INFO: task systemd-udevd:13090 blocked for more than 143 seconds. Tainted: G W 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:24952 pid:13090 ppid: 4860 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 io_schedule+0x83/0x100 kernel/sched/core.c:8008 wait_on_page_bit_common+0x9ca/0x1030 mm/filemap.c:1301 wait_on_page_bit mm/filemap.c:1362 [inline] wait_on_page_locked include/linux/pagemap.h:689 [inline] wait_on_page_read+0x19d/0x430 mm/filemap.c:3312 do_read_cache_page+0xb1b/0xe10 mm/filemap.c:3355 read_mapping_page include/linux/pagemap.h:515 [inline] read_part_sector+0x118/0x500 block/partitions/core.c:726 adfspart_check_ICS+0x9e/0xa40 block/partitions/acorn.c:360 check_partition block/partitions/core.c:147 [inline] blk_add_partitions block/partitions/core.c:611 [inline] bdev_disk_changed+0x764/0x1690 block/partitions/core.c:697 blkdev_get_whole+0x42c/0x500 fs/block_dev.c:1267 blkdev_get_by_dev+0x339/0xdc0 fs/block_dev.c:1415 blkdev_open+0x132/0x2c0 fs/block_dev.c:1510 do_dentry_open+0x7cb/0x1020 fs/open.c:826 do_open fs/namei.c:3374 [inline] path_openat+0x27e7/0x36b0 fs/namei.c:3507 do_filp_open+0x253/0x4d0 fs/namei.c:3534 do_sys_openat2+0x124/0x460 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_open fs/open.c:1228 [inline] __se_sys_open fs/open.c:1224 [inline] __x64_sys_open+0x221/0x270 fs/open.c:1224 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5dff95d840 RSP: 002b:00007fff331710e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00005652d2eb1a00 RCX: 00007f5dff95d840 RDX: 00005652d22c1fe3 RSI: 00000000000a0800 RDI: 00005652d2eadf30 RBP: 00007fff33171260 R08: 00005652d22c1670 R09: 0000000000000010 R10: 00005652d22c1d0c R11: 0000000000000246 R12: 00007fff331711b0 R13: 00005652d2eae160 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.4:13695 blocked for more than 143 seconds. Tainted: G W 5.14.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27864 pid:13695 ppid: 8457 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 blkdev_put+0xfc/0x810 fs/block_dev.c:1532 blkdev_close+0x7a/0xa0 fs/block_dev.c:1584 __fput+0x352/0x7b0 fs/file_table.c:280 task_work_run+0x146/0x1c0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x201/0x220 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:302 do_syscall_64+0x4c/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4193eb RSP: 002b:00007ffc0ed9c5d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00000000004193eb RDX: 0000001b2c422a18 RSI: ffffffff813aca8d RDI: 0000000000000006 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2c422314 R10: 0000000000000057 R11: 0000000000000293 R12: 000000000056cb00 R13: 000000000056cb00 R14: 000000000056bf80 R15: 0000000000044cb2 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 1602 Comm: khungtaskd Tainted: G W 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1d3/0x29f lib/dump_stack.c:105 nmi_cpu_backtrace+0x16c/0x190 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x191/0x2f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xd06/0xd50 kernel/hung_task.c:295 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4847 Comm: systemd-journal Tainted: G W 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_read_lock_sched_held+0xd/0x110 kernel/rcu/update.c:120 Code: 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 e9 cb 66 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 53 48 83 e4 e0 <48> 83 ec 60 65 48 8b 04 25 28 00 00 00 48 89 44 24 50 49 be 00 00 RSP: 0018:ffffc9000160f700 EFLAGS: 00000286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8161cedb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8dba3928 RBP: ffffc9000160f728 R08: dffffc0000000000 R09: fffffbfff1b74726 R10: fffffbfff1b74726 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff920002c1ef8 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f6d864bd8c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6d839a9000 CR3: 000000002933a000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_lock_acquire+0x59/0x190 include/trace/events/lock.h:13 lock_acquire+0xa4/0x4a0 kernel/locking/lockdep.c:5596 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:267 rcu_read_lock include/linux/rcupdate.h:687 [inline] is_bpf_text_address+0x27/0x270 kernel/bpf/core.c:704 kernel_text_address kernel/extable.c:151 [inline] __kernel_text_address+0x93/0x100 kernel/extable.c:105 unwind_get_return_address+0x48/0x80 arch/x86/kernel/unwind_orc.c:318 arch_stack_walk+0x98/0xe0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x104/0x1e0 kernel/stacktrace.c:121 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x3d/0x70 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0x109/0x150 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:229 [inline] slab_free_hook mm/slub.c:1650 [inline] slab_free_freelist_hook+0x1d8/0x290 mm/slub.c:1675 slab_free mm/slub.c:3235 [inline] kmem_cache_free+0x85/0x170 mm/slub.c:3251 file_free fs/file_table.c:55 [inline] __fput+0x563/0x7b0 fs/file_table.c:298 task_work_run+0x146/0x1c0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x201/0x220 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:302 do_syscall_64+0x4c/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f6d85a4c840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffe55888538 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: fffffffffffffffe RBX: 00007ffe55888840 RCX: 00007f6d85a4c840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000555fbac01cd0 RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000555fbabfc040 R14: 00007ffe55888800 R15: 0000555fbac01af0