System panic in momHandleUnlinkMsg from the strmfs_mod kernel module

Issue

• System panic in momHandleUnlinkMsg()

[789903.290666] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
[789903.290687] IP: [<ffffffffa046455d>] momHandleUnlinkMsg+0x124/0x251 [strmfs_mod]
[789903.290720] PGD fdd466067 PUD fdd467067 PMD 0 
[789903.290723] Oops: 0002 [#1] SMP 
[789903.290726] Modules linked in: iptable_filter btrfs zlib_deflate raid6_pq xor vfat msdos fat xfs libcrc32c bridge stp llc binfmt_misc fuse ulcm_kmem(POE) strmfs_mod(OE) vmw_vsock_vmci_transport vsock coretemp crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ppdev ablk_helper vmw_balloon cryptd sg pcspkr parport_pc vmw_vmci parport shpchp i2c_piix4 nls_utf8 isofs loop nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables ext4 mbcache jbd2 sr_mod cdrom ata_generic pata_acpi sd_mod crc_t10dif crct10dif_generic vmwgfx crct10dif_pclmul crct10dif_common drm_kms_helper crc32c_intel ttm drm serio_raw ata_piix vmxnet3 libata vmw_pvscsi i2c_core floppy dm_mirror dm_region_hash dm_log dm_mod
[789903.290764] CPU: 7 PID: 18350 Comm: mrs Tainted: P           OE  ------------   3.10.0-327.el7.x86_64 #1
[789903.290766] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/17/2015
[789903.290768] task: ffff880fe265b980 ti: ffff880fe3fbc000 task.ti: ffff880fe3fbc000
[789903.290769] RIP: 0010:[<ffffffffa046455d>]  [<ffffffffa046455d>] momHandleUnlinkMsg+0x124/0x251 [strmfs_mod]
[789903.290784] RSP: 0018:ffff880fe3fbfc38  EFLAGS: 00010046
[789903.290786] RAX: 0000000000000000 RBX: ffff880fe03c9a80 RCX: 000000000000c8b4
[789903.290787] RDX: 00000000c8b4c8b4 RSI: ffff880035f4aec0 RDI: ffff880fe7eb1f60
[789903.290788] RBP: ffffc9000e16f9d0 R08: 0000000000000082 R09: 0000000180400040
[789903.290789] R10: ffff880ffec03b00 R11: 0000000000000202 R12: 0000000000000082
[789903.290790] R13: ffff880035f4aec0 R14: 0000000000000292 R15: ffff880035f4ae00
[789903.290792] FS:  00007f84115ab740(0000) GS:ffff880fff2e0000(0000) knlGS:0000000000000000
[789903.290793] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[789903.290794] CR2: 0000000000000028 CR3: 00000000b5630000 CR4: 00000000000407e0
[789903.290839] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[789903.290856] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[789903.290857] Stack:
[789903.290858]  00000000077c45f9 ffff880fda633888 ffff880fe3fbfc48 ffff880fe3fbfc48
[789903.290861]  ffff880fe3fbfc80 ffff880035f4aec0 ffff880fda633888 ffff880035f4ae00
[789903.290863]  ffff880fdaa0dd00 000000012f059d4b ffff880fdab0b888 ffffffffa04674a5
[789903.290866] Call Trace:
[789903.290884]  [<ffffffffa04674a5>] ? momUWPut+0x221/0x4de [strmfs_mod]
[789903.290896]  [<ffffffffa042b413>] ? putnext+0x33/0x50 [strmfs_mod]
[789903.290906]  [<ffffffffa042b85d>] ? strmhd_wsrv+0x4d/0xa0 [strmfs_mod]
[789903.290918]  [<ffffffffa0432c99>] ? stream_scheduler_function+0x1b9/0x390 [strmfs_mod]
[789903.290929]  [<ffffffffa0432f69>] ? scheduler_function+0xf9/0x320 [strmfs_mod]
[789903.290942]  [<ffffffffa042ac4c>] ? put+0x11c/0x170 [strmfs_mod]
[789903.290953]  [<ffffffffa042ddd1>] ? issueUnlink+0x1a1/0x340 [strmfs_mod]
[789903.290964]  [<ffffffffa0430702>] ? punlinkstreamProcessing+0x122/0x1b0 [strmfs_mod]
[789903.290975]  [<ffffffffa04323cf>] ? strm_ioctl+0x1ef/0x450 [strmfs_mod]
[789903.290980]  [<ffffffff811f1ef5>] ? do_vfs_ioctl+0x2e5/0x4c0
[789903.290982]  [<ffffffff811f2171>] ? SyS_ioctl+0xa1/0xc0
[789903.290988]  [<ffffffff81645909>] ? system_call_fastpath+0x16/0x1b
[789903.290989] Code: 00 48 85 ed 0f 84 c1 00 00 00 48 8b bd 68 01 00 00 e8 18 f9 fc ff 49 89 c4 48 c7 85 28 01 00 00 00 00 00 00 48 8b 85 30 01 00 00 <48> c7 40 28 00 00 00 00 48 8b bd 30 01 00 00 e8 af 6c fc ff 48 
[789903.291008] RIP  [<ffffffffa046455d>] momHandleUnlinkMsg+0x124/0x251 [strmfs_mod]
[789903.291023]  RSP <ffff880fe3fbfc38>
[789903.291024] CR2: 0000000000000028