Hello,
kernel test robot noticed "BUG:unable_to_handle_page_fault_for_address" on:
commit: e65dbb5c9051a4da2305787fd558e1d60de2275a ("[PATCH v2 1/3] pidfd: extend
pidfd_get_pid() and de-duplicate pid lookup")
url:
https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Stoakes/pidfd-extend-pidfd_get_pid-and-de-duplicate-pid-lookup/20241011-191241
base: https://git.kernel.org/cgit/linux/kernel/git/shuah/linux-kselftest.git
next
patch link:
https://lore.kernel.org/all/8e7edaf2f648fb01a71def749f17f76c0502dee1.1728643714.git.lorenzo.stoa...@oracle.com/
patch subject: [PATCH v2 1/3] pidfd: extend pidfd_get_pid() and de-duplicate
pid lookup
in testcase: trinity
version: trinity-i386-abe9de86-1_20230429
with following parameters:
runtime: 600s
config: x86_64-randconfig-072-20241015
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.s...@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202410161634.abca3854-...@intel.com
[ 416.054386][ T1959] BUG: unable to handle page fault for address:
ffffffff8fed9474
[ 416.055651][ T1959] #PF: supervisor write access in kernel mode
[ 416.056550][ T1959] #PF: error_code(0x0003) - permissions violation
[ 416.057502][ T1959] PGD 3e90f5067 P4D 3e90f5067 PUD 3e90f6063 PMD 3e50001a1
[ 416.058587][ T1959] Oops: Oops: 0003 [#1] PREEMPT SMP KASAN
[ 416.059414][ T1959] CPU: 1 UID: 65534 PID: 1959 Comm: trinity-c3 Not tainted
6.12.0-rc1-00004-ge65dbb5c9051 #1 d7a38916ac9252f968706afc2c77f70fbdabe689
[ 416.061328][ T1959] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 416.062850][ T1959] RIP: 0010:fput (arch/x86/include/asm/atomic64_64.h:61
include/linux/atomic/atomic-arch-fallback.h:4404
include/linux/atomic/atomic-long.h:1571
include/linux/atomic/atomic-instrumented.h:4540 fs/file_table.c:482)
[ 416.063578][ T1959] Code: ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3
0f 1e fa 55 48 89 e5 41 55 41 54 53 48 89 fb be 08 00 00 00 e8 96 c6 f7 ff <f0>
48 ff 0b 0f 85 dd 00 00 00 65 4c 8b 25 04 ff 0e 70 4c 8d 6b 48
All code
========
0: ff (bad)
1: ff 66 66 jmp *0x66(%rsi)
4: 2e 0f 1f 84 00 00 00 cs nopl 0x0(%rax,%rax,1)
b: 00 00
d: 0f 1f 00 nopl (%rax)
10: f3 0f 1e fa endbr64
14: 55 push %rbp
15: 48 89 e5 mov %rsp,%rbp
18: 41 55 push %r13
1a: 41 54 push %r12
1c: 53 push %rbx
1d: 48 89 fb mov %rdi,%rbx
20: be 08 00 00 00 mov $0x8,%esi
25: e8 96 c6 f7 ff call 0xfffffffffff7c6c0
2a:* f0 48 ff 0b lock decq (%rbx) <-- trapping
instruction
2e: 0f 85 dd 00 00 00 jne 0x111
34: 65 4c 8b 25 04 ff 0e mov %gs:0x700eff04(%rip),%r12 #
0x700eff40
3b: 70
3c: 4c 8d 6b 48 lea 0x48(%rbx),%r13
Code starting with the faulting instruction
===========================================
0: f0 48 ff 0b lock decq (%rbx)
4: 0f 85 dd 00 00 00 jne 0xe7
a: 65 4c 8b 25 04 ff 0e mov %gs:0x700eff04(%rip),%r12 #
0x700eff16
11: 70
12: 4c 8d 6b 48 lea 0x48(%rbx),%r13
[ 416.066250][ T1959] RSP: 0018:ffffc9000299fa70 EFLAGS: 00010246
[ 416.067156][ T1959] RAX: 0000000000000001 RBX: ffffffff8fed9474 RCX:
0000000000000000
[ 416.068377][ T1959] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[ 416.069091][ T1980] module: module-autoload: duplicate request for module
net-pf-12
[ 416.069532][ T1959] RBP: ffffc9000299fa88 R08: 0000000000000000 R09:
0000000000000000
