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X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:SOFTIRQ-safe->SOFTIRQ-unsafe_lock_order_detected" on: commit: f13aa632a53dc3aa2ec1a81dfbf3e52c0c26bfcd ("lib/vsprintf: Validate spinlock context during restricted pointer formatting") https://git.kernel.org/cgit/linux/kernel/git/thomas.weissschuh/linux.git b4/restricted-pointers-final in testcase: trinity version: trinity-i386-abe9de86-1_20230429 with following parameters: runtime: 300s group: group-00 nr_groups: 5 config: i386-randconfig-013-20260610 compiler: clang-22 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G (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/202606110945.d3871219-lkp@intel.com [ 92.648940][ T3827] [ 92.649789][ T3827] ===================================================== [ 92.651543][ T3827] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 92.653758][ T3827] 7.0.0-12214-gf13aa632a53d #1 Tainted: G T [ 92.656006][ T3827] ----------------------------------------------------- [ 92.659102][ T3827] trinity-c1/3827 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 92.674723][ T3827] 83aad874 (vsprintf_restricted_pointer_map-wait-type-assert){+.+.}-{3:3}, at: class_lock_map_acquire_constructor (linux/lockdep.h:557) [ 92.681173][ T3827] [ 92.681173][ T3827] and this task is already holding: [ 92.681173][ T3827] [ 92.681173][ T3827] and this task is already holding: [ 92.681173][ T3827] [ 92.681173][ T3827] and this task is already holding: [ 92.689423][ T3827] 857d2130 (&ptr[i]){+.-.}-{3:3}, at: established_get_first (linux/spinlock.h:348 ipv4/tcp_ipv4.c:2574) [ 92.693323][ T3827] which would create a new lock dependency: [ 92.695966][ T3827] (&ptr[i]){+.-.}-{3:3} -> (vsprintf_restricted_pointer_map-wait-type-assert){+.+.}-{3:3} [ 92.700468][ T3827] [ 92.700468][ T3827] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 92.700468][ T3827] [ 92.700468][ T3827] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 92.700468][ T3827] [ 92.700468][ T3827] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 92.706011][ T3827] (&ptr[i]){+.-.}-{3:3} [ 92.706021][ T3827] [ 92.706021][ T3827] ... which became SOFTIRQ-irq-safe at: [ 92.706021][ T3827] [ 92.706021][ T3827] ... which became SOFTIRQ-irq-safe at: [ 92.706021][ T3827] [ 92.706021][ T3827] ... which became SOFTIRQ-irq-safe at: [ 92.711404][ T3827] lock_acquire (locking/lockdep.c:5868) [ 92.713447][ T3827] _raw_spin_lock (linux/spinlock_api_smp.h:158 locking/spinlock.c:158) [ 92.715506][ T3827] inet_twsk_hashdance_schedule (linux/spinlock.h:342 ipv4/inet_timewait_sock.c:135) [ 92.717585][ T3827] tcp_time_wait (ipv4/tcp_minisocks.c:383) [ 92.719017][ T3827] tcp_rcv_state_process (ipv4/tcp_input.c:?) [ 92.720696][ T3827] tcp_v4_do_rcv (ipv4/tcp_ipv4.c:1875) [ 92.722024][ T3827] tcp_v4_rcv (ipv4/tcp_ipv4.c:2246) [ 92.723180][ T3827] ip_protocol_deliver_rcu (ipv4/ip_input.c:207) [ 92.724843][ T3827] ip_local_deliver (ipv4/ip_input.c:241 (discriminator 1)) [ 92.726195][ T3827] ip_sublist_rcv_finish (net/dst.h:480 (discriminator 3)) [ 92.727531][ T3827] ip_sublist_rcv (ipv4/ip_input.c:675 ipv4/ip_input.c:683) [ 92.728958][ T3827] ip_list_rcv (ipv4/ip_input.c:717) [ 92.730196][ T3827] __netif_receive_skb_list_core (core/dev.c:6252 