RHEL8 system running debug kernel hangs with the warning at fs/super.c:1674 __sb_start_write+0x2b9/0x300
Issue
- RHEL8 system running debug kernel hangs with the following warning message.
[396802.650592] WARNING: CPU: 7 PID: 980 at fs/super.c:1674 __sb_start_write+0x2b9/0x300
[396802.123723] do_page_fault+0x3d/0x520
[396802.651298] Modules linked in: tcp_diag udp_diag inet_diag nfsv3 nfs_acl rpcsec_gss_krb5 nfsv4 dns_resolver nfs lockd grace fscache xt_conntrack xt_owner nft_counter ip_tables nft_compat nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_tables_set nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink vfat fat ext4 mbcache jbd2 intel_rapl_msr intel_rapl_common nfit libnvdimm kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel rapl pcspkr hyperv_fb hv_utils hv_balloon joydev binfmt_misc auth_rpcgss sunrpc xfs libcrc32c mlx5_core mlxfw sd_mod tls t10_pi sg pci_hyperv pci_hyperv_intf serio_raw hv_storvsc hv_netvsc scsi_transport_fc hyperv_keyboard hid_hyperv hv_vmbus crc32c_intel dm_mirror dm_region_hash dm_log dm_mod
[396802.123723] ? page_fault+0x8/0x30
[396802.651298] CPU: 7 PID: 980 Comm: systemd-journal Kdump: loaded Tainted: GBW ----------- 4.18.0-305.65.1.el8_4.x86_64+debug #1
[396802.123723] page_fault+0x1e/0x30
[396802.651298] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022
[396802.123723] RIP: 0033:0x7f9a3eb92edc
[396802.651298] RIP: 0010:__sb_start_write+0x2b9/0x300
[396802.123723] Code: e8 49 eb ed ff b8 01 00 00 00 f0 44 0f b1 a3 78 01 00 00 0f 85 5a ff ff ff 0f b6 43 1c 48 8b 93 d0 00 00 00 c0 e8 05 83 e0 02 <88> 42 10 8b 3b e8 1a eb ed ff e9 3a ff ff ff 0f 1f 44 00 00 ba 06
[396802.651298] Code: fd ff ff be 01 00 00 00 48 89 df e8 61 01 99 ff 65 ff 0d 12 40 c4 59 84 c0 0f 85 47 fe ff ff 31 c0 45 84 f6 0f 84 38 ff ff ff <0f> 0b e9 31 ff ff ff 31 f6 48 89 df e8 36 01 99 ff e9 16 ff ff ff
[396802.123723] RSP: 002b:00007f9a32e08c90 EFLAGS: 00010246
[396802.651298] RSP: 0000:ffff88a27ba5fb48 EFLAGS: 00010202
[396802.123723] RAX: 0000000000000000 RBX: 0000557deb5d0d50 RCX: 00007f9a3e3d3e57
[396802.651298] RAX: 0000000000000000 RBX: ffff889ff41da500 RCX: ffffffffa5d90c84
[396802.123723] RDX: 00007f9a3f0de000 RSI: 00007f9a3ebe317c RDI: 0000000000000000
[396802.651298] RDX: 0000000000000000 RSI: ffffffffa5c1adc4 RDI: ffffffffa99e61bc
[396802.123723] RBP: 00007f9a3ebe3160 R08: 00007f9a32e09700 R09: 00007f9a32e09700
[396802.123723] R10: 000000000000001c R11: 0000000000000000 R12: 0000000000000002
[396802.651298] RBP: 00000000000002e0 R08: ffffed13c1e0d1a2 R09: 0000000000000000
[396802.123723] R13: 00007ffce0246fdf R14: 0000000000000000 R15: 00007f9a32e08d80
[396802.123723] irq event stamp: 0
[396802.729110] R10: ffff889e0f068d0b R11: ffffed13c1e0d1a1 R12: 00000000ffffffff
[396802.123723] hardirqs last enabled at (0): [<0000000000000000>] 0x0
[396802.744230] R13: ffff889ff41da640 R14: 0000000000000001 R15: ffff889ff41da390
[396802.123723] hardirqs last disabled at (0): [<ffffffffa5c07982>] copy_process+0x1aa2/0x61e0
[396802.753408] FS: 00007f9a3f0cc980(0000) GS:ffff88a32f200000(0000) knlGS:0000000000000000
[396802.123723] softirqs last enabled at (0): [<ffffffffa5c079c8>] copy_process+0x1ae8/0x61e0
[396802.763015] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[396802.123723] softirqs last disabled at (0): [<0000000000000000>] 0x0
[396802.123723] ---[ end trace 4acb268f2fbff7da ]---
[396802.770412] CR2: 00007f9a356e7610 CR3: 000000227bbda006 CR4: 00000000003706e0
[396866.156046] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[396866.161374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[396866.166588] Call Trace:
[396866.169835] __xfs_filemap_fault+0x339/0x6a0 [xfs]
[396866.173997] ? xfs_file_read_iter+0x740/0x740 [xfs]
[396866.178034] ? kasan_record_aux_stack+0x9e/0xb0
[396866.181670] ? call_rcu+0x19c/0xf20
[396866.185774] ? vm_normal_page+0x74/0x280
[396866.189162] ? entry_SYSCALL_64_after_hwframe+0x6a/0xdf
[396866.193426] do_page_mkwrite+0x192/0x350
[396866.197247] do_wp_page+0x7d4/0xc10
[396866.200635] ? finish_mkwrite_fault+0x2d0/0x2d0
[396866.204383] ? pte_pfn+0x100/0x100
[396866.207581] __handle_mm_fault+0xeed/0x11c0
[396866.211103] ? rcu_read_unlock+0x50/0x50
[396866.214429] ? lock_release+0x591/0xd70
[396866.217742] ? copy_page_range+0x2650/0x2650
[396866.221180] ? down_read_trylock+0x19b/0x360
[396866.224640] ? __do_page_fault+0x29c/0xa90
[396866.228377] ? handle_mm_fault+0x5d1/0x750
[396866.231580] handle_mm_fault+0x27b/0x750
[396866.234874] __do_page_fault+0x3ee/0xa90
[396866.237993] ? page_fault+0x8/0x30
[396866.240815] do_page_fault+0x3d/0x520
[396866.243837] ? page_fault+0x8/0x30
[396866.246684] page_fault+0x1e/0x30
[396866.249507] RIP: 0033:0x7f9a3eb94e4b
[396866.252361] Code: 00 48 89 ef 44 89 54 24 2c 4c 89 44 24 20 e8 2c e3 ed ff 85 c0 0f 88 24 ff ff ff 48 8b 44 24 50 4c 8b 44 24 20 44 8b 54 24 2c <4c> 89 40 18 e9 a2 fd ff ff 0f 1f 40 00 48 8b 54 24 38 48 8b 44 24
[396866.263229] RSP: 002b:00007ffce0244600 EFLAGS: 00010246
[396866.266834] RAX: 00007f9a356e75f8 RBX: 00000000000c1700 RCX: 00007f9a3ebe35f4
[396866.271371] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000557deb1b2ad0
[396866.275959] RBP: 0000557deb466e80 R08: 00000000035dc120 R09: 00000000014da5f8
[396866.280312] R10: 0000000000000000 R11: 0000000000000000 R12: 0000557deb6b3570
[396866.284712] R13: 0000000000000028 R14: 00007ffce0244638 R15: 00007ffce0244630
Environment
- Red Hat Enterprise Linux 8
- kernel-debug-core (debug kernel)
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