audit: type=1804 audit(1666278241.920:707): pid=4065 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir174424626/syzkaller.iYHyPy/1936/cgroup.controllers" dev="sda1" ino=14817 res=1 bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered disabled state bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered forwarding state INFO: task syz-executor.1:29095 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28648 29095 8146 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 audit: type=1804 audit(1666278242.110:708): pid=4085 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1101246716/syzkaller.pF23uM/471/bus" dev="sda1" ino=15745 res=1 netlink: 'syz-executor.0': attribute type 10 has an invalid length. audit: type=1804 audit(1666278242.110:709): pid=4085 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1101246716/syzkaller.pF23uM/471/bus" dev="sda1" ino=15745 res=1 bridge0: port 4(team0) entered disabled state audit: type=1804 audit(1666278242.110:710): pid=4085 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1101246716/syzkaller.pF23uM/471/bus" dev="sda1" ino=15745 res=1 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 audit: type=1804 audit(1666278242.110:711): pid=4085 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1101246716/syzkaller.pF23uM/471/bus" dev="sda1" ino=15745 res=1 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 audit: type=1804 audit(1666278242.110:712): pid=4085 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1101246716/syzkaller.pF23uM/471/bus" dev="sda1" ino=15745 res=1 audit: type=1804 audit(1666278242.110:713): pid=4085 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1101246716/syzkaller.pF23uM/471/bus" dev="sda1" ino=15745 res=1 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 audit: type=1804 audit(1666278242.110:714): pid=4085 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1101246716/syzkaller.pF23uM/471/bus" dev="sda1" ino=15745 res=1 inode_lock include/linux/fs.h:748 [inline] fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 filp_close+0xb4/0x160 fs/open.c:1162 __close_fd+0x133/0x200 fs/file.c:636 __do_sys_close fs/open.c:1181 [inline] __se_sys_close fs/open.c:1179 [inline] __x64_sys_close+0x69/0x100 fs/open.c:1179 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fab3dd4137b Code: Bad RIP value. RSP: 002b:00007ffe02f67680 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fab3dd4137b RDX: 0000001b30a20000 RSI: 0000001b30a26ee4 RDI: 0000000000000004 RBP: 00007fab3deb1980 R08: 0000000000000000 R09: 000000003253460c R10: 0011875dbd5ed33c R11: 0000000000000293 R12: 00000000000bc603 R13: 00007ffe02f67780 R14: 00007fab3deb0120 R15: 0000000000000032 INFO: task syz-executor.1:29099 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27592 29099 8146 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 fuse_wait_on_page_writeback fs/fuse/file.c:383 [inline] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 fs/fuse/file.c:379 fuse_launder_page fs/fuse/file.c:2033 [inline] fuse_launder_page+0xb6/0xe0 fs/fuse/file.c:2026 do_launder_page mm/truncate.c:655 [inline] invalidate_inode_pages2_range+0x795/0x1110 mm/truncate.c:725 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182 fuse_open_common+0x236/0x2c0 fs/fuse/file.c:222 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fab3dd8f5a9 Code: Bad RIP value. RSP: 002b:00007fab3c702168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fab3deaff80 RCX: 00007fab3dd8f5a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007fab3ddea580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe02f6761f R14: 00007fab3c702300 R15: 0000000000022000 batman_adv: batadv0: Adding interface: team0 INFO: task syz-executor.1:29110 blocked for more than 140 seconds. batman_adv: batadv0: The MTU of interface team0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28856 29110 8146 0x00000004 Call Trace: batman_adv: batadv0: Interface activated: team0 context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 netlink: 'syz-executor.0': attribute type 10 has an invalid length. batman_adv: batadv0: Interface deactivated: team0 io_schedule+0xb5/0x120 kernel/sched/core.c:5181 wait_on_page_bit_common mm/filemap.c:1123 [inline] __lock_page+0x316/0x460 mm/filemap.c:1296 batman_adv: batadv0: Removing interface: team0 lock_page include/linux/pagemap.h:484 [inline] invalidate_inode_pages2_range+0xb3f/0x1110 