at some point in time and for whatever reason ubi partiton on my fritzbox 7530 is switching to read-only mode. any clue whats happening here?
also i am unable to remount in rw mode with mount -o remount,rw /overlay
Jan 28 22:56:23 router kernel: [ 99.691534] ubifs_bgt0_4: page allocation failure: order:0, mode:0x800(GFP_NOWAIT), nodemask=(null),cpuset=/,mems_allowed=0
Jan 28 22:58:26 router kernel: [ 156.827343] ubi0 warning: ubi_eba_write_leb: failed to write data to PEB 258
Jan 28 22:58:26 router kernel: [ 156.840682] ubi0 warning: ubi_ro_mode.part.0: switch to read-only mode
Jan 28 22:58:26 router kernel: [ 156.847905] CPU: 3 PID: 256 Comm: ubifs_bgt0_4 Not tainted 5.15.90 #0
Jan 28 22:58:26 router kernel: [ 156.854237] Hardware name: Generic DT based system
Jan 28 22:58:26 router kernel: [ 156.860755] [<c030cdac>] (unwind_backtrace) from [<c030984c>] (show_stack+0x10/0x14)
Jan 28 22:58:26 router kernel: [ 156.865443] [<c030984c>] (show_stack) from [<c061ca80>] (dump_stack_lvl+0x40/0x4c)
Jan 28 22:58:26 router kernel: [ 156.873341] [<c061ca80>] (dump_stack_lvl) from [<c0712e18>] (ubi_eba_write_leb+0x238/0x6d0)
Jan 28 22:58:26 router kernel: [ 156.880724] [<c0712e18>] (ubi_eba_write_leb) from [<c07114bc>] (ubi_leb_write+0xcc/0xe4)
Jan 28 22:58:26 router kernel: [ 156.888967] [<c07114bc>] (ubi_leb_write) from [<c05232b4>] (ubifs_leb_write+0xa0/0x104)
Jan 28 22:58:26 router kernel: [ 156.897300] [<c05232b4>] (ubifs_leb_write) from [<c0523ba8>] (ubifs_wbuf_sync_nolock+0xf8/0x2d8)
Jan 28 22:58:26 router kernel: [ 156.905027] [<c0523ba8>] (ubifs_wbuf_sync_nolock) from [<c0523f60>] (ubifs_bg_wbufs_sync+0x4c/0x188)
Jan 28 22:58:26 router kernel: [ 156.914054] [<c0523f60>] (ubifs_bg_wbufs_sync) from [<c052dcc8>] (ubifs_bg_thread+0x98/0x170)
Jan 28 22:58:26 router kernel: [ 156.923167] [<c052dcc8>] (ubifs_bg_thread) from [<c03421cc>] (kthread+0x148/0x164)
Jan 28 22:58:26 router kernel: [ 156.931587] [<c03421cc>] (kthread) from [<c0300110>] (ret_from_fork+0x14/0x24)
Jan 28 22:58:26 router kernel: [ 156.939048] Exception stack(0xc2c3dfb0 to 0xc2c3dff8)
Jan 28 22:58:26 router kernel: [ 156.946255] dfa0: 00000000 00000000 00000000 00000000
Jan 28 22:58:26 router kernel: [ 156.951383] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Jan 28 22:58:26 router kernel: [ 156.959543] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Jan 28 22:58:26 router kernel: [ 156.974195] UBIFS warning (ubi0:4 pid 256): ubifs_ro_mode.part.0: switched to read-only mode, error -22
Jan 28 22:58:26 router kernel: [ 156.984266] CPU: 3 PID: 256 Comm: ubifs_bgt0_4 Not tainted 5.15.90 #0
Jan 28 22:58:27 router kernel: [ 156.993566] Hardware name: Generic DT based system
Jan 28 22:58:27 router kernel: [ 157.000164] [<c030cdac>] (unwind_backtrace) from [<c030984c>] (show_stack+0x10/0x14)
Jan 28 22:58:27 router kernel: [ 157.004853] [<c030984c>] (show_stack) from [<c061ca80>] (dump_stack_lvl+0x40/0x4c)
Jan 28 22:58:27 router kernel: [ 157.012751] [<c061ca80>] (dump_stack_lvl) from [<c0523310>] (ubifs_leb_write+0xfc/0x104)
Jan 28 22:58:27 router kernel: [ 157.020140] [<c0523310>] (ubifs_leb_write) from [<c0523ba8>] (ubifs_wbuf_sync_nolock+0xf8/0x2d8)
Jan 28 22:58:27 router kernel: [ 157.028378] [<c0523ba8>] (ubifs_wbuf_sync_nolock) from [<c0523f60>] (ubifs_bg_wbufs_sync+0x4c/0x188)
Jan 28 22:58:27 router kernel: [ 157.037144] [<c0523f60>] (ubifs_bg_wbufs_sync) from [<c052dcc8>] (ubifs_bg_thread+0x98/0x170)
Jan 28 22:58:27 router kernel: [ 157.046258] [<c052dcc8>] (ubifs_bg_thread) from [<c03421cc>] (kthread+0x148/0x164)
Jan 28 22:58:27 router kernel: [ 157.054687] [<c03421cc>] (kthread) from [<c0300110>] (ret_from_fork+0x14/0x24)
Jan 28 22:58:27 router kernel: [ 157.062140] Exception stack(0xc2c3dfb0 to 0xc2c3dff8)
Jan 28 22:58:27 router kernel: [ 157.069346] dfa0: 00000000 00000000 00000000 00000000
Jan 28 22:58:27 router kernel: [ 157.074475] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Jan 28 22:58:27 router kernel: [ 157.082632] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Jan 28 22:58:27 router kernel: [ 157.090866] CPU: 3 PID: 256 Comm: ubifs_bgt0_4 Not tainted 5.15.90 #0
Jan 28 22:58:27 router kernel: [ 157.097210] Hardware name: Generic DT based system
Jan 28 22:58:27 router kernel: [ 157.103808] [<c030cdac>] (unwind_backtrace) from [<c030984c>] (show_stack+0x10/0x14)
Jan 28 22:58:27 router kernel: [ 157.108497] [<c030984c>] (show_stack) from [<c061ca80>] (dump_stack_lvl+0x40/0x4c)
Jan 28 22:58:27 router kernel: [ 157.116396] [<c061ca80>] (dump_stack_lvl) from [<c0523314>] (ubifs_leb_write+0x100/0x104)
Jan 28 22:58:27 router kernel: [ 157.123775] [<c0523314>] (ubifs_leb_write) from [<c0523ba8>] (ubifs_wbuf_sync_nolock+0xf8/0x2d8)
Jan 28 22:58:27 router kernel: [ 157.132032] [<c0523ba8>] (ubifs_wbuf_sync_nolock) from [<c0523f60>] (ubifs_bg_wbufs_sync+0x4c/0x188)
Jan 28 22:58:27 router kernel: [ 157.140878] [<c0523f60>] (ubifs_bg_wbufs_sync) from [<c052dcc8>] (ubifs_bg_thread+0x98/0x170)
Jan 28 22:58:27 router kernel: [ 157.150002] [<c052dcc8>] (ubifs_bg_thread) from [<c03421cc>] (kthread+0x148/0x164)
Jan 28 22:58:27 router kernel: [ 157.158419] [<c03421cc>] (kthread) from [<c0300110>] (ret_from_fork+0x14/0x24)
Jan 28 22:58:27 router kernel: [ 157.165873] Exception stack(0xc2c3dfb0 to 0xc2c3dff8)
Jan 28 22:58:27 router kernel: [ 157.173077] dfa0: 00000000 00000000 00000000 00000000
Jan 28 22:58:27 router kernel: [ 157.178208] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Jan 28 22:58:27 router kernel: [ 157.186365] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Jan 28 23:53:02 router kernel: [ 533.450615] mtdblock: MTD device 'QSEE_B' is NAND, please consider using UBI block devices instead.