Hello, syzbot found the following issue on: HEAD commit: 3245cb65fd91 Merge tag 'devicetree-fixes-for-6.0-2' of git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16310dbf080000 kernel config: https://syzkaller.appspot.com/x/.config?x=98a30118ec9215e9 dashboard link: https://syzkaller.appspot.com/bug?extid=bc05445bc14148d51915 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bc05445bc14148d51915@xxxxxxxxxxxxxxxxxxxxxxxxx ================================ WARNING: inconsistent lock state 6.0.0-rc5-syzkaller-00025-g3245cb65fd91 #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.2/27685 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffe8ffffc7d280 (&pd_list->lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffffe8ffffc7d280 (&pd_list->lock){+.?.}-{2:2}, at: padata_do_serial+0x21e/0x4b0 kernel/padata.c:392 {SOFTIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] padata_do_serial+0x21e/0x4b0 kernel/padata.c:392 pcrypt_aead_enc+0x57/0x70 crypto/pcrypt.c:89 padata_do_parallel+0x87b/0xa10 kernel/padata.c:217 pcrypt_aead_encrypt+0x39f/0x4d0 crypto/pcrypt.c:117 crypto_aead_encrypt+0xaa/0xf0 crypto/aead.c:94 tls_do_encryption net/tls/tls_sw.c:529 [inline] tls_push_record+0x13e8/0x3260 net/tls/tls_sw.c:762 bpf_exec_tx_verdict+0xd82/0x11a0 net/tls/tls_sw.c:802 tls_sw_sendmsg+0xa62/0x1820 net/tls/tls_sw.c:1014 inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:653 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 sock_write_iter+0x291/0x3d0 net/socket.c:1108 call_write_iter include/linux/fs.h:2187 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x9e9/0xdd0 fs/read_write.c:578 ksys_write+0x1e8/0x250 fs/read_write.c:631 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 irq event stamp: 740 hardirqs last enabled at (740): [<ffffffff814919a0>] __local_bh_enable_ip+0xa0/0x120 kernel/softirq.c:401 hardirqs last disabled at (739): [<ffffffff814919c3>] __local_bh_enable_ip+0xc3/0x120 kernel/softirq.c:378 softirqs last enabled at (0): [<ffffffff8146f02e>] copy_process+0x213e/0x7090 kernel/fork.c:2202 softirqs last disabled at (717): [<ffffffff81491843>] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (717): [<ffffffff81491843>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&pd_list->lock); <Interrupt> lock(&pd_list->lock); *** DEADLOCK *** 4 locks held by syz-executor.2/27685: #0: ffff8880445f0460 (sb_writers#3){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3470 [inline] #0: ffff8880445f0460 (sb_writers#3){.+.+}-{0:0}, at: path_openat+0x2613/0x28f0 fs/namei.c:3688 #1: ffff8880465111a0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline] #1: ffff8880465111a0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline] #1: ffff8880465111a0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: path_openat+0x1514/0x28f0 fs/namei.c:3688 #2: ffffc900001e0d70 ((&d->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:31 [inline] #2: ffffc900001e0d70 ((&d->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1464 #3: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: buf_msg net/tipc/msg.h:202 [inline] #3: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: tipc_bearer_xmit_skb+0x8c/0x410 net/tipc/bearer.c:550 stack backtrace: CPU: 1 PID: 27685 Comm: syz-executor.2 Not tainted 6.0.0-rc5-syzkaller-00025-g3245cb65fd91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_usage_bug