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autofs panic after unmounts of autofs filesystem (Doc ID 2810679.1)

Last updated on SEPTEMBER 28, 2021

Applies to:

Solaris Operating System - Version 11.4 and later
Information in this document applies to any platform.

Symptoms

Typical panic string would be:

BAD TRAP: type=e (#pf Page fault) rp=ffffe330048fb850 addr=18 occurred in module "genunix" due to a NULL pointer dereference

Changes

 Panic thread would look like:

-- on kernel thread's stack --
unix:vpanic_common+0x13a()
void unix:panic+0x67((const char *)0xfffffffffb9a6120, ...)
void unix:die+0x147((uint_t)0xe, (struct regs *)0xffffe330048fb850, (caddr_t)0x18, (processorid_t)0x19)
void unix:trap+0x1457((struct regs *)0xffffe330048fb850, (caddr_t)0x18, (processorid_t)0x19)

-- panic trap data type: 0xe (Page fault)
addr 0x18 rp 0xffffe330048fb850

<trap>void genunix:fop_inactive+0x88((vnode_t *)0xffffa701237f9600, (cred_t *)0xffffa7006fbf5dd8, (caller_context_t *)0)
void genunix:vn_rele+0xa5((vnode_t *)0xffffa701237f9600)
void autofs:unmount_subtree_impl+0x25b((void *)0xffffa702a7e22e78)
void genunix:taskq_thread+0x3d5((void *)0xffffa700fefd5ba8)
unix:thread_start+8()
-- end of kernel thread's stack --

> vnode 0xffffa701237f9600
vnode: 0xffffa701237f9600
v_flag: 1 (VROOT)
v_type: VDIR
v_vfsp: 0xffffa704c2142948
v_op: *autofs(data):auto_vnodeops
v_data: 0xffffa70166621d80 (not yet handled)

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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