mirror of
https://github.com/varun-r-mallya/sysprof.git
synced 2025-12-31 20:36:25 +00:00
+Sat Apr 16 14:15:55 2005 Soeren Sandmann <sandmann@redhat.com>
+ + * TODO: Update + + * sysprof-module.c (x_access_process_vm): On kernel 2.6.9 and + later use get_task_mm()/mmput() instead of directly accessing + task->mm. +
This commit is contained in:
Søren Sandmann Pedersen
@ -1,3 +1,11 @@
|
||||
Sat Apr 16 14:15:55 2005 Soeren Sandmann <sandmann@redhat.com>
|
||||
|
||||
* TODO: Update
|
||||
|
||||
* sysprof-module.c (x_access_process_vm): On kernel 2.6.9 and
|
||||
later use get_task_mm()/mmput() instead of directly accessing
|
||||
task->mm.
|
||||
|
||||
Sat Apr 16 01:54:18 2005 Søren Sandmann <sandmann@redhat.com>
|
||||
|
||||
* TODO: Add backtrace for kernel oops.
|
||||
|
||||
2
README
2
README
@ -11,7 +11,7 @@ program "sysprof".
|
||||
- The module must be compiled with the same compiler that compiled the
|
||||
kernel it is going to be used with. For most systems that is just
|
||||
the system compiler, but if you have upgraded your kernel it is
|
||||
possible the one was compiled with a difference compiler.
|
||||
possible the one was compiled with a different compiler.
|
||||
|
||||
In that case, "insmod sysprof-module.ko" will produce this
|
||||
error message:
|
||||
|
||||
99
TODO
99
TODO
@ -6,54 +6,11 @@ Before 1.0:
|
||||
- or block unloading until all processes have exited
|
||||
- Find out what happened here:
|
||||
|
||||
[ Try and reproduce by having a ptraced process malloc/mmap a page of memory, then have the
|
||||
ptracing process read a byte from it.
|
||||
]
|
||||
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Unable to handle kernel NULL pointer dereference at virtual address 000001b8
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: printing eip:
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: c017342c
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: *pde = 00000000
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Oops: 0000 [#1]
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Modules linked in: sysprof_module(U) i2c_algo_bit md5 ipv6 parport_pc lp parport autofs4 sunrpc video button battery ac ohci1394 ieee1394 uhci_hcd ehci_hcd hw_random tpm_atmel tpm i2c_i801 i2c_core snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e1000 floppy dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod ata_piix libata sd_mod scsi_mod
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: CPU: 0
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: EIP: 0060:[<c017342c>] Not tainted VLI
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: EFLAGS: 00010287 (2.6.11-1.1225_FC4)
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: EIP is at grab_swap_token+0x35/0x21f
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: eax: 0bd48023 ebx: d831d028 ecx: 00000282 edx: 00000000
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: esi: c1b72934 edi: c1045820 ebp: c1b703f0 esp: c18dbdd8
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: ds: 007b es: 007b ss: 0068
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Process events/0 (pid: 3, threadinfo=c18db000 task=f7e62000)
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: Stack: 000011a8 00000000 000011a8 c1b703f0 c0151731 c016f58f 000011a8 c1b72934
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: 000011a8 c0166415 c1b72934 c1b72934 c0163768 ee7ccc38 f459fbf8 bf92e7b8
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: f6c6a934 c0103b92 bfdaba18 c1b703f0 00000001 c1b81bfc c1b72934 bfdaba18
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: Call Trace:
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0151731>] find_get_page+0x9/0x24
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c016f58f>] read_swap_cache_async+0x32/0x83Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0166415>] do_swap_page+0x262/0x600
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0163768>] pte_alloc_map+0xc6/0x1e6
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0103b92>] common_interrupt+0x1a/0x20
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c01673f0>] handle_mm_fault+0x1da/0x31d
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c016488e>] __follow_page+0xa2/0x10d
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0164a6f>] get_user_pages+0x145/0x6ee
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0161f66>] kmap_high+0x52/0x44e
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0103b92>] common_interrupt+0x1a/0x20
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<f8cbb19d>] x_access_process_vm+0x111/0x1a5 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb24a>] read_user_space+0x19/0x1d [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb293>] read_frame+0x35/0x51 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb33a>] generate_stack_trace+0x8b/0xb4
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb3a2>] do_generate+0x3f/0xa0 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0138d7a>] worker_thread+0x1b0/0x450
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0379ccd>] schedule+0x30d/0x780
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c011bdb6>] __wake_up_common+0x39/0x59
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb363>] do_generate+0x0/0xa0 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c011bd71>] default_wake_function+0x0/0xc
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0138bca>] worker_thread+0x0/0x450
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c013f3cb>] kthread+0x87/0x8b
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c013f344>] kthread+0x0/0x8b
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0101275>] kernel_thread_helper+0x5/0xb
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: Code: e0 8b 00 8b 50 74 8b 1d c4 55 3d c0 39
|
||||
da 0f 84 9b 01 00 00 a1 60 fc 3c c0 39 05 30 ec 48 c0 78 05 83 c4 20 5b c3 a1 60 fc 3c c0 <3b> 82 b8 01 00 00 78 ee 81 3d ac 55 3d c0 3c 4b 24 1d 0f 85 78
|
||||
|
||||
- Hopefully the oops at the end of this file is gone now that
|
||||
we use mmput/get_task_mm. For older kernels those symbols
|
||||
are not exported though, so we will probably have to either
|
||||
use the old way (directly accessing the mm's) or just not
|
||||
support those kernels.
