INFO: task systemd-udevd:8231 blocked for more than 143 seconds. Not tainted 5.3.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26568 8231 3899 0x00004100 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x82a/0x18e0 kernel/sched/core.c:3880 schedule+0x8f/0x260 kernel/sched/core.c:3944 io_schedule+0x1c/0x70 kernel/sched/core.c:5600 wait_on_page_bit_common mm/filemap.c:1166 [inline] wait_on_page_bit+0x357/0x8a0 mm/filemap.c:1215 wait_on_page_locked include/linux/pagemap.h:517 [inline] wait_on_page_read mm/filemap.c:2793 [inline] do_read_cache_page+0x36f/0xbf0 mm/filemap.c:2836 read_cache_page+0x3a/0x60 mm/filemap.c:2920 read_mapping_page include/linux/pagemap.h:386 [inline] read_dev_sector+0x68/0x320 block/partition-generic.c:667 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x109/0xde0 block/partitions/acorn.c:361 check_partition+0x314/0x5da block/partitions/check.c:167 rescan_partitions+0x192/0x8b0 block/partition-generic.c:531 __blkdev_get+0xdc6/0x12e0 fs/block_dev.c:1680 blkdev_get+0x18e/0x210 fs/block_dev.c:1750 blkdev_open+0x19f/0x200 fs/block_dev.c:1886 do_dentry_open+0x3f1/0x1010 fs/open.c:797 vfs_open+0x9a/0xc0 fs/open.c:906 do_last fs/namei.c:3416 [inline] path_openat+0x89e/0x29c0 fs/namei.c:3533 do_filp_open+0x177/0x250 fs/namei.c:3563 do_sys_open+0x1dd/0x3b0 fs/open.c:1089 __do_sys_open fs/open.c:1107 [inline] __se_sys_open fs/open.c:1102 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1102 do_syscall_64+0xd0/0x540 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc9c3fef840 Code: Bad RIP value. RSP: 002b:00007ffd34f6d9b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005585dbea54f0 RCX: 00007fc9c3fef840 RDX: 00005585db567fe3 RSI: 00000000000a0800 RDI: 00005585dbea5620 RBP: 00007ffd34f6db30 R08: 00005585db567670 R09: 0000000000000010 R10: 00005585db567d0c R11: 0000000000000246 R12: 00007ffd34f6da80 R13: 00005585dbea3990 R14: 0000000000000003 R15: 000000000000000e INFO: task systemd-udevd:9096 blocked for more than 143 seconds. Not tainted 5.3.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D26568 9096 3899 0x00004100 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x82a/0x18e0 kernel/sched/core.c:3880 schedule+0x8f/0x260 kernel/sched/core.c:3944 io_schedule+0x1c/0x70 kernel/sched/core.c:5600 wait_on_page_bit_common mm/filemap.c:1166 [inline] wait_on_page_bit+0x357/0x8a0 mm/filemap.c:1215 wait_on_page_locked include/linux/pagemap.h:517 [inline] wait_on_page_read mm/filemap.c:2793 [inline] do_read_cache_page+0x36f/0xbf0 mm/filemap.c:2836 read_cache_page+0x3a/0x60 mm/filemap.c:2920 read_mapping_page include/linux/pagemap.h:386 [inline] read_dev_sector+0x68/0x320 block/partition-generic.c:667 read_part_sector block/partitions/check.h:38 [inline] adfspart_check_ICS+0x109/0xde0 block/partitions/acorn.c:361 check_partition+0x314/0x5da block/partitions/check.c:167 rescan_partitions+0x192/0x8b0 block/partition-generic.c:531 __blkdev_get+0xdc6/0x12e0 fs/block_dev.c:1680 blkdev_get+0x18e/0x210 fs/block_dev.c:1750 blkdev_open+0x19f/0x200 fs/block_dev.c:1886 do_dentry_open+0x3f1/0x1010 fs/open.c:797 vfs_open+0x9a/0xc0 fs/open.c:906 do_last fs/namei.c:3416 [inline] path_openat+0x89e/0x29c0 fs/namei.c:3533 do_filp_open+0x177/0x250 fs/namei.c:3563 do_sys_open+0x1dd/0x3b0 fs/open.c:1089 __do_sys_open fs/open.c:1107 [inline] __se_sys_open fs/open.c:1102 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1102 do_syscall_64+0xd0/0x540 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc9c3fef840 Code: Bad RIP value. RSP: 002b:00007ffd34f6d3c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005585dbea54f0 RCX: 00007fc9c3fef840 RDX: 00005585db567fe3 RSI: 00000000000a0800 RDI: 00005585dbea4100 RBP: 00007ffd34f6d540 R08: 00005585db567670 R09: 0000000000000010 R10: 00005585db567d0c R11: 0000000000000246 R12: 00007ffd34f6d490 R13: 00005585dbea3970 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.4:18508 blocked for more than 144 seconds. Not tainted 5.3.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28480 18508 6771 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x82a/0x18e0 kernel/sched/core.c:3880 schedule+0x8f/0x260 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x420/0x1460 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 blkdev_put+0x25/0x480 fs/block_dev.c:1927 blkdev_close+0x88/0xd0 fs/block_dev.c:1976 __fput+0x25a/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x108/0x180 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1f2/0x2e0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x462/0x540 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c829 Code: Bad RIP value. RSP: 002b:00007f3afe1e0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00000000004e8e20 RCX: 000000000045c829 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000409 R14: 00000000004c6a64 R15: 00007f3afe1e16d4 INFO: task syz-executor.4:18530 blocked for more than 144 seconds. Not tainted 5.3.