random: crng init done
audit: type=1400 audit(1546186325.957:5): avc:  denied  { associate } for  pid=2067 comm="syz-executor2" name="syz2" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:51
in_atomic(): 1, irqs_disabled(): 0, pid: 3298, name: blkid
1 lock held by blkid/3298:
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] spin_lock include/linux/spinlock.h:302 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] zap_pte_range mm/memory.c:1116 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] zap_pmd_range mm/memory.c:1249 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] zap_pud_range mm/memory.c:1270 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] unmap_page_range+0x6f0/0x1680 mm/memory.c:1291
Preemption disabled at:[   34.411433] [<ffffffff814996b0>] spin_lock include/linux/spinlock.h:302 [inline]
Preemption disabled at:[   34.411433] [<ffffffff814996b0>] zap_pte_range mm/memory.c:1116 [inline]
Preemption disabled at:[   34.411433] [<ffffffff814996b0>] zap_pmd_range mm/memory.c:1249 [inline]
Preemption disabled at:[   34.411433] [<ffffffff814996b0>] zap_pud_range mm/memory.c:1270 [inline]
Preemption disabled at:[   34.411433] [<ffffffff814996b0>] unmap_page_range+0x6f0/0x1680 mm/memory.c:1291
CPU: 0 PID: 3298 Comm: blkid Not tainted 4.9.148+ #87
 ffff8801db607a20 ffffffff81b43d59 ffffffff814996b0 0000000000000000
 0000000000000101 ffff8801d1904740 ffff8801d1904740 ffff8801db607a58
 ffffffff813fa4dd ffff8801d1904740 ffffffff82a4fe80 0000000000000033
Call Trace:
 <IRQ> [   34.452375]  [<ffffffff81b43d59>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [   34.452375]  [<ffffffff81b43d59>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813fa4dd>] ___might_sleep.cold.31+0x18a/0x1fc kernel/sched/core.c:7988
 [<ffffffff81167cf5>] __might_sleep+0x95/0x1a0 kernel/sched/core.c:7945
 [<ffffffff828144b1>] down_write+0x21/0xa0 kernel/locking/rwsem.c:51
 [<ffffffff8158c141>] inode_lock include/linux/fs.h:768 [inline]
 [<ffffffff8158c141>] __generic_file_fsync+0xc1/0x1a0 fs/libfs.c:978
 [<ffffffff816b5d19>] ext4_sync_file+0x659/0x10a0 fs/ext4/fsync.c:116
 [<ffffffff815b226c>] vfs_fsync_range+0x10c/0x260 fs/sync.c:195
 [<ffffffff815cdf42>] generic_write_sync include/linux/fs.h:2609 [inline]
 [<ffffffff815cdf42>] dio_complete+0x522/0x6d0 fs/direct-io.c:282
 [<ffffffff815ce20c>] dio_bio_end_aio+0x11c/0x370 fs/direct-io.c:323
 [<ffffffff81ab6ce5>] bio_endio+0x1a5/0x1f0 block/bio.c:1781
 [<ffffffff81ad7348>] req_bio_endio block/blk-core.c:157 [inline]
 [<ffffffff81ad7348>] blk_update_request+0x248/0x9b0 block/blk-core.c:2628
 [<ffffffff81e1d93d>] scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606
 [<ffffffff81e26943>] scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829
 [<ffffffff81e0986a>] scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607
 [<ffffffff81e24e70>] scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567
 [<ffffffff81af520d>] blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35
 [<ffffffff8281f95e>] __do_softirq+0x20e/0x964 kernel/softirq.c:288
 [<ffffffff810efe3c>] invoke_softirq kernel/softirq.c:368 [inline]
 [<ffffffff810efe3c>] irq_exit+0x11c/0x150 kernel/softirq.c:409
 [<ffffffff8281c95d>] exiting_irq arch/x86/include/asm/apic.h:669 [inline]
 [<ffffffff8281c95d>] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252
 [<ffffffff8281af5d>] common_interrupt+0x9d/0x9d arch/x86/entry/entry_64.S:461
 <EOI> [   34.653547]  [<ffffffff81499d3b>] ? constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
 <EOI> [   34.653547]  [<ffffffff81499d3b>] ? PageSlab include/linux/page-flags.h:265 [inline]
 <EOI> [   34.653547]  [<ffffffff81499d3b>] ? page_mapcount include/linux/mm.h:533 [inline]
 <EOI> [   34.653547]  [<ffffffff81499d3b>] ? zap_pte_range mm/memory.c:1163 [inline]
 <EOI> [   34.653547]  [<ffffffff81499d3b>] ? zap_pmd_range mm/memory.c:1249 [inline]
 <EOI> [   34.653547]  [<ffffffff81499d3b>] ? zap_pud_range mm/memory.c:1270 [inline]
 <EOI> [   34.653547]  [<ffffffff81499d3b>] ? unmap_page_range+0xd7b/0x1680 mm/memory.c:1291
 [<ffffffff81499d3b>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
 [<ffffffff81499d3b>] PageSlab include/linux/page-flags.h:265 [inline]
 [<ffffffff81499d3b>] page_mapcount include/linux/mm.h:533 [inline]
 [<ffffffff81499d3b>] zap_pte_range mm/memory.c:1163 [inline]
 [<ffffffff81499d3b>] zap_pmd_range mm/memory.c:1249 [inline]
 [<ffffffff81499d3b>] zap_pud_range mm/memory.c:1270 [inline]
 [<ffffffff81499d3b>] unmap_page_range+0xd7b/0x1680 mm/memory.c:1291
 [<ffffffff8149a75c>] unmap_single_vma+0x11c/0x170 mm/memory.c:1336
 [<ffffffff8149ae61>] unmap_vmas+0x81/0xd0 mm/memory.c:1366
 [<ffffffff814b0f3c>] exit_mmap+0x1cc/0x3a0 mm/mmap.c:3021
 [<ffffffff810d26dd>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff810d26dd>] mmput+0xcd/0x360 kernel/fork.c:906
 [<ffffffff810e6c09>] exit_mm kernel/exit.c:514 [inline]
 [<ffffffff810e6c09>] do_exit+0x6c9/0x2a50 kernel/exit.c:820
 [<ffffffff810ed421>] do_group_exit+0x111/0x300 kernel/exit.c:937
 [<ffffffff810ed62d>] SYSC_exit_group kernel/exit.c:948 [inline]
 [<ffffffff810ed62d>] SyS_exit_group+0x1d/0x20 kernel/exit.c:946
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff8281a653>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

=================================
[ INFO: inconsistent lock state ]
4.9.148+ #87 Tainted: G        W      
---------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
blkid/3298 [HC0[0]:SC1[1]:HE1:SE0] takes:
 (&sb->s_type->i_mutex_key#9){+.?.+.}, at: [<ffffffff8158c141>] inode_lock include/linux/fs.h:768 [inline]
 (&sb->s_type->i_mutex_key#9){+.?.+.}, at: [<ffffffff8158c141>] __generic_file_fsync+0xc1/0x1a0 fs/libfs.c:978
  mark_irqflags kernel/locking/lockdep.c:2941 [inline]
  __lock_acquire+0xbdd/0x4a10 kernel/locking/lockdep.c:3302
  lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756
  down_write+0x41/0xa0 kernel/locking/rwsem.c:52
  inode_lock include/linux/fs.h:768 [inline]
  bprm_fill_uid fs/exec.c:1506 [inline]
  prepare_binprm+0x2b7/0x750 fs/exec.c:1540
  do_execveat_common.isra.14+0xe9f/0x1ed0 fs/exec.c:1766
  do_execve fs/exec.c:1829 [inline]
  SYSC_execve fs/exec.c:1910 [inline]
  SyS_execve+0x42/0x50 fs/exec.c:1905
  do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
