if i try fuser -c /usr i got kerenl oops: EIP: [<c041045f>] SS:ESP 0068:ed1dfe80 Code: 04 24 8b 44 24 0c e8 b2 95 ff ff 8b 4c 24 0c 8b 44 24 10 83 c4 1c 5b 5e 5f 89 ea 5d e9 6b ca 19 00 90 90 90 8b 08 8b 50 04 31 c0 <3b> 91 7c 01 00 00 ba d7 b0 76 c0 0f 44 c2 c3 8b 90 98 00 00 00 [<c0482a42>] <0> [<c046b696>] <0> [<c046b4f5>] <0> [<c045582a>] <0> [<c0455c02>] <0> [<c0403e8d>] <0> ======================= Call Trace: 00000000 00000070 fffff000 dfb45a90 00000000 00000000 00000000 00000028 00000070 00000000 00000000 00000000 00000000 ed1dfedc 00000000 ed72c260 Stack: c0482a42 ed72c260 c0770a5f ffffe000 fffff000 00000072 0000002d 00000078 Process fuser (pid: 18602, ti=ed1de000 task=f6f18580 task.ti=ed1de000) ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 esi: 00000000 edi: c082300c ebp: 00000078 esp: ed1dfe80 eax: 00000000 ebx: ffffe000 ecx: 00000000 edx: ffffe000 EFLAGS: 00010246 (2.6.22-hardened-r2 #1) EIP: 0060:[<c041045f>] Tainted: PF VLI CPU: 0 SMP Oops: 0000 [#15] *pde = 00000000 printing eip: BUG: unable to handle kernel NULL pointer dereference at virtual address 0000017c Reproducible: Always Steps to Reproduce: 1. Running system with >=hardened-sources-2.6.22 2. Try the fuser -c /usr (fuser (PSmisc) 22.5)
Created attachment 129135 [details] My kernel config
This is not a userrel bug and does not need to be restricted.
(In reply to comment #0) > if i try fuser -c /usr i got kerenl oops: > EIP: [<c041045f>] SS:ESP 0068:ed1dfe80 > Code: 04 24 8b 44 24 0c e8 b2 95 ff ff 8b 4c 24 0c 8b 44 24 10 83 c4 1c 5b 5e > 5f 89 ea 5d e9 6b ca 19 00 90 90 90 8b 08 8b 50 04 31 c0 <3b> 91 7c 01 00 00 ba > d7 b0 76 c0 0f 44 c2 c3 8b 90 98 00 00 00 > [<c0482a42>] <0> [<c046b696>] <0> [<c046b4f5>] <0> [<c045582a>] <0> > [<c0455c02>] <0> [<c0403e8d>] <0> ======================= > Call Trace: > 00000000 00000070 fffff000 dfb45a90 00000000 00000000 00000000 00000028 > 00000070 00000000 00000000 00000000 00000000 ed1dfedc 00000000 ed72c260 > Stack: c0482a42 ed72c260 c0770a5f ffffe000 fffff000 00000072 0000002d 00000078 > Process fuser (pid: 18602, ti=ed1de000 task=f6f18580 task.ti=ed1de000) > ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 > esi: 00000000 edi: c082300c ebp: 00000078 esp: ed1dfe80 > eax: 00000000 ebx: ffffe000 ecx: 00000000 edx: ffffe000 > EFLAGS: 00010246 (2.6.22-hardened-r2 #1) > EIP: 0060:[<c041045f>] Tainted: PF VLI > CPU: 0 > SMP > Oops: 0000 [#15] > *pde = 00000000 > printing eip: > BUG: unable to handle kernel NULL pointer dereference at virtual address > 0000017c Try upgrading to hardened-sources-2.6.22-r3.
I tried with 2.6.22-hardened-r3 version and it's the same. The same error is also when I try 'cat /proc/pid/maps' or 'cat /proc/pid/smaps'. For example: hell ~ # cat /proc/1/maps BUG: unable to handle kernel NULL pointer dereference at virtual address 0000017c printing eip: c0410517 *pde = 00000000 Oops: 0000 [#3] SMP Modules linked in: w83627hf eeprom w83781d hwmon_vid wlan_ccmp wlan_xauth ipv6 ipt_MASQUERADE ipt_REDIRECT iptable_nat nf_nat iptable_mangle ipt_REJECT ipt_ipp2p nf_conntrack_ipv4 xt_state nf_conntrack iptable_filter ip_tables ndiswrapper wlan_scan_ap ath_rate_sample(F) ath_pci(F) wlan ath_hal(P) i2c_amd756 amd_rng rng_core rtc CPU: 0 EIP: 0060:[<c0410517>] Tainted: PF VLI EFLAGS: 00010246 (2.6.22-hardened-r3 #2) eax: 00000000 ebx: 00000078 ecx: 00000000 edx: ffffe000 esi: 00000070 edi: 00000001 ebp: c0809010 esp: cc833e64 ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 Process cat (pid: 20133, ti=cc832000 task=ea3c0a90 task.ti=cc832000) Stack: c04829f5 d0da2220 c075b30d ffffe000 fffff000 00000072 0000002d 00000078 00000070 00000000 00000000 00000000 00000000 cc833ebc 00000000 d0da2220 00000000 c2179a90 00000000 00000000 00000000 00000000 00000028 c07cbf20 Call Trace: [<c04829f5>] <0> [<c046b6aa>] <0> [<c046b509>] <0> [<c04557ee>] <0> [<c0455bc6>] <0> [<c0403e8d>] <0> ======================= Code: 04 24 8b 44 24 0c e8 fa 94 ff ff 8b 4c 24 0c 8b 44 24 10 83 c4 1c 5b 5e 5f 89 ea 5d e9 53 c7 19 00 90 90 90 8b 08 8b 50 04 31 c0 <3b> 91 7c 01 00 00 ba 96 59 75 c0 0f 44 c2 c3 8b 90 98 00 00 00 EIP: [<c0410517>] SS:ESP 0068:cc833e64 Segmentation fault. I tried to run kernel with and without options: 'Remove addresses from /proc/<pid>/[smaps|maps|stat]', but there is no difference. I will try with vanilla sources. I think that is a kernel's bug.
On vanilla sources I haven't error. Mayby it's grsecurity bug. I will try fix it.
(In reply to comment #4) > I tried with 2.6.22-hardened-r3 version and it's the same. The same error is > also when I try 'cat /proc/pid/maps' or 'cat /proc/pid/smaps'. For example: > > hell ~ # cat /proc/1/maps > BUG: unable to handle kernel NULL pointer dereference at virtual address > 0000017c > printing eip: > c0410517 > *pde = 00000000 > Oops: 0000 [#3] > SMP > Modules linked in: w83627hf eeprom w83781d hwmon_vid wlan_ccmp wlan_xauth ipv6 > ipt_MASQUERADE ipt_REDIRECT iptable_nat nf_nat iptable_mangle ipt_REJECT > ipt_ipp2p nf_conntrack_ipv4 xt_state nf_conntrack iptable_filter ip_tables > ndiswrapper wlan_scan_ap ath_rate_sample(F) ath_pci(F) wlan ath_hal(P) > i2c_amd756 amd_rng rng_core rtc > CPU: 0 > EIP: 0060:[<c0410517>] Tainted: PF VLI > EFLAGS: 00010246 (2.6.22-hardened-r3 #2) > eax: 00000000 ebx: 00000078 ecx: 00000000 edx: ffffe000 > esi: 00000070 edi: 00000001 ebp: c0809010 esp: cc833e64 > ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 > Process cat (pid: 20133, ti=cc832000 task=ea3c0a90 task.ti=cc832000) > Stack: c04829f5 d0da2220 c075b30d ffffe000 fffff000 00000072 0000002d 00000078 > 00000070 00000000 00000000 00000000 00000000 cc833ebc 00000000 d0da2220 > 00000000 c2179a90 00000000 00000000 00000000 00000000 00000028 c07cbf20 > Call Trace: > [<c04829f5>] <0> [<c046b6aa>] <0> [<c046b509>] <0> [<c04557ee>] <0> > [<c0455bc6>] <0> [<c0403e8d>] <0> ======================= > Code: 04 24 8b 44 24 0c e8 fa 94 ff ff 8b 4c 24 0c 8b 44 24 10 83 c4 1c 5b 5e > 5f 89 ea 5d e9 53 c7 19 00 90 90 90 8b 08 8b 50 04 31 c0 <3b> 91 7c 01 00 00 ba > 96 59 75 c0 0f 44 c2 c3 8b 90 98 00 00 00 > EIP: [<c0410517>] SS:ESP 0068:cc833e64 > Segmentation fault. Apparently this is related to #194276, so I'd like to advise you to go and test hardened-sources-2.6.22-r7. Please reopen the bug if that isn't fixing your problem/issue.
