Bluetooth: hci5 command 0x0406 tx timeout Bluetooth: hci3 command 0x0406 tx timeout Bluetooth: hci2 command 0x0406 tx timeout Bluetooth: hci1 command 0x0406 tx timeout Bluetooth: hci0 command 0x0406 tx timeout INFO: task syz-executor.4:9668 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28344 9668 8324 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x470 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x418e0b RSP: 002b:00007fffc3458f80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000418e0b RDX: 00000000000003e7 RSI: 0000001b2bc200f4 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2bc200fc R10: 0019456efd8c6e73 R11: 0000000000000293 R12: 000000000056c9e0 R13: 000000000000c35d R14: 000000000056c9e0 R15: 000000000056bf60 INFO: task systemd-udevd:9672 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26536 9672 4628 0x00000104 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5032 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcc0 block/partitions/acorn.c:366 check_partition+0x302/0x5c0 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb6f/0x2760 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1d0/0x350 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f03ee1a4840 RSP: 002b:00007ffd62e527f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005606facca030 RCX: 00007f03ee1a4840 RDX: 00005606f9117fe3 RSI: 00000000000a0800 RDI: 00005606facb9fd0 RBP: 00007ffd62e52970 R08: 00005606f9117670 R09: 0000000000000010 R10: 00005606f9117d0c R11: 0000000000000246 R12: 00007ffd62e528c0 R13: 00005606facc9b00 R14: 0000000000000003 R15: 000000000000000e INFO: task systemd-udevd:9676 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26536 9676 4628 0x00000104 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5032 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcc0 block/partitions/acorn.c:366 check_partition+0x302/0x5c0 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb6f/0x2760 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1d0/0x350 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f03ee1a4840 RSP: 002b:00007ffd62e52de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005606facb4de0 RCX: 00007f03ee1a4840 RDX: 00005606f9117fe3 RSI: 00000000000a0800 RDI: 00005606faccb5a0 RBP: 00007ffd62e52f60 R08: 00005606f9117670 R09: 0000000000000010 R10: 00005606f9117d0c R11: 0000000000000246 R12: 00007ffd62e52eb0 R13: 00005606facc6550 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.5:9681 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28344 9681 8323 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x470 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x418e0b RSP: 002b:00007fff72a8ec40 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000418e0b RDX: 00000000000003e7 RSI: 0000001b33a200f4 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b33a200fc R10: 001ca0db39b03c53 R11: 0000000000000293 R12: 000000000056c9e0 R13: 000000000000c3ce R14: 000000000056c9e0 R15: 000000000056bf60 INFO: task syz-executor.0:9727 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28344 9727 8326 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x470 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x418e0b RSP: 002b:00007ffda7d2ec30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000418e0b RDX: 00000000000003e7 RSI: 0000001b2be200f4 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2be200fc R10: 0011a1a02bc1e753 R11: 0000000000000293 R12: 000000000056c9e0 R13: 000000000000c644 R14: 000000000056c9e0 R15: 000000000056bf60 INFO: task systemd-udevd:9732 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26536 9732 4628 0x00000104 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5032 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcc0 block/partitions/acorn.c:366 check_partition+0x302/0x5c0 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb6f/0x2760 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1d0/0x350 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f03ee1a4840 RSP: 002b:00007ffd62e527f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005606facb9ff0 RCX: 00007f03ee1a4840 RDX: 00005606f9117fe3 RSI: 00000000000a0800 RDI: 00005606facb4de0 RBP: 00007ffd62e52970 R08: 00005606f9117670 R09: 0000000000000010 R10: 00005606f9117d0c R11: 0000000000000246 R12: 00007ffd62e528c0 R13: 00005606facc6550 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.1:9749 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28344 9749 8327 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x470 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x418e0b RSP: 002b:00007ffedf74b480 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000418e0b RDX: 00000000000003e7 RSI: 0000001b2c1200f4 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2c1200fc R10: 0013a75bc35d5081 R11: 0000000000000293 R12: 000000000056c9e0 R13: 000000000000c689 R14: 000000000056c9e0 R15: 000000000056bf60 INFO: task systemd-udevd:9754 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26536 9754 4628 0x00000104 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5032 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcc0 block/partitions/acorn.c:366 check_partition+0x302/0x5c0 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb6f/0x2760 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1d0/0x350 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f03ee1a4840 RSP: 002b:00007ffd62e527f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005606facca030 RCX: 00007f03ee1a4840 RDX: 00005606f9117fe3 RSI: 00000000000a0800 RDI: 00005606facc62f0 RBP: 00007ffd62e52970 R08: 00005606f9117670 R09: 0000000000000010 R10: 00005606f9117d0c R11: 0000000000000246 R12: 00007ffd62e528c0 R13: 00005606facb9240 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.3:9763 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28152 9763 8321 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x519/0x1490 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 blkdev_put+0x25/0x470 fs/block_dev.c:1826 blkdev_close+0x88/0xd0 fs/block_dev.c:1875 __fput+0x232/0x740 fs/file_table.c:210 ____fput+0x9/0x10 fs/file_table.c:244 task_work_run+0xe5/0x170 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x14a/0x190 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x418e0b RSP: 002b:00007ffc26a94f60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000418e0b RDX: 00000000000003e7 RSI: 0000001b339200f4 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b339200fc R10: 00152ddb176b47cf R11: 0000000000000293 R12: 000000000056c9e0 R13: 000000000000c6bc R14: 000000000056c9e0 R15: 000000000056bf60 INFO: task systemd-udevd:9768 blocked for more than 140 seconds. Not tainted 4.14.223-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26536 9768 4628 0x00000104 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x824/0x1ee0 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 io_schedule+0x1c/0x70 kernel/sched/core.c:5032 wait_on_page_bit_common mm/filemap.c:1025 [inline] wait_on_page_bit+0x18e/0x300 mm/filemap.c:1058 wait_on_page_locked include/linux/pagemap.h:526 [inline] wait_on_page_read mm/filemap.c:2680 [inline] do_read_cache_page+0x3eb/0xa40 mm/filemap.c:2719 read_cache_page+0x40/0x70 mm/filemap.c:2809 read_mapping_page include/linux/pagemap.h:398 [inline] read_dev_sector+0xc0/0x3b0 block/partition-generic.c:659 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x101/0xcc0 block/partitions/acorn.c:366 check_partition+0x302/0x5c0 block/partitions/check.c:167 rescan_partitions+0x199/0x8c0 block/partition-generic.c:523 __blkdev_get+0xcb7/0xff0 fs/block_dev.c:1541 blkdev_get+0x265/0x890 fs/block_dev.c:1611 blkdev_open+0x19f/0x200 fs/block_dev.c:1772 do_dentry_open+0x3e4/0xde0 fs/open.c:777 vfs_open+0xfc/0x240 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0xb6f/0x2760 fs/namei.c:3569 do_filp_open+0x16b/0x220 fs/namei.c:3603 do_sys_open+0x1d0/0x350 fs/open.c:1081 SYSC_open fs/open.c:1099 [inline] SyS_open+0x19/0x20 fs/open.c:1094 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f03ee1a4840 RSP: 002b:00007ffd62e52de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005606facc89d0 RCX: 00007f03ee1a4840 RDX: 00005606f9117fe3 RSI: 00000000000a0800 RDI: 00005606facc3590 RBP: 00007ffd62e52f60 R08: 00005606f9117670 R09: 0000000000000010 R10: 00005606f9117d0c R11: 0000000000000246 R12: 00007ffd62e52eb0 R13: 00005606facba010 R14: 0000000000000003 R15: 000000000000000e Showing all locks held in the system: 1 lock held by khungtaskd/1530: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4548 1 lock held by in:imklog/7687: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x8e/0xc0 fs/file.c:769 1 lock held by syz-executor.4/9668: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x470 fs/block_dev.c:1826 1 lock held by systemd-udevd/9672: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by systemd-udevd/9676: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by syz-executor.5/9681: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x470 fs/block_dev.c:1826 1 lock held by syz-executor.0/9727: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x470 fs/block_dev.c:1826 1 lock held by systemd-udevd/9732: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by syz-executor.1/9749: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x470 fs/block_dev.c:1826 1 lock held by systemd-udevd/9754: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by syz-executor.3/9763: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x470 fs/block_dev.c:1826 1 lock held by systemd-udevd/9768: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 1 lock held by syz-executor.2/9777: #0: (&bdev->bd_mutex){+.+.}, at: [] blkdev_put+0x25/0x470 fs/block_dev.c:1826 1 lock held by systemd-udevd/9780: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x185/0xff0 fs/block_dev.c:1455 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1530 Comm: khungtaskd Not tainted 4.14.223-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+0x14b/0x1e7 lib/dump_stack.c:58 nmi_cpu_backtrace.cold.0+0x3c/0x78 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xf6/0x120 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x51b/0xa70 kernel/hung_task.c:274 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.223-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker task: ffff8880b5444140 task.stack: ffff8880b5450000 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:774 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:796 [inline] RIP: 0010:lock_release+0xd3/0x820 kernel/locking/lockdep.c:4013 RSP: 0018:ffff8880b5457bd8 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: 1ffff11016a8af7e RCX: ffff8880b54449c8 RDX: 1ffffffff11e10b8 RSI: 0000000000000001 RDI: ffffffff88f085c0 RBP: ffff8880b5457c78 R08: 0000000000003b40 R09: 0000000000000000 R10: 0000000000000050 R11: ffff8880b5444140 R12: ffff8880a6091ee8 R13: ffff8880b5444140 R14: 0000000000000000 R15: ffff88808feb5fc0 FS: 0000000000000000(0000) GS:ffff8880ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0e3a9fd000 CR3: 000000009424f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:174 [inline] _raw_spin_unlock_bh+0x1a/0x40 kernel/locking/spinlock.c:208 spin_unlock_bh include/linux/spinlock.h:362 [inline] batadv_nc_purge_paths+0x1c5/0x2c0 net/batman-adv/network-coding.c:479 batadv_nc_worker+0x1f6/0x630 net/batman-adv/network-coding.c:727 process_one_work+0x74f/0x1620 kernel/workqueue.c:2116 worker_thread+0xcc/0xee0 kernel/workqueue.c:2250 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: f0 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 72 06 00 00 48 83 3d 33 ae ae 07 00 0f 84 31 05 00 00 <9c> 58 0f 1f 44 00 00 48 c7 c7 d0 85 f0 88 48 89 85 68 ff ff ff