====================================================== WARNING: possible circular locking dependency detected 4.14.0-rc2-next-20170929+ #32 Not tainted ------------------------------------------------------ loop0/5121 is trying to acquire lock: (&sb->s_type->i_mutex_key#9){++++}, at: [] inode_lock include/linux/fs.h:712 [inline] (&sb->s_type->i_mutex_key#9){++++}, at: [] shmem_fallocate+0x161/0x1160 mm/shmem.c:2841 but now in release context of a crosslock acquired at the following: ((complete)&ret.event){+.+.}, at: [] submit_bio_wait+0x15e/0x200 block/bio.c:953 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 ((complete)&ret.event){+.+.}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x328f/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 complete_acquire include/linux/completion.h:39 [inline] __wait_for_common kernel/sched/completion.c:108 [inline] wait_for_common_io kernel/sched/completion.c:128 [inline] wait_for_completion_io+0xcb/0x7b0 kernel/sched/completion.c:176 submit_bio_wait+0x15e/0x200 block/bio.c:953 blkdev_issue_zeroout+0x13c/0x1d0 block/blk-lib.c:370 sb_issue_zeroout include/linux/blkdev.h:1368 [inline] ext4_init_inode_table+0x4fd/0xdb1 fs/ext4/ialloc.c:1447 ext4_run_li_request fs/ext4/super.c:2868 [inline] ext4_lazyinit_thread+0x808/0xd30 fs/ext4/super.c:2962 kthread+0x3c9/0x4b0 kernel/kthread.c:242 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 -> #3 (&meta_group_info[i]->alloc_sem){++++}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x328f/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 down_read+0x96/0x150 kernel/locking/rwsem.c:23 __ext4_new_inode+0x26dc/0x4f00 fs/ext4/ialloc.c:1056 ext4_symlink+0x2d9/0xae0 fs/ext4/namei.c:3118 vfs_symlink+0x323/0x560 fs/namei.c:4115 SYSC_symlinkat fs/namei.c:4142 [inline] SyS_symlinkat fs/namei.c:4122 [inline] SYSC_symlink fs/namei.c:4155 [inline] SyS_symlink+0x134/0x200 fs/namei.c:4153 entry_SYSCALL_64_fastpath+0x1f/0xbe -> #2 (jbd2_handle){++++}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x328f/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 start_this_handle+0x4b8/0x1080 fs/jbd2/transaction.c:390 jbd2__journal_start+0x389/0x9f0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x15f/0x550 fs/ext4/ext4_jbd2.c:80 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_dirty_inode+0x56/0xa0 fs/ext4/inode.c:5859 __mark_inode_dirty+0x912/0x1170 fs/fs-writeback.c:2096 generic_update_time+0x1b2/0x270 fs/inode.c:1649 update_time fs/inode.c:1665 [inline] touch_atime+0x26d/0x2f0 fs/inode.c:1737 file_accessed include/linux/fs.h:2061 [inline] ext4_file_mmap+0x161/0x1b0 fs/ext4/file.c:352 call_mmap include/linux/fs.h:1775 [inline] mmap_region+0xa99/0x15a0 mm/mmap.c:1690 do_mmap+0x6a1/0xd50 mm/mmap.c:1468 do_mmap_pgoff include/linux/mm.h:2150 [inline] vm_mmap_pgoff+0x1de/0x280 mm/util.c:333 SYSC_mmap_pgoff mm/mmap.c:1518 [inline] SyS_mmap_pgoff+0x462/0x5f0 mm/mmap.c:1476 SYSC_mmap arch/x86/kernel/sys_x86_64.c:99 [inline] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:90 entry_SYSCALL_64_fastpath+0x1f/0xbe -> #1 (&mm->mmap_sem){++++}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x328f/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 __might_fault+0x13a/0x1d0 mm/memory.c:4522 _copy_to_user+0x2c/0xc0 lib/usercopy.c:24 copy_to_user include/linux/uaccess.h:154 [inline] filldir+0x1a7/0x320 fs/readdir.c:196 dir_emit_dot include/linux/fs.h:3341 [inline] dir_emit_dots include/linux/fs.h:3352 [inline] dcache_readdir+0x12d/0x5e0 fs/libfs.c:193 iterate_dir+0x4b2/0x5d0 fs/readdir.c:51 SYSC_getdents fs/readdir.c:231 [inline] SyS_getdents+0x225/0x450 fs/readdir.c:212 entry_SYSCALL_64_fastpath+0x1f/0xbe -> #0 (&sb->s_type->i_mutex_key#9){++++}: down_write+0x87/0x120 kernel/locking/rwsem.c:53 inode_lock include/linux/fs.h:712 [inline] shmem_fallocate+0x161/0x1160 mm/shmem.c:2841 lo_discard drivers/block/loop.c:434 [inline] do_req_filebacked drivers/block/loop.c:575 [inline] loop_handle_cmd drivers/block/loop.c:1718 [inline] loop_queue_work+0x46f/0x3900 drivers/block/loop.c:1732 kthread_worker_fn+0x32b/0x980 kernel/kthread.c:646 loop_kthread_worker_fn+0x51/0x60 drivers/block/loop.c:841 other info that might help us debug this: Chain exists of: &sb->s_type->i_mutex_key#9 --> &meta_group_info[i]->alloc_sem --> (complete)&ret.event Possible unsafe locking scenario by crosslock: CPU0 CPU1 ---- ---- lock(&meta_group_info[i]->alloc_sem); lock((complete)&ret.event); lock(&sb->s_type->i_mutex_key#9); unlock((complete)&ret.event); *** DEADLOCK *** 1 lock held by loop0/5121: #0: (&x->wait#14){..