core/dev.c:6299) [ 92.731740][ T3827] netif_receive_skb_list_internal (core/dev.c:6351 (discriminator 256) core/dev.c:6442 (discriminator 256)) [ 92.733677][ T3827] napi_complete_done (net/gro.h:523 net/gro.h:531 core/dev.c:6810) [ 92.734992][ T3827] e1000_clean (net/ethernet/intel/e1000/e1000_main.c:3812) [ 92.736271][ T3827] __napi_poll (core/dev.c:7737) [ 92.737625][ T3827] net_rx_action (core/dev.c:7800) [ 92.738853][ T3827] handle_softirqs (softirq.c:622) [ 92.740184][ T3827] __do_softirq (softirq.c:656) [ 92.741505][ T3827] do_softirq_own_stack (x86/kernel/irq_32.c:56 x86/kernel/irq_32.c:144) [ 92.742870][ T3827] __irq_exit_rcu (softirq.c:503) [ 92.744135][ T3827] irq_exit_rcu (softirq.c:752) [ 92.745475][ T3827] common_interrupt (x86/kernel/irq.c:326 (discriminator 9)) [ 92.746728][ T3827] asm_common_interrupt (x86/include/asm/idtentry.h:688) [ 92.748137][ T3827] [ 92.748137][ T3827] to a SOFTIRQ-irq-unsafe lock: [ 92.748137][ T3827] [ 92.748137][ T3827] to a SOFTIRQ-irq-unsafe lock: [ 92.748137][ T3827] [ 92.748137][ T3827] to a SOFTIRQ-irq-unsafe lock: [ 92.750164][ T3827] (vsprintf_restricted_pointer_map-wait-type-assert){+.+.}-{3:3} [ 92.750168][ T3827] [ 92.750168][ T3827] ... which became SOFTIRQ-irq-unsafe at: [ 92.750168][ T3827] [ 92.750168][ T3827] ... which became SOFTIRQ-irq-unsafe at: [ 92.750168][ T3827] [ 92.750168][ T3827] ... which became SOFTIRQ-irq-unsafe at: [ 92.754551][ T3827] ... [ 92.754552][ T3827] lock_acquire (locking/lockdep.c:5868) [ 92.757345][ T3827] class_lock_map_acquire_constructor (linux/lockdep.h:557 (discriminator 1)) [ 92.759895][ T3827] restricted_pointer (vsprintf.c:874) [ 92.770231][ T3827] pointer (vsprintf.c:2582) [ 92.772166][ T3827] vsnprintf (vsprintf.c:2956) [ 92.774145][ T3827] seq_printf (seq_file.c:392 seq_file.c:407) [ 92.776083][ T3827] tcp6_seq_show (ipv6/tcp_ipv6.c:2147 (discriminator 1) ipv6/tcp_ipv6.c:2221 (discriminator 1)) [ 92.778212][ T3827] traverse (seq_file.c:112) [ 92.780125][ T3827] seq_lseek (seq_file.c:324 (discriminator 1)) [ 92.782106][ T3827] proc_reg_llseek (proc/inode.c:283) [ 92.789616][ T3827] __ia32_sys_lseek (read_write.c:391) [ 92.791786][ T3827] ia32_sys_call (kbuild/obj/consumer/i386-randconfig-013-20260610/./arch/x86/include/generated/asm/syscalls_32.h:20) [ 92.793792][ T3827] __do_fast_syscall_32 (x86/entry/syscall_32.c:83) [ 92.795973][ T3827] do_fast_syscall_32 (x86/entry/syscall_32.c:332) [ 92.797992][ T3827] do_SYSENTER_32 (x86/entry/syscall_32.c:370) [ 92.799987][ T3827] entry_SYSENTER_32 (x86/entry/entry_32.S:835) [ 92.802088][ T3827] [ 92.802088][ T3827] other info that might help us debug this: [ 92.802088][ T3827] [ 92.802088][ T3827] other info that might help us debug this: [ 92.802088][ T3827] [ 92.802088][ T3827] other info that might help us debug this: [ 92.802088][ T3827] [ 92.811748][ T3827] Possible interrupt unsafe locking scenario: [ 92.811748][ T3827] [ 92.811748][ T3827] Possible interrupt unsafe locking scenario: [ 92.811748][ T3827] [ 92.811748][ T3827] Possible interrupt unsafe locking scenario: [ 92.811748][ T3827] [ 92.815589][ T3827] CPU0 CPU1 [ 92.817489][ T3827] ---- ---- [ 92.819100][ T3827] lock(vsprintf_restricted_pointer_map-wait-type-assert); [ 92.821380][ T3827] local_irq_disable(); [ 92.823141][ T3827] lock(&ptr[i]); [ 