|
||||
|
||||
* Interface
|
||||
- If the current profile has a name, display it in the title bar
|
||||
@ -338,3 +295,49 @@ It is possible that we simply need a better concept of Process:
|
||||
- autoexpand descendant tree
|
||||
- make double clicks work
|
||||
- fix leaks
|
||||
|
||||
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Unable to handle kernel NULL pointer dereference at virtual address 000001b8
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: printing eip:
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: c017342c
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: *pde = 00000000
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Oops: 0000 [#1]
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Modules linked in: sysprof_module(U) i2c_algo_bit md5 ipv6 parport_pc lp parport autofs4 sunrpc video button battery ac ohci1394 ieee1394 uhci_hcd ehci_hcd hw_random tpm_atmel tpm i2c_i801 i2c_core snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc e1000 floppy dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod ata_piix libata sd_mod scsi_mod
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: CPU: 0
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: EIP: 0060:[<c017342c>] Not tainted VLI
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: EFLAGS: 00010287 (2.6.11-1.1225_FC4)
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: EIP is at grab_swap_token+0x35/0x21f
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: eax: 0bd48023 ebx: d831d028 ecx: 00000282 edx: 00000000
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: esi: c1b72934 edi: c1045820 ebp: c1b703f0 esp: c18dbdd8
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: ds: 007b es: 007b ss: 0068
|
||||
Apr 11 15:42:08 great-sage-equal-to-heaven kernel: Process events/0 (pid: 3, threadinfo=c18db000 task=f7e62000)
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: Stack: 000011a8 00000000 000011a8 c1b703f0 c0151731 c016f58f 000011a8 c1b72934
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: 000011a8 c0166415 c1b72934 c1b72934 c0163768 ee7ccc38 f459fbf8 bf92e7b8
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: f6c6a934 c0103b92 bfdaba18 c1b703f0 00000001 c1b81bfc c1b72934 bfdaba18
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: Call Trace:
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0151731>] find_get_page+0x9/0x24
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c016f58f>] read_swap_cache_async+0x32/0x83Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0166415>] do_swap_page+0x262/0x600
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0163768>] pte_alloc_map+0xc6/0x1e6
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0103b92>] common_interrupt+0x1a/0x20
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c01673f0>] handle_mm_fault+0x1da/0x31d
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c016488e>] __follow_page+0xa2/0x10d
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0164a6f>] get_user_pages+0x145/0x6ee
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0161f66>] kmap_high+0x52/0x44e
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<c0103b92>] common_interrupt+0x1a/0x20
|
||||
Apr 11 15:42:09 great-sage-equal-to-heaven kernel: [<f8cbb19d>] x_access_process_vm+0x111/0x1a5 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb24a>] read_user_space+0x19/0x1d [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb293>] read_frame+0x35/0x51 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb33a>] generate_stack_trace+0x8b/0xb4
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb3a2>] do_generate+0x3f/0xa0 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0138d7a>] worker_thread+0x1b0/0x450
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0379ccd>] schedule+0x30d/0x780
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c011bdb6>] __wake_up_common+0x39/0x59
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<f8cbb363>] do_generate+0x0/0xa0 [sysprof_module]
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c011bd71>] default_wake_function+0x0/0xc
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0138bca>] worker_thread+0x0/0x450
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c013f3cb>] kthread+0x87/0x8b
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c013f344>] kthread+0x0/0x8b
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: [<c0101275>] kernel_thread_helper+0x5/0xb
|
||||
Apr 11 15:42:10 great-sage-equal-to-heaven kernel: Code: e0 8b 00 8b 50 74 8b 1d c4 55 3d c0 39
|
||||
da 0f 84 9b 01 00 00 a1 60 fc 3c c0 39 05 30 ec 48 c0 78 05 83 c4 20 5b c3 a1 60 fc 3c c0 <3b> 82 b8 01 00 00 78 ee 81 3d ac 55 3d c0 3c 4b 24 1d 0f 85 78
|
||||
|
||||
|
||||
@ -76,9 +76,7 @@ init_userspace_reader (userspace_reader *reader,
|
||||
reader->page = NULL;
|
||||
}
|
||||
|
||||
/* This is mostly cutted and pasted from ptrace.c
|
||||
* I removed some locking and stuff though. I hope it
|
||||
* wasn't important.
|
||||
/* This function was mostly cutted and pasted from ptrace.c
|
||||
*/
|
||||
|
||||
/* Access another process' address space.
|
||||
@ -94,7 +92,14 @@ x_access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int
|
||||
struct page *page;
|
||||
void *old_buf = buf;
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
|
||||
task_lock (tsk);
|
||||
mm = tsk->mm;
|
||||
task_unlock (tsk);
|
||||
#else
|
||||
mm = get_task_mm (tsk);
|
||||
#endif
|
||||
|
||||
if (!mm)
|
||||
return 0;
|
||||
|
||||
@ -115,7 +120,7 @@ x_access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int
|
||||
bytes = PAGE_SIZE-offset;
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,11)
|
||||
|
||||
|
||||
flush_cache_page(vma, addr);
|
||||
|
||||
#endif
|
||||
@ -136,6 +141,10 @@ x_access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int
|
||||
addr += bytes;
|
||||
}
|
||||
up_read(&mm->mmap_sem);
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,9)
|
||||
mmput(mm);
|
||||
#endif
|
||||
|
||||
return buf - old_buf;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user