-.}, at: [] complete+0x18/0x80 kernel/sched/completion.c:34 stack backtrace: CPU: 1 PID: 5121 Comm: loop0 Not tainted 4.14.0-rc2-next-20170929+ #32 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 print_circular_bug+0x503/0x710 kernel/locking/lockdep.c:1259 check_prev_add+0x865/0x1520 kernel/locking/lockdep.c:1894 commit_xhlock kernel/locking/lockdep.c:5015 [inline] commit_xhlocks kernel/locking/lockdep.c:5059 [inline] lock_commit_crosslock+0xe59/0x1d00 kernel/locking/lockdep.c:5098 complete_release_commit include/linux/completion.h:49 [inline] complete+0x24/0x80 kernel/sched/completion.c:39 submit_bio_wait_endio+0x9c/0xd0 block/bio.c:930 bio_endio+0x2f8/0x8d0 block/bio.c:1843 req_bio_endio block/blk-core.c:204 [inline] blk_update_request+0x2a6/0xe20 block/blk-core.c:2746 blk_mq_end_request+0x54/0x120 block/blk-mq.c:509 lo_complete_rq+0xbe/0x1f0 drivers/block/loop.c:463 __blk_mq_complete_request+0x38f/0x6c0 block/blk-mq.c:550 blk_mq_complete_request+0x4f/0x60 block/blk-mq.c:570 loop_handle_cmd drivers/block/loop.c:1723 [inline] loop_queue_work+0x26b/0x3900 drivers/block/loop.c:1732 kthread_worker_fn+0x32b/0x980 kernel/kthread.c:646 loop_kthread_worker_fn+0x51/0x60 drivers/block/loop.c:841 kthread+0x3c9/0x4b0 kernel/kthread.c:242 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 audit: type=1326 audit(1506917502.834:59): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6971 comm="syz-executor2" exe="/root/syz-executor2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x4520a9 code=0xffff0000 PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex audit: type=1326 audit(1506917502.928:60): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6971 comm="syz-executor2" exe="/root/syz-executor2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x4520a9 code=0xffff0000 PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex RDS: rds_bind could not find a transport for 0.0.0.1, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for 0.0.0.1, load rds_tcp or rds_rdma? device gre0 entered promiscuous mode netlink: 6 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=9203 sclass=netlink_route_socket pig=7250 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=9203 sclass=netlink_route_socket pig=7259 comm=syz-executor1 tc_dump_action: action bad kind QAT: Invalid ioctl tc_dump_action: action bad kind QAT: Invalid ioctl mmap: syz-executor0 (7313): VmData 1884160 exceed data ulimit 1. Update limits or use boot option ignore_rlimit_data. device lo entered promiscuous mode nla_parse: 3 callbacks suppressed netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. QAT: Invalid ioctl QAT: Invalid ioctl netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. rfkill: input handler disabled skbuff: bad partial csum: csum=53081/14726 len=2273 skbuff: bad partial csum: csum=53081/14726 len=2273 netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. rfkill: input handler enabled netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. print_req_error: I/O error, dev loop3, sector 0 Buffer I/O error on dev loop3, logical block 0, lost async page write print_req_error: I/O error, dev loop3, sector 8 Buffer I/O error on dev loop3, logical block 1, lost async page write print_req_error: I/O error, dev loop3, sector 16 Buffer I/O error on dev loop3, logical block 2, lost async page write print_req_error: I/O error, dev loop3, sector 24 Buffer I/O error on dev loop3, logical block 3, lost async page write print_req_error: I/O error, dev loop3, sector 32 Buffer I/O error on dev