binder: 13053:13058 ioctl 40046207 0 returned -16 sp0: Synchronizing with TNC sp0: Found TNC ------------[ cut here ]------------ kernel BUG at kernel/time/timer.c:1089! binder: BINDER_SET_CONTEXT_MGR already set binder: 13053:13058 ioctl 40046207 0 returned -16 invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 13056 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888050258600 task.stack: ffff888059c78000 RIP: 0010:add_timer kernel/time/timer.c:1089 [inline] RIP: 0010:add_timer+0x689/0xae0 kernel/time/timer.c:1087 RSP: 0018:ffff888059c7fb20 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff888059c7fb90 RCX: ffffc90008035000 RDX: 00000000000073bc RSI: ffffffff81503e89 RDI: ffff8880730b3648 RBP: ffff888059c7fbb8 R08: ffff888050258600 R09: ffff888050258ea0 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880730b3640 R13: dffffc0000000000 R14: ffff888059c7fc88 R15: ffff8880730b3640 FS: 00007fef90426700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc07b15ee8 CR3: 000000004e611000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: decode_prio_command drivers/net/hamradio/6pack.c:934 [inline] sixpack_decode drivers/net/hamradio/6pack.c:1003 [inline] sixpack_receive_buf drivers/net/hamradio/6pack.c:458 [inline] sixpack_receive_buf+0xc9a/0x1170 drivers/net/hamradio/6pack.c:435 tiocsti drivers/tty/tty_io.c:2186 [inline] tty_ioctl+0xded/0x1320 drivers/tty/tty_io.c:2572 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007fef90425c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a6f9 RDX: 0000000020000000 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fef904266d4 R13: 00000000004c585b R14: 00000000004dba30 R15: 00000000ffffffff Code: 84 8a 00 00 00 e8 c8 10 0d 00 65 ff 0d 61 af b1 7e 0f 85 3c fd ff ff e8 b6 10 0d 00 e8 05 04 b0 ff e9 2d fd ff ff e8 a7 10 0d 00 <0f> 0b e8 a0 10 0d 00 49 c7 c5 80 4a 02 00 e8 14 b3 ba 01 48 ba RIP: add_timer kernel/time/timer.c:1089 [inline] RSP: ffff888059c7fb20 RIP: add_timer+0x689/0xae0 kernel/time/timer.c:1087 RSP: ffff888059c7fb20 6pack: protocol violation kobject: 'loop2' (ffff8880a40624e0): kobject_uevent_env IPVS: ftp: loaded support on port[0] = 21 kobject: 'loop2' (ffff8880a40624e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'lo' (ffff888059a6c7b0): kobject_add_internal: parent: 'net', set: 'devices' 6pack: bad checksum 6d 6pack: protocol violation kobject: 'lo' (ffff888059a6c7b0): kobject_uevent_env 6pack: protocol violation 6pack: protocol violation kobject: 'kvm' (ffff8882194e6110): kobject_uevent_env kobject: 'lo' (ffff888059a6c7b0): fill_kobj_path: path = '/devices/virtual/net/lo' 6pack: protocol violation kobject: 'kvm' (ffff8882194e6110): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (ffff8880a416cee0): kobject_uevent_env 6pack: protocol violation kobject: 'queues' (ffff888059d85648): kobject_add_internal: parent: 'lo', set: '' 6pack: protocol violation kobject: 'loop5' (ffff8880a416cee0): fill_kobj_path: path = '/devices/virtual/block/loop5' 6pack: protocol violation 6pack: bad checksum 21 kobject: 'queues' (ffff888059d85648): kobject_uevent_env 6pack: protocol violation kobject: 'queues' (ffff888059d85648): kobject_uevent_env: filter function caused the event to drop! kobject: 'kvm' (ffff8882194e6110): kobject_uevent_env kobject: 'kvm' (ffff8882194e6110): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'rx-0' (ffff8880a9e7cd90): kobject_add_internal: parent: 'queues', set: 'queues' 6pack: protocol violation kobject: 'loop3' (ffff8880a407a560): kobject_uevent_env kauditd_printk_skb: 72 callbacks suppressed audit: type=1400 audit(1575830533.259:5143): avc: denied { create } for pid=13100 