Kernel panic in the __kmalloc() due to the third party kernel module [fidelis]

Solution Unverified - Updated -

Issue

  • Kernel panics with the following messages:
[ 5639.408192] BUG: unable to handle kernel paging request at 00000007fffffffe
[ 5639.408199] IP: [<ffffffffa2c281b4>] __kmalloc+0x94/0x230
[ 5639.408210] PGD 80000006ebf9c067 PUD 0 
[ 5639.408213] Oops: 0000 [#1] SMP 
[ 5639.408216] Modules linked in: fidelis(OE) [...]
[ 5639.408265] CPU: 2 PID: 5373 Comm: oracle Kdump: loaded Tainted: G           OE  ------------   3.10.0-1160.el7.x86_64 #1
[ 5639.408267] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020
[ 5639.408269] task: ffff9dc78218b180 ti: ffff9dc726704000 task.ti: ffff9dc726704000
[ 5639.408270] RIP: 0010:[<ffffffffa2c281b4>]  [<ffffffffa2c281b4>] __kmalloc+0x94/0x230
[----]
[ 5639.408314] Call Trace:
[ 5639.408322]  [<ffffffffc08ec115>] kmemalloc+0x15/0x20 [fidelis]   <<<<----
[ 5639.408325]  [<ffffffffc08ea642>] put_string+0x42/0x140 [fidelis]
[ 5639.408328]  [<ffffffffc08eb369>] get_filename_fd_load+0xe9/0x180 [fidelis]
[ 5639.408330]  [<ffffffffc08e7234>] open_handler+0x154/0x400 [fidelis]
[ 5639.408336]  [<ffffffffa2d2cf9e>] ? process_measurement+0x8e/0x250
[ 5639.408342]  [<ffffffffa2c71bb4>] ? mntput+0x24/0x40
[ 5639.408348]  [<ffffffffa2c59c19>] ? terminate_walk+0x49/0x50
[ 5639.408351]  [<ffffffffa2c5dead>] ? do_last+0x66d/0x1340
[ 5639.408391]  [<ffffffffc063e389>] ? xfs_iunlock+0xa9/0x120 [xfs]
[ 5639.408395]  [<ffffffffa2d97df8>] ? lockref_put_or_lock+0x48/0x80
[ 5639.408397]  [<ffffffffa2c71bb4>] ? mntput+0x24/0x40
[ 5639.408399]  [<ffffffffa2c5ecf6>] ? path_openat+0x176/0x5a0
[ 5639.408403]  [<ffffffffa2c4cafe>] ? SyS_open+0x1e/0x20
[ 5639.408407]  [<ffffffffa318cda8>] trampoline_handler+0x148/0x220
[ 5639.408409]  [<ffffffffa2c4cafe>] ? SyS_open+0x1e/0x20
[ 5639.408411]  [<ffffffffa318c47e>] kretprobe_trampoline+0x25/0x57
[ 5639.408413]  [<ffffffffa2c5fb5d>] ? putname+0x3d/0x60
[ 5639.408415]  [<ffffffffa318c459>] ? kretprobe_trampoline_holder+0x9/0x9
[ 5639.408421]  [<ffffffffc08242b5>] twnotify_sys_open+0x25/0xe0 [twnotify]
[ 5639.408424]  [<ffffffffa3193f92>] system_call_fastpath+0x25/0x2a
[ 5639.408425] Code: 90 3e 5d 49 8b 50 08 4d 8b 28 49 8b 40 10 4d 85 ed 0f 84 29 01 00 00 48 85 c0 0f 84 20 01 00 00 49 63 42 20 48 8d 4a 01 4d 8b 02 <49> 8b 5c 05 00 4c 89 e8 65 49 0f c7 08 0f 94 c0 84 c0 74 b9 49 
[ 5639.408446] RIP  [<ffffffffa2c281b4>] __kmalloc+0x94/0x230

Environment

  • Red Hat Enterprise Linux 7.
  • Third-Party [fidelis] kernel module.

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