loop3, logical block 4, lost async page write print_req_error: I/O error, dev loop3, sector 40 Buffer I/O error on dev loop3, logical block 5, lost async page write print_req_error: I/O error, dev loop3, sector 48 Buffer I/O error on dev loop3, logical block 6, lost async page write print_req_error: I/O error, dev loop3, sector 56 Buffer I/O error on dev loop3, logical block 7, lost async page write print_req_error: I/O error, dev loop3, sector 64 Buffer I/O error on dev loop3, logical block 8, lost async page write print_req_error: I/O error, dev loop3, sector 72 Buffer I/O error on dev loop3, logical block 9, lost async page write audit: type=1326 audit(1506917506.307:61): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7803 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x4520a9 code=0xffff0000 audit: type=1326 audit(1506917506.382:62): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7803 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x4520a9 code=0xffff0000 rfkill: input handler disabled rfkill: input handler enabled netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. device syz1 entered promiscuous mode device syz1 left promiscuous mode device syz1 entered promiscuous mode program syz-executor1 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 program syz-executor1 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 program syz-executor1 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor1 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=8227 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=8243 comm=syz-executor3 audit: type=1326 audit(1506917508.630:63): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=8429 comm="syz-executor6" exe="/root/syz-executor6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x4520a9 code=0x0 audit: type=1326 audit(1506917508.693:64): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=8429 comm="syz-executor6" exe="/root/syz-executor6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x4520a9 code=0x0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 8529 Comm: syz-executor0 Not tainted 4.14.0-rc2-next-20170929+ #32 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:426 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3560 ptlock_alloc+0x24/0x70 mm/memory.c:4679 ptlock_init include/linux/mm.h:1729 [inline] pgtable_page_ctor include/linux/mm.h:1763 [inline] pte_alloc_one+0x59/0x100 arch/x86/mm/pgtable.c:31 __do_huge_pmd_anonymous_page mm/huge_memory.c:564 [inline] do_huge_pmd_anonymous_page+0x554/0x1b00 mm/huge_memory.c:728 create_huge_pmd mm/memory.c:3822 [inline] __handle_mm_fault+0x1827/0x39c0 mm/memory.c:4025 handle_mm_fault+0x334/0x8d0 mm/memory.c:4091 __do_page_fault+0x5bd/0xd60 arch/x86/mm/fault.c:1444 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1520 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1066 RIP: 0010:__put_user_8+0x1c/0x25 arch/x86/lib/putuser.S:80 RSP: 0018:ffff8801c8cafc78 EFLAGS: 00010293 RAX: 0000000000000001 RBX: 00007fffffffeff9 RCX: 0000000020481000 RDX: 1ffff10038bd5d62 RSI: ffffffff81978448 RDI: ffff8801c5eaeb10 RBP: ffff8801c8cafca0 R08: ffff8801db21f500 R09: 1ffff10039195f64 R10: ffff8801c614c380 R11: 1ffff1003b643ea4 R12: 0000000000000008 R13: ffff8801c5eaeb00 R14: 0000000020481000 R15: 0000000000000004 do_msgrcv+0x829/0x12c0 ipc/msg.c:1123 SYSC_msgrcv ipc/msg.c:1132 [inline] SyS_msgrcv+0x3b/0x50 ipc/msg.c:1129 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4520a9 RSP: 002b:00007f1423efac08 EFLAGS: 00000216 ORIG_RAX: 0000000000000046 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004520a9 RDX: 0000000000000008 RSI: 0000000020481000 RDI: 0000000000000000 RBP: 00007f1423efaa10 R08: 0000000000000000 R09: 0000000000000000 R10: fffffffffffffffd R11: 0000000000000216 R12: 00000000004b6c37 R13: 00007f1423efab48 R14: 00000000004b6c47 R15: 0000000000000000 netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. CPU: 0 PID: 8638 Comm: syz-executor2 Not tainted 4.14.0-rc2-next-20170929+ #32 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:426 