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Wed, 16 Oct 2024 08:51:08 +0000 Date: Wed, 16 Oct 2024 16:50:56 +0800 From: kernel test robot To: Lorenzo Stoakes CC: , , , Christian Brauner , Shuah Khan , "Liam R . 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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.stoakes@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 | Closes: https://lore.kernel.org/oe-lkp/202410161634.abca3854-lkp@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 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] [ 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-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki