 [] vfs_llseek fs/read_write.c:260 [inline] [] SYSC_lseek fs/read_write.c:285 [inline] [] SyS_lseek+0xeb/0x170 fs/read_write.c:276 [] entry_SYSCALL_64_fastpath+0x1c/0x98 netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor6'. audit_printk_skb: 3 callbacks suppressed audit: type=1400 audit(1521527405.731:15): avc: denied { accept } for pid=6536 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. audit: type=1400 audit(1521527406.391:16): avc: denied { getattr } for pid=6790 comm="syz-executor4" path="socket:[14945]" dev="sockfs" ino=14945 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket SELinux: Invalid class 86 syz-executor0 uses obsolete (PF_INET,SOCK_PACKET) SELinux: Invalid class 86 TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. SELinux: Invalid class 86 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket audit: type=1400 audit(1521527408.561:17): avc: denied { call } for pid=7470 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 binder: BINDER_SET_CONTEXT_MGR already set binder: 7470:7501 ioctl 40046207 0 returned -16 binder_alloc: 7470: binder_alloc_buf, no vma binder: 7470:7497 transaction failed 29189/-3, size 0-0 line 3128 binder: 7470:7506 got reply transaction with no transaction stack binder: 7470:7506 transaction failed 29201/-71, size 0-0 line 2921 binder: undelivered TRANSACTION_ERROR: 29201 audit: type=1400 audit(1521527408.731:18): avc: denied { getopt } for pid=7515 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 audit: type=1400 audit(1521527408.761:19): avc: denied { setopt } for pid=7515 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 binder: undelivered TRANSACTION_COMPLETE binder: undelivered transaction 4, process died. binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 capability: warning: `syz-executor5' uses deprecated v2 capabilities in a way that may be insecure Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable tmpfs: Bad mount option ÑÐÚ\š÷ým‘’‹ÔL¤Û­@¿¡Èò.‚é¿c ¯hŸ ¯ -_ß­' øÊ€Øè Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable tmpfs: Bad mount option ÑÐÚ\š÷ým‘’‹ÔL¤Û­@¿¡Èò.‚é¿c ¯hŸ ¯ -_ß­' øÊ€Øè binder: 7576:7592 transaction failed 29201/-22, size -8777552460166432489--1215977214997732570 line 3128 binder: BINDER_SET_CONTEXT_MGR already set binder: 7576:7608 ioctl 40046207 0 returned -16 binder_alloc: binder_alloc_mmap_handler: 7576 2000c000-2000e000 already mapped failed -16 keychord: invalid keycode count 0 keychord: invalid keycode count 0 keychord: invalid keycode count 0 netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. audit: type=1400 audit(1521527410.951:20): avc: denied { execute } for pid=8288 comm="syz-executor0" path="pipe:[18612]" dev="pipefs" ino=18612 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=fifo_file permissive=1 binder: 8319:8324 ioctl c018620b 200000c0 returned -14 binder: 8319:8334 ioctl c0306201 20008000 returned -14 binder_alloc: binder_alloc_mmap_handler: 8319 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 8319:8324 ioctl 40046207 0 returned -16 binder: 8319:8334 ioctl c018620b 200000c0 returned -14 program syz-executor7 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 program syz-executor7 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 program syz-executor7 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 netlink: 212 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 212 bytes leftover after parsing attributes in process `syz-executor2'. binder: 8566:8567 BC_CLEAR_DEATH_NOTIFICATION death notification not active binder: BINDER_SET_CONTEXT_MGR already set binder: 8566:8567 ioctl 40046207 0 returned -16 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=770 sclass=netlink_xfrm_socket audit: type=1400 audit(1521527413.131:21): avc: denied { setattr } for pid=8643 comm="syz-executor5" name="NETLINK" dev="sockfs" ino=18863 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'. audit: type=1400 audit(1521527413.431:22): avc: denied { create } for pid=8731 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 audit: type=1400 audit(1521527413.481:23): avc: denied { write } for pid=8731 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 binder: 8775:8781 ioctl c0306201 20004000 returned -14 Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable binder: 8775:8788 ioctl c0306201 20004000 returned -14 Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable