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btree trans held srcu lock (delaying memory reclaim) for 10 seconds

WARNING: CPU: 4 PID: 1873852 at fs/bcachefs/btree_iter.c:3231 bch2_trans_srcu_unlock+0x140/0x160 [bcachefs]

Modules linked in: bcachefs(E) ceph libceph netfs dm_mod chacha_neon libchacha poly1305_neon lz4hc_compress lz4_compress sd_mod sg iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi scsi_mod scsi_common binfmt_misc nls_ascii nls_cp437 vfat fat aes_ce_blk aes_ce_cipher polyval_ce polyval_generic ghash_ce gf128mul evdev sha2_ce sha256_arm64 sha1_ce arm_smccc_trng virtio_console button configfs efi_pstore nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vsock efivarfs qemu_fw_cfg virtio_rng ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 btrfs blake2b_generic xor xor_neon raid6_pq xhci_pci xhci_hcd usbcore virtio_net net_failover virtio_blk failover usb_common [last unloaded: bcachefs]

CPU: 4 UID: 0 PID: 1873852 Comm: umount Tainted: G W E 6.15.0-rc6+ #11 NONE

Tainted: [W]=WARN, [E]=UNSIGNED_MODULE

Hardware name: QEMU KVM Virtual Machine, BIOS 2025.02-6 04/08/2025

pstate: 60401005 (nZCv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--)

pc : bch2_trans_srcu_unlock+0x140/0x160 [bcachefs]

lr : bch2_trans_srcu_unlock+0x140/0x160 [bcachefs]

sp : ffff8000a0deb980

x29: ffff8000a0deb980 x28: 0000a2ad65974800 x27: ffff000683880000

x26: ffff0000d4100000 x25: 0000000000000001 x24: ffff0001f2e6c000

x23: ffff8000a0debb00 x22: ffff0001f2e6c000 x21: 0000000000000003

x20: ffff0000d4100000 x19: ffff0001f2e6c000 x18: 00000000ffffffff

x17: 000c6f1e0003b3b4 x16: ffffa4b79f4013c8 x15: ffff0009fa76d539

x14: ffff8000a0deb4f0 x13: ffff0009fa76d544 x12: 616c636572207972

x11: 6f6d656d20676e69 x10: 79616c656428206b x9 : ffffa4b79f5b7e68

x8 : 0000000000000002 x7 : 0000000000000000 x6 : 000000000000000d

x5 : ffff0009fa80c908 x4 : 0000000000000000 x3 : 0000000000000000

x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000d024dc80

Call trace:

bch2_trans_srcu_unlock+0x140/0x160 [bcachefs] (P)

bch2_trans_begin+0x5d4/0x748 [bcachefs]

bch2_verify_accounting_clean+0x13c/0xb10 [bcachefs]

bch2_fs_read_only+0x370/0x408 [bcachefs]

__bch2_fs_stop+0x60/0x2a8 [bcachefs]

bch2_put_super+0x1c/0x38 [bcachefs]

generic_shutdown_super+0x80/0x120

bch2_kill_sb+0x20/0x40 [bcachefs]

deactivate_locked_super+0x4c/0x170

deactivate_super+0x8c/0xb0

cleanup_mnt+0xb4/0x150

__cleanup_mnt+0x1c/0x30

task_work_run+0x98/0x130

do_notify_resume+0x154/0x180

el0_svc+0xf4/0x120

el0t_64_sync_handler+0x10c/0x140

el0t_64_sync+0x198/0x1a0

---[ end trace 0000000000000000 ]---