[Bug 2044256] [NEW] valgrind crashes with "insufficient stack sapce" on armhf

Wed Nov 22 11:07:04 UTC 2023

Public bug reported:

Valgrind is unusable on armhf (at least when hosted inside qemu):
```
root at autopkgtest:~# valgrind
[ 1030.480535] Insufficient stack space to handle exception!
[ 1030.480583] Task stack:     [0xf0b40000..0xf0b42000]
[ 1030.480708] IRQ stack:      [0xf0800000..0xf0802000]
[ 1030.480751] Overflow stack: [0xc2d73000..0xc2d74000]
[ 1030.480800] Internal error: kernel stack overflow: 0 [#4] SMP ARM
[ 1030.480857] Modules linked in: cfg80211 binfmt_misc nls_iso8859_1 uio_pdrv_genirq uio dm_multipath drm efi_pstore dmi_sysfs ip_tables x_tables autofs4 btrfs blake2b_neon blake2b_generic xor xor_neon raid6_pq libcrc32c gpio_keys
[ 1030.481165] CPU: 0 PID: 820 Comm: memcheck-arm-li Tainted: G      D            6.5.0-9-generic #9-Ubuntu
[ 1030.481238] Hardware name: QEMU QEMU Virtual Machine, BIOS 2023.05-2 09/23/2023
[ 1030.481293] PC is at vfp_entry+0x70/0x98
[ 1030.481351] LR is at vfp_entry+0x58/0x98
[ 1030.481409] pc : [<c040473c>]    lr : [<c0404724>]    psr: 60000013
[ 1030.481460] sp : ffffffe8  ip : 00000000  fp : 00000000
[ 1030.481512] r10: dd100bf8  r9 : c0401138  r8 : f2000000
[ 1030.481568] r7 : 00000001  r6 : 00000001  r5 : 00000000  r4 : f3044f54
[ 1030.481623] r3 : 00000000  r2 : 00000000  r1 : 00000000  r0 : 00000000
[ 1030.481675] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[ 1030.481732] Control: 30c5387d  Table: 5e1b8540  DAC: 00000001
[ 1030.481777] Register r0 information: NULL pointer
[ 1030.481832] Register r1 information: NULL pointer
[ 1030.481880] Register r2 information: NULL pointer
[ 1030.481929] Register r3 information: NULL pointer
[ 1030.481978] Register r4 information: vmalloc memory
[ 1030.482028] Register r5 information: NULL pointer
[ 1030.482076] Register r6 information: non-paged memory
[ 1030.482124] Register r7 information: non-paged memory
[ 1030.482173] Register r8 information: vmalloc memory
[ 1030.482220] Register r9 information: non-slab/vmalloc memory
[ 1030.482276] Register r10 information: slab task_struct start dd100b00 pointer offset 248 size 2816
[ 1030.482405] Register r11 information: NULL pointer
[ 1030.482461] Register r12 information: NULL pointer
[ 1030.482516] Process memcheck-arm-li (pid: 820, stack limit = 0x10cb5b25)
[ 1030.482577] Stack: (0xffffffe8 to 0x00002000)
[ 1030.482622] Backtrace: no frame pointer
[ 1030.482689] Code: e3a01000 e3a02000 e3a03000 e3a0c000 (e89da870) 
[ 1030.482753] ---[ end trace 0000000000000000 ]---
[ 1032.427908] note: memcheck-arm-li[820] exited with irqs disabled
Segmentation fault
```

ulimit -s has no effect on this.

** Affects: valgrind (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2044256

Title:
  valgrind crashes with "insufficient stack sapce" on armhf

Status in valgrind package in Ubuntu:
  New

Bug description:
  Valgrind is unusable on armhf (at least when hosted inside qemu):
  ```
  root at autopkgtest:~# valgrind
  [ 1030.480535] Insufficient stack space to handle exception!
  [ 1030.480583] Task stack:     [0xf0b40000..0xf0b42000]
  [ 1030.480708] IRQ stack:      [0xf0800000..0xf0802000]
  [ 1030.480751] Overflow stack: [0xc2d73000..0xc2d74000]
  [ 1030.480800] Internal error: kernel stack overflow: 0 [#4] SMP ARM
  [ 1030.480857] Modules linked in: cfg80211 binfmt_misc nls_iso8859_1 uio_pdrv_genirq uio dm_multipath drm efi_pstore dmi_sysfs ip_tables x_tables autofs4 btrfs blake2b_neon blake2b_generic xor xor_neon raid6_pq libcrc32c gpio_keys
  [ 1030.481165] CPU: 0 PID: 820 Comm: memcheck-arm-li Tainted: G      D            6.5.0-9-generic #9-Ubuntu
  [ 1030.481238] Hardware name: QEMU QEMU Virtual Machine, BIOS 2023.05-2 09/23/2023
  [ 1030.481293] PC is at vfp_entry+0x70/0x98
  [ 1030.481351] LR is at vfp_entry+0x58/0x98
  [ 1030.481409] pc : [<c040473c>]    lr : [<c0404724>]    psr: 60000013
  [ 1030.481460] sp : ffffffe8  ip : 00000000  fp : 00000000
  [ 1030.481512] r10: dd100bf8  r9 : c0401138  r8 : f2000000
  [ 1030.481568] r7 : 00000001  r6 : 00000001  r5 : 00000000  r4 : f3044f54
  [ 1030.481623] r3 : 00000000  r2 : 00000000  r1 : 00000000  r0 : 00000000
  [ 1030.481675] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
  [ 1030.481732] Control: 30c5387d  Table: 5e1b8540  DAC: 00000001
  [ 1030.481777] Register r0 information: NULL pointer
  [ 1030.481832] Register r1 information: NULL pointer
  [ 1030.481880] Register r2 information: NULL pointer
  [ 1030.481929] Register r3 information: NULL pointer
  [ 1030.481978] Register r4 information: vmalloc memory
  [ 1030.482028] Register r5 information: NULL pointer
  [ 1030.482076] Register r6 information: non-paged memory
  [ 1030.482124] Register r7 information: non-paged memory
  [ 1030.482173] Register r8 information: vmalloc memory
  [ 1030.482220] Register r9 information: non-slab/vmalloc memory
  [ 1030.482276] Register r10 information: slab task_struct start dd100b00 pointer offset 248 size 2816
  [ 1030.482405] Register r11 information: NULL pointer
  [ 1030.482461] Register r12 information: NULL pointer
  [ 1030.482516] Process memcheck-arm-li (pid: 820, stack limit = 0x10cb5b25)
  [ 1030.482577] Stack: (0xffffffe8 to 0x00002000)
  [ 1030.482622] Backtrace: no frame pointer
  [ 1030.482689] Code: e3a01000 e3a02000 e3a03000 e3a0c000 (e89da870) 
  [ 1030.482753] ---[ end trace 0000000000000000 ]---
  [ 1032.427908] note: memcheck-arm-li[820] exited with irqs disabled
  Segmentation fault
  ```

  ulimit -s has no effect on this.

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