46.3.2. Displaying a Backtrace

download PDF
To display the kernel stack trace, type the bt command at the interactive prompt. You can use bt pid to display the backtrace of the selected process.

Example 46.4. Displaying the kernel stack trace

crash> bt
PID: 6042   TASK: f09c7000  CPU: 0   COMMAND: "bash"
 #0 [e1ba9d10] schedule at c061c738
 #1 [e1ba9d28] netlink_getsockopt at c05d50bb
 #2 [e1ba9d34] netlink_queue_skip at c05d40d5
 #3 [e1ba9d40] netlink_sock_destruct at c05d506d
 #4 [e1ba9d84] sock_recvmsg at c05b6cc8
 #5 [e1ba9dd4] enqueue_task at c041eed5
 #6 [e1ba9dec] try_to_wake_up at c041f798
 #7 [e1ba9e10] vsnprintf at c04efef2
 #8 [e1ba9ec0] machine_kexec at c0419bf0
 #9 [e1ba9f04] sys_kexec_load at c04448a1
#10 [e1ba9f4c] tty_audit_exit at c0549f06
#11 [e1ba9f50] tty_audit_add_data at c0549d5d
#12 [e1ba9f84] do_readv_writev at c0476055
#13 [e1ba9fb8] system_call at c0404f10
    EAX: ffffffda  EBX: 00000001  ECX: b7f7f000  EDX: 00000002 
    DS:  007b      ESI: 00000002  ES:  007b      EDI: b7f7f000
    SS:  007b      ESP: bf83f478  EBP: bf83f498
    CS:  0073      EIP: 009ac402  ERR: 00000004  EFLAGS: 00000246
Type help bt for more information on the command usage.
Red Hat logoGithubRedditYoutubeTwitter


Try, buy, & sell


About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

© 2024 Red Hat, Inc.