mm/truncate.c:713 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182 fuse_open_common+0x254/0x2c0 fs/fuse/file.c:222 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fab3dd8f5a9 Code: Bad RIP value. RSP: 002b:00007fab3c6e1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fab3deb0050 RCX: 00007fab3dd8f5a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007fab3ddea580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe02f6761f R14: 00007fab3c6e1300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/u4:2/33: bridge0: port 4(team0) entered blocking state 1 lock held by khungtaskd/1570: bridge0: port 4(team0) entered disabled state #0: 00000000410c427a (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 bridge0: port 4(team0) entered blocking state bridge0: port 4(team0) entered forwarding state netlink: 28 bytes leftover after parsing attributes in process `syz-executor.5'. 4 locks held by kworker/u4:4/2900: batman_adv: The newly added mac address (aa:aa:aa:aa:aa:1a) already exists on: team0 1 lock held by in:imklog/7808: batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! #0: 00000000bf0e1363 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by kworker/0:5/20858: #0: 00000000b9fdb725 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000521cce4a ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 netlink: 'syz-executor.0': attribute type 10 has an invalid length. 2 locks held by kworker/u4:3/22319: 1 lock held by syz-executor.1/29095: #0: 00000000f477e64e (&sb->s_type->i_mutex_key#37){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000f477e64e (&sb->s_type->i_mutex_key#37){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.1/29110: #0: 00000000b8460e1c (sb_writers#30){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000b8460e1c (sb_writers#30){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000f477e64e (&sb->s_type->i_mutex_key#37){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000f477e64e (&sb->s_type->i_mutex_key#37){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 2 locks held by syz-executor.4/4200: 2 locks held by syz-executor.4/4201: #0: 00000000df5099f7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000df5099f7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000008ef26d04 (&type->i_mutex_dir_key#3){++++}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000008ef26d04 (&type->i_mutex_dir_key#3){++++}, at: do_last fs/namei.c:3324 [inline] #1: 000000008ef26d04 (&type->i_mutex_dir_key#3){++++}, at: path_openat+0x1071/0x2df0 fs/namei.c:3537 3 locks held by syz-executor.0/4199: 2 locks held by syz-executor.5/4195: 2 locks held by syz-executor.2/4204: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4199 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:write_comp_data+0x23/0x70 kernel/kcov.c:122 Code: 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 c0 df 01 00 65 8b 05 7a 59 9f 7e a9 00 01 1f 00 75 4f 8b 86 60 13 00 00 <83> f8 03 75 44 48 8b 86 68 13 00 00 8b b6 64 13 00 00 48 8b 38 48 RSP: 0018:ffff88803fd06ac8 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff87f00491 RDX: 0000000000000000 RSI: ffff8880a988c3c0 RDI: 0000000000000005 RBP: 0000000000000002 R08: 0000000000000009 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000001 FS: 00007f18f7dc2700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f18f7d5f718 CR3: 000000003ee09000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: number+0x481/0xa90 lib/vsprintf.c:502 vsnprintf+0xf07/0x14f0 lib/vsprintf.c:2385 snprintf+0xbb/0xf0 lib/vsprintf.c:2452 print_time kernel/printk/printk.c:1262 [inline] print_prefix+0x387/0x3f0 kernel/printk/printk.c:1287 msg_print_text+0x82/0x1c0 kernel/printk/printk.c:1310 console_unlock+0x321/0x1110 kernel/printk/printk.c:2434 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 validate_nla.cold+0x24/0x59 lib/nlattr.c:85 nla_parse+0x135/0x290 lib/nlattr.c:254 nlmsg_parse include/net/netlink.h:398 [inline] rtnl_newlink+0x1e6/0x15c0 net/core/rtnetlink.c:2953 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f18f944f5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f18f7dc2168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f18f956ff80 RCX: 00007f18f944f5a9 RDX: 0000000000000000 RSI: 0000000020000600 RDI: 0000000000000004 RBP: 00007f18f94aa580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe0fd99f6f R14: 00007f18f7dc2300 R15: 0000000000022000