92.824922][ T3827] lock(vsprintf_restricted_pointer_map-wait-type-assert); [ 92.827481][ T3827] [ 92.828503][ T3827] lock(&ptr[i]); [ 92.829677][ T3827] [ 92.829677][ T3827] *** DEADLOCK *** [ 92.829677][ T3827] [ 92.829677][ T3827] *** DEADLOCK *** [ 92.829677][ T3827] [ 92.829677][ T3827] *** DEADLOCK *** [ 92.829677][ T3827] [ 92.831788][ T3827] 3 locks held by trinity-c1/3827: [ 92.833367][ T3827] #0: f55743fc (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos (file.c:1261) [ 92.835457][ T3827] #1: f630d118 (&p->lock){+.+.}-{4:4}, at: seq_lseek (seq_file.c:314) [ 92.837697][ T3827] #2: 857d2130 (&ptr[i]){+.-.}-{3:3}, at: established_get_first (linux/spinlock.h:348 ipv4/tcp_ipv4.c:2574) [ 92.839918][ T3827] [ 92.839918][ T3827] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 92.839918][ T3827] [ 92.839918][ T3827] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 92.839918][ T3827] [ 92.839918][ T3827] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 92.842890][ T3827] -> (&ptr[i]){+.-.}-{3:3} { [ 92.844117][ T3827] HARDIRQ-ON-W at: [ 92.845349][ T3827] lock_acquire (locking/lockdep.c:5868) [ 92.846899][ T3827] _raw_spin_lock (linux/spinlock_api_smp.h:158 locking/spinlock.c:158) [ 92.848615][ T3827] inet_ehash_insert (linux/spinlock.h:342 ipv4/inet_hashtables.c:725) [ 92.850389][ T3827] inet_ehash_nolisten (ipv4/inet_hashtables.c:749) [ 92.852079][ T3827] __inet_hash_connect (ipv4/inet_hashtables.c:1212) [ 92.854087][ T3827] inet_hash_connect (ipv4/inet_hashtables.c:1275) [ 92.856206][ T3827] tcp_v4_connect (ipv4/tcp_ipv4.c:306) [ 92.858935][ T3827] __inet_stream_connect (ipv4/af_inet.c:684) [ 92.861901][ T3827] inet_stream_connect (ipv4/af_inet.c:755) [ 92.870137][ T3827] __sys_connect (socket.c:2148 (discriminator 3)) [ 92.872927][ T3827] __ia32_sys_socketcall (socket.c:3221 (discriminator 2)) [ 92.875995][ T3827] ia32_sys_call (kbuild/obj/consumer/i386-randconfig-013-20260610/./arch/x86/include/generated/asm/syscalls_32.h:103) [ 92.878789][ T3827] __do_fast_syscall_32 (x86/entry/syscall_32.c:83) [ 92.881825][ T3827] do_fast_syscall_32 (x86/entry/syscall_32.c:332) [ 92.886058][ T3827] do_SYSENTER_32 (x86/entry/syscall_32.c:370) [ 92.888741][ T3827] entry_SYSENTER_32 (x86/entry/entry_32.S:835) [ 92.891567][ T3827] IN-SOFTIRQ-W at: [ 92.893433][ T3827] lock_acquire (locking/lockdep.c:5868) [ 92.896112][ T3827] _raw_spin_lock (linux/spinlock_api_smp.h:158 locking/spinlock.c:158) [ 92.898846][ T3827] inet_twsk_hashdance_schedule (linux/spinlock.h:342 ipv4/inet_timewait_sock.c:135) [ 92.902176][ T3827] tcp_time_wait (ipv4/tcp_minisocks.c:383) [ 92.906283][ T3827] tcp_rcv_state_process (ipv4/tcp_input.c:?) [ 92.909378][ T3827] tcp_v4_do_rcv (ipv4/tcp_ipv4.c:1875) [ 92.912231][ T3827] tcp_v4_rcv (ipv4/tcp_ipv4.c:2246) [ 92.915066][ T3827] ip_protocol_deliver_rcu (ipv4/ip_input.c:207) [ 92.917581][ T3827] ip_local_deliver (ipv4/ip_input.c:241 (discriminator 1)) [ 92.919549][ T3827] ip_sublist_rcv_finish (net/dst.h:480 (discriminator 3)) [ 92.921650][ T3827] ip_sublist_rcv (ipv4/ip_input.c:675 ipv4/ip_input.c:683) [ 92.923332][ T3827] ip_list_rcv (ipv4/ip_input.c:717) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260611/202606110945.d3871219-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki