Server crashes with unable to handle kernel paging request at uncached_fill_pages

Solution Verified - Updated -

Issue

Server crashes with the following messages.

[32348.841595] BUG: unable to handle kernel paging request at 0000000000038108
[32348.841627] PGD 0 P4D 0 
[32348.841638] Oops: 0000 [#1] SMP NOPTI
[32348.841651] CPU: 1 PID: 3620 Comm: cifsd Kdump: loaded Not tainted 4.18.0-513.18.1.el8_9.x86_64 #1
[32348.841678] Hardware name: VMware, Inc. VMware7,1/440BX Desktop Reference Platform, BIOS VMW71.00V.18227214.B64.2106252220 06/25/2021
[32348.841710] RIP: 0010:uncached_fill_pages+0x113/0x1b0 [cifs]
[32348.841758] Code: 83 c4 18 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 44 29 f9 45 85 ed 75 a9 48 c7 00 00 00 00 00 83 ab fc 00 00 00 01 <49> 8b 42 08 48 8d 50 ff a8 01 4c 0f 45 d2 0f 1f 44 00 00 f0 41 ff
[32348.841806] RSP: 0018:ffffb85047a7bdc0 EFLAGS: 00010202
[32348.841822] RAX: ffff9acb80004e00 RBX: ffff9ace623c8200 RCX: 00000000ff9f8f40
[32348.841841] RDX: 0000000000000000 RSI: ffff9ace623c8200 RDI: ffff9acdf0eaf000
[32348.841861] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffffbaaf0001
[32348.841880] R10: 0000000000038100 R11: 0000000000000001 R12: 0000000000000000
[32348.841902] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000006080c0
[32348.841922] FS:  0000000000000000(0000) GS:ffff9ada7de40000(0000) knlGS:0000000000000000
[32348.841949] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[32348.841966] CR2: 0000000000038108 CR3: 0000000cff810004 CR4: 00000000007706e0
[32348.842004] PKRU: 55555554
[32348.842014] Call Trace:
[32348.842433]  ? __die_body+0x1a/0x60
[32348.842666]  ? no_context+0x1ba/0x3f0
[32348.842832]  ? __bad_area_nosemaphore+0x16c/0x1c0
[32348.842994]  ? do_page_fault+0x37/0x12d
[32348.843143]  ? page_fault+0x1e/0x30
[32348.843284]  ? tcp_recvmsg+0x6c1/0xa90
[32348.843427]  ? uncached_fill_pages+0x113/0x1b0 [cifs]
[32348.843616]  cifs_readv_receive+0x20a/0x630 [cifs]
[32348.843779]  cifs_demultiplex_thread+0x757/0xc00 [cifs]
[32348.843938]  ? cifs_handle_standard+0x1a0/0x1a0 [cifs]
[32348.844095]  kthread+0x134/0x150
[32348.844231]  ? set_kthread_struct+0x50/0x50
[32348.844367]  ret_from_fork+0x1f/0x40
[32348.844537] Modules linked in: md4 cmac nls_utf8 cifs rdma_cm iw_cm ib_cm ib_core libarc4 rpcsec_gss_krb5 nfsv4 dns_resolver nfs lockd grace fscache veth xt_nat xt_conntrack ipt_MASQUERADE nf_conntrack_netlink nft_counter nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_addrtype nft_compat nf_tables nfnetlink br_netfilter bridge stp llc tcp_diag inet_diag overlay vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock vfat fat intel_rapl_msr intel_rapl_common intel_uncore_frequency_common isst_if_mbox_msr isst_if_common nfit libnvdimm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel vmw_balloon rapl joydev pcspkr vmw_vmci i2c_piix4 auth_rpcgss sunrpc xfs libcrc32c sd_mod t10_pi sg ata_generic vmwgfx drm_ttm_helper ttm drm_kms_helper crc32c_intel syscopyarea sysfillrect sysimgblt ata_piix drm libata serio_raw vmxnet3 vmw_pvscsi dm_mirror dm_region_hash dm_log dm_mod fuse
[32348.845593] CR2: 0000000000038108

Environment

  • Red Hat Enterprise Linux 8
  • Seen on Kernel-4.18.0-513.18.1.el8_9.x86_64 and below
  • cifs

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