  entry_SYSCALL_64_after_swapgs+0x5d/0xdb
irq event stamp: 3084
hardirqs last  enabled at (3084): [<ffffffff8281afe6>] restore_regs_and_iret+0x0/0x1d
hardirqs last disabled at (3083): [<ffffffff8281bde8>] apic_timer_interrupt+0x98/0xb0 arch/x86/entry/entry_64.S:648
softirqs last  enabled at (2026): [<ffffffff8281fbbd>] __do_softirq+0x46d/0x964 kernel/softirq.c:314
softirqs last disabled at (3039): [<ffffffff810efe3c>] invoke_softirq kernel/softirq.c:368 [inline]
softirqs last disabled at (3039): [<ffffffff810efe3c>] irq_exit+0x11c/0x150 kernel/softirq.c:409

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&sb->s_type->i_mutex_key#9);
  <Interrupt>
    lock(&sb->s_type->i_mutex_key#9);

 *** DEADLOCK ***

1 lock held by blkid/3298:
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] spin_lock include/linux/spinlock.h:302 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] zap_pte_range mm/memory.c:1116 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] zap_pmd_range mm/memory.c:1249 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] zap_pud_range mm/memory.c:1270 [inline]
 #0:  (&(ptlock_ptr(page))->rlock#2){+.+...}, at: [<ffffffff814996b0>] unmap_page_range+0x6f0/0x1680 mm/memory.c:1291

stack backtrace:
CPU: 0 PID: 3298 Comm: blkid Tainted: G        W       4.9.148+ #87
 ffff8801db607790 ffffffff81b43d59 ffff8801d1904740 ffffffff83cb20f0
 ffff8801d1905018 ffff8801d1905038 ffffffff8424ad80 ffff8801db607808
 ffffffff81400d8e 0000000000000001 ffffffff00000001 0000000000000000
Call Trace:
 <IRQ> [   34.973360]  [<ffffffff81b43d59>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [   34.973360]  [<ffffffff81b43d59>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81400d8e>] print_usage_bug.cold.40+0x44e/0x57e kernel/locking/lockdep.c:2387
 [<ffffffff81205e82>] valid_state kernel/locking/lockdep.c:2400 [inline]
 [<ffffffff81205e82>] mark_lock_irq kernel/locking/lockdep.c:2602 [inline]
 [<ffffffff81205e82>] mark_lock+0x2f2/0x1290 kernel/locking/lockdep.c:3065
 [<ffffffff81208574>] mark_irqflags kernel/locking/lockdep.c:2923 [inline]
 [<ffffffff81208574>] __lock_acquire+0x1084/0x4a10 kernel/locking/lockdep.c:3302
 [<ffffffff8120ca10>] lock_acquire+0x130/0x3e0 kernel/locking/lockdep.c:3756
 [<ffffffff828144d1>] down_write+0x41/0xa0 kernel/locking/rwsem.c:52
 [<ffffffff8158c141>] inode_lock include/linux/fs.h:768 [inline]
 [<ffffffff8158c141>] __generic_file_fsync+0xc1/0x1a0 fs/libfs.c:978
 [<ffffffff816b5d19>] ext4_sync_file+0x659/0x10a0 fs/ext4/fsync.c:116
 [<ffffffff815b226c>] vfs_fsync_range+0x10c/0x260 fs/sync.c:195
 [<ffffffff815cdf42>] generic_write_sync include/linux/fs.h:2609 [inline]
 [<ffffffff815cdf42>] dio_complete+0x522/0x6d0 fs/direct-io.c:282
 [<ffffffff815ce20c>] dio_bio_end_aio+0x11c/0x370 fs/direct-io.c:323
 [<ffffffff81ab6ce5>] bio_endio+0x1a5/0x1f0 block/bio.c:1781
 [<ffffffff81ad7348>] req_bio_endio block/blk-core.c:157 [inline]
 [<ffffffff81ad7348>] blk_update_request+0x248/0x9b0 block/blk-core.c:2628
 [<ffffffff81e1d93d>] scsi_end_request+0x9d/0x5c0 drivers/scsi/scsi_lib.c:606
 [<ffffffff81e26943>] scsi_io_completion+0x273/0x17a0 drivers/scsi/scsi_lib.c:829
 [<ffffffff81e0986a>] scsi_finish_command+0x3ba/0x530 drivers/scsi/scsi.c:607
 [<ffffffff81e24e70>] scsi_softirq_done+0x250/0x360 drivers/scsi/scsi_lib.c:1567
 [<ffffffff81af520d>] blk_done_softirq+0x27d/0x3e0 block/blk-softirq.c:35
 [<ffffffff8281f95e>] __do_softirq+0x20e/0x964 kernel/softirq.c:288
 [<ffffffff810efe3c>] invoke_softirq kernel/softirq.c:368 [inline]
 [<ffffffff810efe3c>] irq_exit+0x11c/0x150 kernel/softirq.c:409
 [<ffffffff8281c95d>] exiting_irq arch/x86/include/asm/apic.h:669 [inline]
 [<ffffffff8281c95d>] do_IRQ+0x10d/0x1c0 arch/x86/kernel/irq.c:252
 [<ffffffff8281af5d>] common_interrupt+0x9d/0x9d arch/x86/entry/entry_64.S:461
 <EOI> [   35.240804]  [<ffffffff81499d3b>] ? constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
 <EOI> [   35.240804]  [<ffffffff81499d3b>] ? PageSlab include/linux/page-flags.h:265 [inline]
 <EOI> [   35.240804]  [<ffffffff81499d3b>] ? page_mapcount include/linux/mm.h:533 [inline]
 <EOI> [   35.240804]  [<ffffffff81499d3b>] ? zap_pte_range mm/memory.c:1163 [inline]
 <EOI> [   35.240804]  [<ffffffff81499d3b>] ? zap_pmd_range mm/memory.c:1249 [inline]
 <EOI> [   35.240804]  [<ffffffff81499d3b>] ? zap_pud_range mm/memory.c:1270 [inline]
 <EOI> [   35.240804]  [<ffffffff81499d3b>] ? unmap_page_range+0xd7b/0x1680 mm/memory.c:1291
 [<ffffffff81499d3b>] constant_test_bit arch/x86/include/asm/bitops.h:311 [inline]
 [<ffffffff81499d3b>] PageSlab include/linux/page-flags.h:265 [inline]
 [<ffffffff81499d3b>] page_mapcount include/linux/mm.h:533 [inline]
 [<ffffffff81499d3b>] zap_pte_range mm/memory.c:1163 [inline]
 [<ffffffff81499d3b>] zap_pmd_range mm/memory.c:1249 [inline]
 [<ffffffff81499d3b>] zap_pud_range mm/memory.c:1270 [inline]
 [<ffffffff81499d3b>] unmap_page_range+0xd7b/0x1680 mm/memory.c:1291
 [<ffffffff8149a75c>] unmap_single_vma+0x11c/0x170 mm/memory.c:1336
 [<ffffffff8149ae61>] unmap_vmas+0x81/0xd0 mm/memory.c:1366
 [<ffffffff814b0f3c>] exit_mmap+0x1cc/0x3a0 mm/mmap.c:3021
 [<ffffffff810d26dd>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff810d26dd>] mmput+0xcd/0x360 kernel/fork.c:906
 [<ffffffff810e6c09>] exit_mm kernel/exit.c:514 [inline]
 [<ffffffff810e6c09>] do_exit+0x6c9/0x2a50 kernel/exit.c:820
 [<ffffffff810ed421>] do_group_exit+0x111/0x300 kernel/exit.c:937
 [<ffffffff810ed62d>] SYSC_exit_group kernel/exit.c:948 [inline]
 [<ffffffff810ed62d>] SyS_exit_group+0x1d/0x20 kernel/exit.c:946
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff8281a653>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
BUG: scheduling while atomic: blkid/3298/0x00000102
INFO: lockdep is turned off.
Modules linked in:
Preemption disabled at:[   35.368341] [<ffffffff814996b0>] spin_lock include/linux/spinlock.h:302 [inline]
Preemption disabled at:[   35.368341] [<ffffffff814996b0>] zap_pte_range mm/memory.c:1116 [inline]
Preemption disabled at:[   35.368341] [<ffffffff814996b0>] zap_pmd_range mm/memory.c:1249 [inline]
Preemption disabled at:[   35.368341] [<ffffffff814996b0>] zap_pud_range mm/memory.c:1270 [inline]
Preemption disabled at:[   35.368341] [<ffffffff814996b0>] unmap_page_range+0x6f0/0x1680 mm/memory.c:1291