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3560 ptlock_alloc+0x24/0x70 mm/memory.c:4679 ptlock_init include/linux/mm.h:1729 [inline] pgtable_page_ctor include/linux/mm.h:1763 [inline] pte_alloc_one+0x59/0x100 arch/x86/mm/pgtable.c:31 __do_huge_pmd_anonymous_page mm/huge_memory.c:564 [inline] do_huge_pmd_anonymous_page+0x554/0x1b00 mm/huge_memory.c:728 create_huge_pmd mm/memory.c:3822 [inline] __handle_mm_fault+0x1827/0x39c0 mm/memory.c:4025 handle_mm_fault+0x334/0x8d0 mm/memory.c:4091 __do_page_fault+0x5bd/0xd60 arch/x86/mm/fault.c:1444 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1520 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1066 RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66 RSP: 0018:ffff8801c4adfb48 EFLAGS: 00010202 RAX: ffffed003895bf8d RBX: 0000000000000008 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff8801c4adfc60 RDI: 000000002037b000 RBP: ffff8801c4adfb78 R08: 0000000000000000 R09: ffffed003895bf8d R10: 0000000000000001 R11: ffffed003895bf8c R12: 000000002037b000 R13: ffff8801c4adfc60 R14: 00007ffffffff000 R15: 000000002037b008 copy_to_user include/linux/uaccess.h:154 [inline] perf_read_one kernel/events/core.c:4529 [inline] __perf_read kernel/events/core.c:4572 [inline] perf_read+0x63f/0x970 kernel/events/core.c:4585 __vfs_read+0xef/0xa00 fs/read_write.c:410 vfs_read+0x124/0x360 fs/read_write.c:446 SYSC_read fs/read_write.c:572 [inline] SyS_read+0xef/0x220 fs/read_write.c:565 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4520a9 RSP: 002b:00007f9679a69c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004520a9 RDX: 0000000000000008 RSI: 000000002037b000 RDI: 0000000000000005 RBP: 00007f9679a69a10 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b6c37 R13: 00007f9679a69b48 R14: 00000000004b6c47 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8680 Comm: syz-executor2 Not tainted 4.14.0-rc2-next-20170929+ #32 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:31 slab_pre_alloc_hook mm/slab.h:426 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3560 ptlock_alloc+0x24/0x70 mm/memory.c:4679 ptlock_init include/linux/mm.h:1729 [inline] pgtable_page_ctor include/linux/mm.h:1763 [inline] pte_alloc_one+0x59/0x100 arch/x86/mm/pgtable.c:31 __do_huge_pmd_anonymous_page mm/huge_memory.c:564 [inline] do_huge_pmd_anonymous_page+0x554/0x1b00 mm/huge_memory.c:728 create_huge_pmd mm/memory.c:3822 [inline] __handle_mm_fault+0x1827/0x39c0 mm/memory.c:4025 handle_mm_fault+0x334/0x8d0 mm/memory.c:4091 __do_page_fault+0x5bd/0xd60 arch/x86/mm/fault.c:1444 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1520 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1066 RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66 RSP: 0018:ffff8801cf547b48 EFLAGS: 00010202 RAX: ffffed0039ea8f8d RBX: 0000000000000008 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff8801cf547c60 RDI: 000000002037b000 RBP: ffff8801cf547b78 R08: 0000000000000000 R09: ffffed0039ea8f8d R10: 0000000000000001 R11: ffffed0039ea8f8c R12: 000000002037b000 R13: ffff8801cf547c60 R14: 00007ffffffff000 R15: 000000002037b008 copy_to_user include/linux/uaccess.h:154 [inline] perf_read_one kernel/events/core.c:4529 [inline] __perf_read kernel/events/core.c:4572 [inline] perf_read+0x63f/0x970 kernel/events/core.c:4585 __vfs_read+0xef/0xa00 fs/read_write.c:410 vfs_read+0x124/0x360 fs/read_write.c:446 SYSC_read fs/read_write.c:572 [inline] SyS_read+0xef/0x220 fs/read_write.c:565 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4520a9 RSP: 002b:00007f9679a69c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004520a9 RDX: 0000000000000008 RSI: 000000002037b000 RDI: 0000000000000005 RBP: 00007f9679a69a10 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b6c37 R13: 00007f9679a69b48 R14: 00000000004b6c47 R15: 0000000000000000 QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl nla_parse: 1 callbacks suppressed netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. device syz1 left promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'.