comm="syz-executor.3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 kobject: 'rx-0' (ffff8880a9e7cd90): kobject_uevent_env 6pack: protocol violation 6pack: bad checksum a8 kobject: 'loop3' (ffff8880a407a560): fill_kobj_path: path = '/devices/virtual/block/loop3' 6pack: bad checksum 02 kobject: 'kvm' (ffff8882194e6110): kobject_uevent_env kobject: 'kvm' (ffff8882194e6110): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'rx-0' (ffff8880a9e7cd90): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' 6pack: protocol violation kobject: 'loop4' (ffff8880a40f45e0): kobject_uevent_env audit: type=1400 audit(1575830533.259:5144): avc: denied { write } for pid=13100 comm="syz-executor.3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 6pack: protocol violation kobject: 'loop4' (ffff8880a40f45e0): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'tx-0' (ffff88808a3a4818): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop2' (ffff8880a40624e0): kobject_uevent_env 6pack: protocol violation kobject: 'loop2' (ffff8880a40624e0): fill_kobj_path: path = '/devices/virtual/block/loop2' 6pack: protocol violation 6pack: protocol violation kobject: 'tx-0' (ffff88808a3a4818): kobject_uevent_env 6pack: protocol violation kobject: 'tx-0' (ffff88808a3a4818): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' kobject: 'loop4' (ffff8880a40f45e0): kobject_uevent_env 6pack: protocol violation audit: type=1400 audit(1575830533.259:5145): avc: denied { read } for pid=13100 comm="syz-executor.3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 6pack: protocol violation kobject: 'loop4' (ffff8880a40f45e0): fill_kobj_path: path = '/devices/virtual/block/loop4' audit: type=1400 audit(1575830533.369:5146): avc: denied { map } for pid=13115 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop5' (ffff8880a416cee0): kobject_uevent_env 6pack: protocol violation 6pack: protocol violation audit: type=1400 audit(1575830533.379:5147): avc: denied { map } for pid=13115 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1575830533.389:5148): avc: denied { map } for pid=13115 comm="modprobe" path="/lib/x86_64-linux-gnu/libkmod.so.2.1.3" dev="sda1" ino=2811 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop5' (ffff8880a416cee0): fill_kobj_path: path = '/devices/virtual/block/loop5' audit: type=1400 audit(1575830533.429:5149): avc: denied { map } for pid=13040 comm="ifup" path="/sbin/ifup" dev="sda1" ino=16080 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 6pack: protocol violation audit: type=1400 audit(1575830533.459:5150): avc: denied { map } for pid=13117 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop5' (ffff8880a416cee0): kobject_uevent_env 6pack: protocol violation 6pack: protocol violation 6pack: protocol violation audit: type=1400 audit(1575830533.609:5151): avc: denied { map } for pid=13118 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 6pack: bad checksum 35 audit: type=1400 audit(1575830533.699:5152): avc: denied { map } for pid=13045 comm="ifdown" path="/sbin/ifdown" dev="sda1" ino=16080 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop5' (ffff8880a416cee0): fill_kobj_path: path = '/devices/virtual/block/loop5' 6pack: protocol violation 6pack: protocol violation 6pack: protocol violation 6pack: bad checksum 0c kobject: 'loop3' (ffff8880a407a560): kobject_uevent_env 6pack: bad checksum 3c 6pack: bad checksum 2b kobject: 'loop3' (ffff8880a407a560): fill_kobj_path: path = '/devices/virtual/block/loop3' 6pack: bad checksum 20 6pack: protocol violation 6pack: protocol violation 6pack: bad checksum 07 ---[ end trace b8b55be40bbdd73b ]--- 6pack: bad checksum 1d 6pack: protocol violation