diff options
| author | Steve French <sfrench@us.ibm.com> | 2005-08-18 09:37:34 -0700 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2005-08-18 09:37:34 -0700 |
| commit | f191401f5906f4d942fac87ebeb4671faf1ba7d6 (patch) | |
| tree | 5d918edb41604cde78668e3fba2cfd9fb4f11641 /fs/cifs | |
| parent | 1982c344f1bf08118f7c224958b30c64e162009e (diff) | |
[CIFS] rmmod cifs can oops if done soon after the last cifs unmount
Signed-off-by: Shaggy (shaggy@austin.ibm.com)
Signed-off-by: Steve French (sfrench@us.ibm.com)
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/cifsfs.c | 2 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 25 |
2 files changed, 19 insertions, 8 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 8cc23e7d0d5..7fda0f7d9c0 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -834,8 +834,8 @@ static int cifs_oplock_thread(void * dummyarg) spin_unlock(&GlobalMid_Lock); } } while(!signal_pending(current)); - complete_and_exit (&cifs_oplock_exited, 0); oplockThread = NULL; + complete_and_exit (&cifs_oplock_exited, 0); } static int __init diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 9e8256003f7..ef0432c4448 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -29,6 +29,7 @@ #include <linux/utsname.h> #include <linux/mempool.h> #include <linux/delay.h> +#include <linux/completion.h> #include <asm/uaccess.h> #include <asm/processor.h> #include "cifspdu.h" @@ -44,6 +45,8 @@ #define CIFS_PORT 445 #define RFC1001_PORT 139 +static DECLARE_COMPLETION(cifsd_complete); + extern void SMBencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24); extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, @@ -339,6 +342,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server) atomic_inc(&tcpSesAllocCount); length = tcpSesAllocCount.counter; write_unlock(&GlobalSMBSeslock); + complete(&cifsd_complete); if(length > 1) { mempool_resize(cifs_req_poolp, length + cifs_min_rcv, @@ -676,7 +680,7 @@ multi_t2_fnd: msleep(125); } - if (list_empty(&server->pending_mid_q)) { + if (!list_empty(&server->pending_mid_q)) { /* mpx threads have not exited yet give them at least the smb send timeout time for long ops */ /* due to delays on oplock break requests, we need @@ -713,7 +717,7 @@ multi_t2_fnd: GFP_KERNEL); } - msleep(250); + complete_and_exit(&cifsd_complete, 0); return 0; } @@ -1617,8 +1621,9 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, kfree(volume_info.password); FreeXid(xid); return rc; - } else - rc = 0; + } + wait_for_completion(&cifsd_complete); + rc = 0; memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); srvTcp->sequence_number = 0; } @@ -1759,8 +1764,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, spin_lock(&GlobalMid_Lock); srvTcp->tcpStatus = CifsExiting; spin_unlock(&GlobalMid_Lock); - if(srvTcp->tsk) + if(srvTcp->tsk) { send_sig(SIGKILL,srvTcp->tsk,1); + wait_for_completion(&cifsd_complete); + } } /* If find_unc succeeded then rc == 0 so we can not end */ if (tcon) /* up accidently freeing someone elses tcon struct */ @@ -1773,8 +1780,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, temp_rc = CIFSSMBLogoff(xid, pSesInfo); /* if the socketUseCount is now zero */ if((temp_rc == -ESHUTDOWN) && - (pSesInfo->server->tsk)) + (pSesInfo->server->tsk)) { send_sig(SIGKILL,pSesInfo->server->tsk,1); + wait_for_completion(&cifsd_complete); + } } else cFYI(1, ("No session or bad tcon")); sesInfoFree(pSesInfo); @@ -3241,8 +3250,10 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) return 0; } else if (rc == -ESHUTDOWN) { cFYI(1,("Waking up socket by sending it signal")); - if(cifsd_task) + if(cifsd_task) { send_sig(SIGKILL,cifsd_task,1); + wait_for_completion(&cifsd_complete); + } rc = 0; } /* else - we have an smb session left on this socket do not kill cifsd */ |