Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   45.078093][ T3961] loop0: detected capacity change from 0 to 512
[   45.081094][ T3961] =======================================================
[   45.081094][ T3961] WARNING: The mand mount option has been deprecated and
[   45.081094][ T3961]          and is ignored by this kernel. Remove the mand
[   45.081094][ T3961]          option from the mount to silence this warning.
[   45.081094][ T3961] =======================================================
[   45.092963][ T3961] EXT4-fs (loop0): orphan cleanup on readonly fs
[   45.095294][ T3961] EXT4-fs warning (device loop0): ext4_enable_quotas:6397: Failed to enable quota tracking (type=2, err=-22, ino=15). Please run e2fsck to fix.
[   45.137301][ T3961] EXT4-fs (loop0): Cannot turn on quotas: error -22
[   45.141391][ T3961] EXT4-fs (loop0): 1 truncate cleaned up
[   45.142546][ T3961] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback.
[   45.147306][ T3961] 
[   45.147819][ T3961] ======================================================
[   45.149148][ T3961] WARNING: possible circular locking dependency detected
[   45.150644][ T3961] 5.15.111-syzkaller #0 Not tainted
[   45.151676][ T3961] ------------------------------------------------------
[   45.153152][ T3961] syz-executor920/3961 is trying to acquire lock:
[   45.154578][ T3961] ffff0000d3d8c460 (sb_writers#3){.+.+}-{0:0}, at: ext4_multi_mount_protect+0x2e0/0x894
[   45.156553][ T3961] 
[   45.156553][ T3961] but task is already holding lock:
[   45.158184][ T3961] ffff0000d3d8c0e0 (&type->s_umount_key#30){++++}-{3:3}, at: __arm64_sys_fsconfig+0xa14/0xd18
[   45.160311][ T3961] 
[   45.160311][ T3961] which lock already depends on the new lock.
[   45.160311][ T3961] 
[   45.162418][ T3961] 
[   45.162418][ T3961] the existing dependency chain (in reverse order) is:
[   45.164291][ T3961] 
[   45.164291][ T3961] -> #1 (&type->s_umount_key#30){++++}-{3:3}:
[   45.166105][ T3961]        down_write+0x110/0x260
[   45.167138][ T3961]        __arm64_sys_quotactl_fd+0x2fc/0x4a4
[   45.168429][ T3961]        invoke_syscall+0x98/0x2b8
[   45.169439][ T3961]        el0_svc_common+0x138/0x258
[   45.170586][ T3961]        do_el0_svc+0x58/0x14c
[   45.171551][ T3961]        el0_svc+0x7c/0x1f0
[   45.172496][ T3961]        el0t_64_sync_handler+0x84/0xe4
[   45.173708][ T3961]        el0t_64_sync+0x1a0/0x1a4
[   45.174761][ T3961] 
[   45.174761][ T3961] -> #0 (sb_writers#3){.+.+}-{0:0}:
[   45.176446][ T3961]        __lock_acquire+0x32cc/0x7620
[   45.177607][ T3961]        lock_acquire+0x240/0x77c
[   45.178664][ T3961]        write_mmp_block+0x170/0xd18
[   45.179831][ T3961]        ext4_multi_mount_protect+0x2e0/0x894
[   45.181071][ T3961]        ext4_remount+0x1fc8/0x2710
[   45.182148][ T3961]        legacy_reconfigure+0xfc/0x114
[   45.183313][ T3961]        reconfigure_super+0x340/0x690
[   45.184418][ T3961]        __arm64_sys_fsconfig+0xa1c/0xd18
[   45.185635][ T3961]        invoke_syscall+0x98/0x2b8
[   45.186756][ T3961]        el0_svc_common+0x138/0x258
[   45.187876][ T3961]        do_el0_svc+0x58/0x14c
[   45.188892][ T3961]        el0_svc+0x7c/0x1f0
[   45.189858][ T3961]        el0t_64_sync_handler+0x84/0xe4
[   45.191084][ T3961]        el0t_64_sync+0x1a0/0x1a4
[   45.192087][ T3961] 
[   45.192087][ T3961] other info that might help us debug this:
[   45.192087][ T3961] 
[   45.194255][ T3961]  Possible unsafe locking scenario:
[   45.194255][ T3961] 
[   45.195797][ T3961]        CPU0                    CPU1
[   45.196986][ T3961]        ----                    ----
[   45.198083][ T3961]   lock(&type->s_umount_key#30);
[   45.199152][ T3961]                                lock(sb_writers#3);
[   45.200563][ T3961]                                lock(&type->s_umount_key#30);
[   45.202076][ T3961]   lock(sb_writers#3);
[   45.202950][ T3961] 
[   45.202950][ T3961]  *** DEADLOCK ***
[   45.202950][ T3961] 
[   45.204716][ T3961] 2 locks held by syz-executor920/3961:
[   45.205946][ T3961]  #0: ffff0000ccd96870 (&fc->uapi_mutex){+.+.}-{3:3}, at: __arm64_sys_fsconfig+0x720/0xd18
[   45.208025][ T3961]  #1: ffff0000d3d8c0e0 (&type->s_umount_key#30){++++}-{3:3}, at: __arm64_sys_fsconfig+0xa14/0xd18
[   45.210299][ T3961] 
[   45.210299][ T3961] stack backtrace:
[   45.211493][ T3961] CPU: 1 PID: 3961 Comm: syz-executor920 Not tainted 5.15.111-syzkaller #0
[   45.213270][ T3961] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
[   45.215260][ T3961] Call trace:
[   45.215946][ T3961]  dump_backtrace+0x0/0x530
[   45.216946][ T3961]  show_stack+0x2c/0x3c
[   45.217783][ T3961]  dump_stack_lvl+0x108/0x170
[   45.218848][ T3961]  dump_stack+0x1c/0x58
[   45.219678][ T3961]  print_circular_bug+0x150/0x1b8
[   45.220696][ T3961]  check_noncircular+0x2cc/0x378
[   45.221817][ T3961]  __lock_acquire+0x32cc/0x7620
[   45.222821][ T3961]  lock_acquire+0x240/0x77c
[   45.223710][ T3961]  write_mmp_block+0x170/0xd18
[   45.224724][ T3961]  ext4_multi_mount_protect+0x2e0/0x894
[   45.225919][ T3961]  ext4_remount+0x1fc8/0x2710
[   45.226945][ T3961]  legacy_reconfigure+0xfc/0x114
[   45.227974][ T3961]  reconfigure_super+0x340/0x690
[   45.229053][ T3961]  __arm64_sys_fsconfig+0xa1c/0xd18
[   45.230150][ T3961]  invoke_syscall+0x98/0x2b8
[   45.231099][ T3961]  el0_svc_common+0x138/0x258
[   45.232093][ T3961]  do_el0_svc+0x58/0x14c
[   45.232966][ T3961]  el0_svc+0x7c/0x1f0
[   45.233811][ T3961]  el0t_64_sync_handler+0x84/0xe4
[   45.234842][ T3961]  el0t_64_sync+0x1a0/0x1a4
[   45.248081][ T3961] EXT4-fs warning (device loop0): ext4_enable_quotas:6397: Failed to enable quota tracking (type=2, err=-22, ino=15). Please run e2fsck to fix.