[ 416.069538][ T1959] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[ 416.069541][ T1959] R13: fffffffffffffff7 R14: ffffc9000299fb70 R15:
dffffc0000000000
[ 416.078460][ T1959] FS: 0000000000000000(0000) GS:ffff8883a8500000(0063)
knlGS:00000000f7ef8280
[ 416.079775][ T1959] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
[ 416.080740][ T1959] CR2: ffffffff8fed9474 CR3: 0000000120fe6000 CR4:
00000000000406f0
[ 416.081938][ T1959] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 416.083156][ T1959] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 416.084359][ T1959] Call Trace:
[ 416.084939][ T1959] <TASK>
[ 416.085461][ T1959] ? show_regs (arch/x86/kernel/dumpstack.c:479)
[ 416.088241][ T1964] module: module-autoload: duplicate request for module
net-pf-32
[ 416.089149][ T1959] ? __die (arch/x86/kernel/dumpstack.c:421
arch/x86/kernel/dumpstack.c:434)
[ 416.089165][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:31)
[ 416.089175][ T1959] ? page_fault_oops (arch/x86/mm/fault.c:710)
[ 416.092872][ T1959] ? fput (arch/x86/include/asm/atomic64_64.h:61
include/linux/atomic/atomic-arch-fallback.h:4404
include/linux/atomic/atomic-long.h:1571
include/linux/atomic/atomic-instrumented.h:4540 fs/file_table.c:482)
[ 416.093516][ T1959] ? show_fault_oops (arch/x86/mm/fault.c:643)
[ 416.094304][ T1959] ? fput (arch/x86/include/asm/atomic64_64.h:61
include/linux/atomic/atomic-arch-fallback.h:4404
include/linux/atomic/atomic-long.h:1571
include/linux/atomic/atomic-instrumented.h:4540 fs/file_table.c:482)
[ 416.094957][ T1959] ? search_exception_tables (kernel/extable.c:64)
[ 416.095760][ T1959] ? fixup_exception (arch/x86/mm/extable.c:320)
[ 416.096496][ T1959] ? validate_chain (arch/x86/include/asm/bitops.h:227
arch/x86/include/asm/bitops.h:239
include/asm-generic/bitops/instrumented-non-atomic.h:142
kernel/locking/lockdep.c:228 kernel/locking/lockdep.c:3816
kernel/locking/lockdep.c:3872)
[ 416.097269][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:31)
[ 416.098069][ T1959] ? kernelmode_fixup_or_oops+0x84/0xb0
[ 416.099036][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:31)
[ 416.099822][ T1959] ? __bad_area_nosemaphore (arch/x86/mm/fault.c:828)
[ 416.100680][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:32)
[ 416.101464][ T1959] ? check_prev_add (kernel/locking/lockdep.c:3860)
[ 416.102255][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:31)
[ 416.103036][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:31)
[ 416.103805][ T1959] ? bad_area_nosemaphore (arch/x86/mm/fault.c:835)
[ 416.104574][ T1959] ? do_kern_addr_fault (arch/x86/mm/fault.c:862
arch/x86/mm/fault.c:881)
[ 416.105445][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:31)
[ 416.106242][ T1959] ? do_kern_addr_fault (arch/x86/mm/fault.c:1199)
[ 416.107023][ T1959] ? exc_page_fault (arch/x86/mm/fault.c:1479
arch/x86/mm/fault.c:1539)
[ 416.107781][ T1959] ? asm_exc_page_fault
(arch/x86/include/asm/idtentry.h:623)
[ 416.108538][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:31)
[ 416.109332][ T1959] ? fput (arch/x86/include/asm/atomic64_64.h:61
include/linux/atomic/atomic-arch-fallback.h:4404
include/linux/atomic/atomic-long.h:1571
include/linux/atomic/atomic-instrumented.h:4540 fs/file_table.c:482)
[ 416.110003][ T1959] __do_sys_pidfd_send_signal (kernel/signal.c:3968)
[ 416.110881][ T1959] ? copy_siginfo_from_user32 (kernel/signal.c:3898)
[ 416.111737][ T1959] ? __kasan_check_read (mm/kasan/shadow.c:32)
[ 416.112533][ T1959] ? check_prev_add (kernel/locking/lockdep.c:3860)
[ 416.113327][ T1959] __ia32_sys_pidfd_send_signal (kernel/signal.c:3896)
[ 416.115877][ T1959] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:63
(discriminator 22))
[ 416.116669][ T1959] ia32_sys_call (arch/x86/entry/syscall_32.c:44)
[ 416.117417][ T1959] __do_fast_syscall_32 (arch/x86/entry/common.c:165
arch/x86/entry/common.c:386)
[ 416.118224][ T1959] ? __lock_acquire (kernel/locking/lockdep.c:5202)
[ 416.119009][ T1959] ? __task_pid_nr_ns (include/linux/rcupdate.h:337
include/linux/rcupdate.h:849 kernel/pid.c:511)
[ 416.119778][ T1959] ? lock_acquire (include/trace/events/lock.h:24
kernel/locking/lockdep.c:5796)
[ 416.120563][ T1959] ? __task_pid_nr_ns (include/linux/rcupdate.h:337
include/linux/rcupdate.h:849 kernel/pid.c:511)
[ 416.121348][ T1959] ? find_held_lock (kernel/locking/lockdep.c:5315)
[ 416.122114][ T1959] ? __lock_release+0x100/0x530
[ 416.122949][ T1959] ? __task_pid_nr_ns (include/linux/rcupdate.h:347
include/linux/rcupdate.h:880 kernel/pid.c:515)
[ 416.123737][ T1959] ? reacquire_held_locks (kernel/locking/lockdep.c:5476)
[ 416.124570][ T1959] ? __task_pid_nr_ns (include/linux/rcupdate.h:347
include/linux/rcupdate.h:880 kernel/pid.c:515)
[ 416.125359][ T1959] ? syscall_exit_to_user_mode
(include/linux/entry-common.h:321 kernel/entry/common.c:207
kernel/entry/common.c:218)
[ 416.126234][ T1959] ? syscall_exit_to_user_mode (kernel/entry/common.c:221)
[ 416.127090][ T1959] ? __do_fast_syscall_32 (arch/x86/entry/common.c:390)
[ 416.127922][ T1959] ? syscall_exit_to_user_mode (kernel/entry/common.c:221)
[ 416.128760][ T1959] ? __do_fast_syscall_32 (arch/x86/entry/common.c:390)
[ 416.129599][ T1959] ? __do_fast_syscall_32 (arch/x86/entry/common.c:390)
[ 416.130419][ T1959] do_fast_syscall_32 (arch/x86/entry/common.c:411)
[ 416.131158][ T1959] do_SYSENTER_32 (arch/x86/entry/common.c:450)
[ 416.131840][ T1959] entry_SYSENTER_compat_after_hwframe
(arch/x86/entry/entry_64_compat.S:127)
[ 416.132788][ T1959] RIP: 0023:0xf7efd579
[ 416.133446][ T1959] Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03
74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d>
5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
All code
========
0: b8 01 10 06 03 mov $0x3061001,%eax
5: 74 b4 je 0xffffffffffffffbb
7: 01 10 add %edx,(%rax)
9: 07 (bad)
a: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
e: 10 08 adc %cl,(%rax)
10: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
...
20: 00 51 52 add %dl,0x52(%rcx)
23: 55 push %rbp
24:* 89 e5 mov %esp,%ebp <-- trapping
instruction
26: 0f 34 sysenter
28: cd 80 int $0x80
2a: 5d pop %rbp
2b: 5a pop %rdx
2c: 59 pop %rcx
2d: c3 ret
2e: 90 nop
2f: 90 nop
30: 90 nop
31: 90 nop
32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
Code starting with the faulting instruction
===========================================
0: 5d pop %rbp
1: 5a pop %rdx
2: 59 pop %rcx
3: c3 ret
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
f: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241016/202410161634.abca3854-...@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
