loop5: p4 size 2097152 extends beyond EOD, truncated
INFO: task syz-executor.4:26832 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4  D28016 26832  18323 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 fuse_wait_on_page_writeback fs/fuse/file.c:383 [inline]
 fuse_wait_on_page_writeback.isra.0+0x11b/0x170 fs/fuse/file.c:379
 fuse_launder_page fs/fuse/file.c:2033 [inline]
 fuse_launder_page+0xb6/0xe0 fs/fuse/file.c:2026
 do_launder_page mm/truncate.c:655 [inline]
 invalidate_inode_pages2_range+0x795/0x1110 mm/truncate.c:725
 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182
 fuse_open_common+0x254/0x2c0 fs/fuse/file.c:222
overlayfs: workdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
 do_dentry_open+0x4aa/0x1160 fs/open.c:796
9pnet: p9_errstr2errno: server reported unknown error ÿïàÒ’QDŸõîIÆ\
 do_last fs/namei.c:3421 [inline]
 path_openat+0x793/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f00c71f2639
Code: Bad RIP value.
RSP: 002b:00007f00c5744168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f00c7313050 RCX: 00007f00c71f2639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f00c724dae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa0845c5f R14: 00007f00c5744300 R15: 0000000000022000
INFO: task syz-executor.4:26840 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
overlayfs: upper fs does not support tmpfile.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
UDF-fs: error (device loop2): udf_read_tagged: read failed, block=256, location=256
overlayfs: upper fs does not support xattr, falling back to index=off and metacopy=off.
syz-executor.4  D28016 26840  18323 0x00000004
overlayfs: failed to resolve './file0': -2
overlayfs: workdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
MTD: Attempt to mount non-MTD device "/dev/loop3"
Call Trace:
romfs: Mounting image 'rom 5f663c08' through the block layer
9pnet: p9_errstr2errno: server reported unknown error ÿïàÒ’QDŸõîIÆ\
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
overlayfs: failed to resolve './file0': -2
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000)
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline]
 rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618
 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write+0x4f/0x90 kernel/locking/rwsem.c:72
 inode_lock include/linux/fs.h:748 [inline]
 fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421
 filp_close+0xb4/0x160 fs/open.c:1162
 do_dup2+0x233/0x450 fs/file.c:844
 ksys_dup3+0x269/0x3c0 fs/file.c:900
overlayfs: workdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
 __do_sys_dup3 fs/file.c:911 [inline]
 __se_sys_dup3 fs/file.c:909 [inline]
 __x64_sys_dup3+0x6f/0xb0 fs/file.c:909
9pnet: p9_errstr2errno: server reported unknown error ÿïàÒ’QDŸõîIÆ\
overlayfs: lowerdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f00c71f2639
Code: Bad RIP value.
RSP: 002b:00007f00c5702168 EFLAGS: 00000246 ORIG_RAX: 0000000000000124
RAX: ffffffffffffffda RBX: 00007f00c73131f0 RCX: 00007f00c71f2639
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f00c724dae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa0845c5f R14: 00007f00c5702300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by ksoftirqd/1/18:
 #0: 0000000073ef53bf (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline]
 #0: 0000000073ef53bf (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455
3 locks held by kworker/1:0/19:
netlink: 3 bytes leftover after parsing attributes in process `syz-executor.0'.
 #0: 00000000c07c28e2 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 0000000022455089 (key_gc_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 00000000d1a91755 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
 #2: 00000000d1a91755 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667
overlayfs: workdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
9pnet: p9_errstr2errno: server reported unknown error ÿïàÒ’QDŸõîIÆ\
1 lock held by khungtaskd/1571:
 #0: 00000000645a1aa0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by systemd-udevd/4696:
1 lock held by in:imklog/7812:
 #0: 0000000045b583aa (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
3 locks held by rs:main Q:Reg/7813:
 #0: 0000000087414611 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline]
 #0: 0000000087414611 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455
overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
 #1: 00000000645a1aa0 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline]
 #1: 00000000645a1aa0 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857
 #2: 000000005aa2bb51 (&sb->s_type->i_mutex_key#10){++++}, at: inode_trylock include/linux/fs.h:768 [inline]
 #2: 000000005aa2bb51 (&sb->s_type->i_mutex_key#10){++++}, at: ext4_file_write_iter+0x21f/0xf20 fs/ext4/file.c:238
1 lock held by syz-fuzzer/8141:
 #0: 0000000087414611 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9702 [inline]
 #0: 0000000087414611 (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6841
3 locks held by kworker/u4:8/9575:
NILFS (loop2): unable to read secondary superblock (blocksize = 1024)
 #0: 00000000cef43ac5 ((wq_completion)"%s"wiphy_name(local->hw.wiphy)){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000611537f0 ((work_completion)(&sdata->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
 #2: 000000000dadd012 (&wdev->mtx){+.+.}, at: sdata_lock net/mac80211/ieee80211_i.h:977 [inline]
 #2: 000000000dadd012 (&wdev->mtx){+.+.}, at: ieee80211_ibss_rx_queued_mgmt+0xe9/0x18b0 net/mac80211/ibss.c:1623
2 locks held by syz-executor.4/26832:
 #0: 0000000054e5b897 (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline]
 #0: 0000000054e5b897 (sb_writers#16){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360
 #1: 00000000fd5bd25a (&sb->s_type->i_mutex_key#23){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #1: 00000000fd5bd25a (&sb->s_type->i_mutex_key#23){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215
1 lock held by syz-executor.4/26840:
 #0: 00000000fd5bd25a (&sb->s_type->i_mutex_key#23){+.+.}, at: inode_lock include/linux/fs.h:748 [inline]
 #0: 00000000fd5bd25a (&sb->s_type->i_mutex_key#23){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421
NILFS (loop2): couldn't find nilfs on the device
2 locks held by kworker/1:2/28732:
 #0: 0000000050f12fdd ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 0000000003debb11 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
1 lock held by syz-executor.2/30516:
 #0: 00000000f70dc132 (loop_ctl_mutex){+.+.}, at: __loop_clr_fd+0x88/0xe50 drivers/block/loop.c:1080
3 locks held by syz-executor.1/30525:
 #0: 00000000ce985f74 (rtnl_mutex){+.+.}, at: dev_ioctl+0x19d/0xc50 net/core/dev_ioctl.c:487
 #1: 000000000dadd012 (&wdev->mtx){+.+.}, at: wdev_lock net/wireless/core.h:193 [inline]
 #1: 000000000dadd012 (&wdev->mtx){+.+.}, at: cfg80211_leave net/wireless/core.c:1129 [inline]
 #1: 000000000dadd012 (&wdev->mtx){+.+.}, at: cfg80211_netdev_notifier_call+0xca3/0x1aa0 net/wireless/core.c:1229
 #2: 00000000f912c8b6 (&local->sta_mtx){+.+.}, at: __sta_info_flush+0x166/0x540 net/mac80211/sta_info.c:1140
2 locks held by syz-executor.0/30539:
 #0: 0000000087414611 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline]
 #0: 0000000087414611 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455
 #1: 00000000645a1aa0 (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline]
 #1: 00000000645a1aa0 (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4687 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline]
RIP: 0010:write_comp_data+0xf/0x70 kernel/kcov.c:122
Code: 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 c0 df 01 00 <65> 8b 05 7a 59 9f 7e a9 00 01 1f 00 75 4f 8b 86 60 13 00 00 83 f8
RSP: 0018:ffff8880a123fd80 EFLAGS: 00000293
RAX: ffff8880a1236480 RBX: 0000000000000fe0 RCX: ffffffff81a0fa7c
RDX: ffff88809e5a4760 RSI: ffff8880a1236480 RDI: 0000000000000007
RBP: ffff88809e5a5740 R08: 0000000000000001 R09: 0000000000000010
R10: 0000000000000007 R11: 0000000000000000 R12: ffff88809e5a4760
R13: 0000000000000000 R14: ffff88809e5a573f R15: ffffffff8b270eb8
FS:  00007f28df1818c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28dc27f028 CR3: 00000000a128e000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 check_bogus_address mm/usercopy.c:159 [inline]
 __check_object_size mm/usercopy.c:270 [inline]
 __check_object_size+0x6c/0x3e0 mm/usercopy.c:260
 check_object_size include/linux/thread_info.h:132 [inline]
 strncpy_from_user+0x9e/0x350 lib/strncpy_from_user.c:117
 getname_flags+0x113/0x590 fs/namei.c:151
 do_sys_open+0x26c/0x520 fs/open.c:1079
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f28de71085d
Code: 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 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 67 f6 ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffd051d37f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffd051d3b00 RCX: 00007f28de71085d
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055df53e2b460
RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000293 R12: 00000000ffffffff
R13: 000055df53e20040 R14: 00007ffd051d3ac0 R15: 000055df53e2e4f0
netlink: 3 bytes leftover after parsing attributes in process `syz-executor.0'.