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28776 18530 6771 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x82a/0x18e0 kernel/sched/core.c:3880 schedule+0x8f/0x260 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x420/0x1460 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 __blkdev_get+0x1a1/0x12e0 fs/block_dev.c:1596 blkdev_get+0x18e/0x210 fs/block_dev.c:1750 blkdev_open+0x19f/0x200 fs/block_dev.c:1886 do_dentry_open+0x3f1/0x1010 fs/open.c:797 vfs_open+0x9a/0xc0 fs/open.c:906 do_last fs/namei.c:3416 [inline] path_openat+0x89e/0x29c0 fs/namei.c:3533 do_filp_open+0x177/0x250 fs/namei.c:3563 do_sys_open+0x1dd/0x3b0 fs/open.c:1089 __do_sys_open fs/open.c:1107 [inline] __se_sys_open fs/open.c:1102 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1102 do_syscall_64+0xd0/0x540 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x416621 Code: Bad RIP value. RSP: 002b:00007f3afe1bf7a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000416621 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f3afe1bf850 RBP: 000000000078bfa0 R08: 000000000000000f R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000ffffffff R13: 0000000000000c0f R14: 00000000004ce39d R15: 00007f3afe1c06d4 INFO: task syz-executor.0:18512 blocked for more than 144 seconds. Not tainted 5.3.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28480 18512 6773 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x82a/0x18e0 kernel/sched/core.c:3880 schedule+0x8f/0x260 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x420/0x1460 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 blkdev_put+0x25/0x480 fs/block_dev.c:1927 blkdev_close+0x88/0xd0 fs/block_dev.c:1976 __fput+0x25a/0x780 fs/file_table.c:280 ____fput+0x9/0x10 fs/file_table.c:313 task_work_run+0x108/0x180 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1f2/0x2e0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x462/0x540 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c829 Code: Bad RIP value. RSP: 002b:00007f6bcedf3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00000000004e8e20 RCX: 000000000045c829 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000409 R14: 00000000004c6a64 R15: 00007f6bcedf46d4 INFO: task syz-executor.0:18531 blocked for more than 144 seconds. Not tainted 5.3.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28776 18531 6773 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x82a/0x18e0 kernel/sched/core.c:3880 schedule+0x8f/0x260 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x420/0x1460 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 __blkdev_get+0x1a1/0x12e0 fs/block_dev.c:1596 blkdev_get+0x18e/0x210 fs/block_dev.c:1750 blkdev_open+0x19f/0x200 fs/block_dev.c:1886 do_dentry_open+0x3f1/0x1010 fs/open.c:797 vfs_open+0x9a/0xc0 fs/open.c:906 do_last fs/namei.c:3416 [inline] path_openat+0x89e/0x29c0 fs/namei.c:3533 do_filp_open+0x177/0x250 fs/namei.c:3563 do_sys_open+0x1dd/0x3b0 fs/open.c:1089 __do_sys_open fs/open.c:1107 [inline] __se_sys_open fs/open.c:1102 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1102 do_syscall_64+0xd0/0x540 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x416621 Code: Bad RIP value. RSP: 002b:00007f6bcedd27a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000416621 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f6bcedd2850 RBP: 000000000078bfa0 R08: 000000000000000f R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000ffffffff R13: 0000000000000c0f R14: 00000000004ce39d R15: 00007f6bcedd36d4 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 1098 Comm: khungtaskd Not tainted 5.3.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x165/0x21a lib/dump_stack.c:113 nmi_cpu_backtrace.cold.0+0x49/0x86 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x194/0x1bd 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:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x6a3/0xb60 kernel/hung_task.c:289 kthread+0x331/0x3f0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x12/0x20 arch/x86/include/asm/irqflags.h:60