kernel/locking/lockdep.c:3961 [inline] valid_state kernel/locking/lockdep.c:3973 [inline] mark_lock_irq kernel/locking/lockdep.c:4176 [inline] mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4527 [inline] __lock_acquire+0x11d9/0x56d0 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] padata_do_serial+0x21e/0x4b0 kernel/padata.c:392 pcrypt_aead_enc+0x57/0x70 crypto/pcrypt.c:89 padata_do_parallel+0x87b/0xa10 kernel/padata.c:217 pcrypt_aead_encrypt+0x39f/0x4d0 crypto/pcrypt.c:117 crypto_aead_encrypt+0xaa/0xf0 crypto/aead.c:94 tipc_aead_encrypt net/tipc/crypto.c:821 [inline] tipc_crypto_xmit+0xf7a/0x2af0 net/tipc/crypto.c:1756 tipc_bearer_xmit_skb+0x1ed/0x410 net/tipc/bearer.c:557 tipc_disc_timeout+0x75e/0xcb0 net/tipc/discover.c:335 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 6a 2e dc f7 48 89 ef e8 f2 af dc f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> a3 71 cf f7 65 8b 05 5c 27 7f 76 85 c0 74 0a 5b 5d c3 e8 60 38 RSP: 0018:ffffc90015e5f520 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff21242a6 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001 RBP: ffff8880119db3c0 R08: 0000000000000001 R09: ffffffff908e49e7 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888140007640 R13: ffff8880119db3c0 R14: ffffea0001194380 R15: ffff88804650ea48 spin_unlock_irqrestore include/linux/spinlock.h:404 [inline] get_partial_node.part.0+0x1ad/0x220 mm/slub.c:2207 get_partial_node mm/slub.c:2175 [inline] get_partial mm/slub.c:2287 [inline] ___slab_alloc+0x918/0xe10 mm/slub.c:3026 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118 slab_alloc_node mm/slub.c:3209 [inline] slab_alloc mm/slub.c:3251 [inline] __kmem_cache_alloc_lru mm/slub.c:3258 [inline] kmem_cache_alloc_lru+0x528/0x720 mm/slub.c:3275 __d_alloc+0x32/0x960 fs/dcache.c:1769 d_alloc+0x4a/0x230 fs/dcache.c:1849 d_alloc_parallel+0xe4/0x1400 fs/dcache.c:2647 lookup_open.isra.0+0x928/0x12a0 fs/namei.c:3338 open_last_lookups fs/namei.c:3481 [inline] path_openat+0x996/0x28f0 fs/namei.c:3688 do_filp_open+0x1b6/0x400 fs/namei.c:3718 do_sys_openat2+0x16d/0x4c0 fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_compat_sys_openat fs/open.c:1387 [inline] __se_compat_sys_openat fs/open.c:1385 [inline] __ia32_compat_sys_openat+0x13f/0x1f0 fs/open.c:1385 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7fc6549 Code: 03 74 c0 01 10 05 03 74 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 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 RSP: 002b:00000000f748f8e0 EFLAGS: 00000286 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f6ea12ec RDX: 0000000000080001 RSI: 0000000000000000 RDI: 00000000f6f37000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> ---------------- Code disassembly (best guess): 0: 74 24 je 0x26 2: 10 e8 adc %ch,%al 4: 6a 2e pushq $0x2e 6: dc f7 fdiv %st,%st(7) 8: 48 89 ef mov %rbp,%rdi b: e8 f2 af dc f7 callq 0xf7dcb002 10: 81 e3 00 02 00 00 and $0x200,%ebx 16: 75 25 jne 0x3d 18: 9c pushfq 19: 58 pop %rax 1a: f6 c4 02 test $0x2,%ah 1d: 75 2d jne 0x4c 1f: 48 85 db test %rbx,%rbx 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 a3 71 cf f7 callq 0xf7cf71d2 <-- trapping instruction 2f: 65 8b 05 5c 27 7f 76 mov %gs:0x767f275c(%rip),%eax # 0x767f2792 36: 85 c0 test %eax,%eax 38: 74 0a je 0x44 3a: 5b pop %rbx 3b: 5d pop %rbp 3c: c3 retq 3d: e8 .byte 0xe8 3e: 60 (bad) 3f: 38 .byte 0x38 --- This report is generated by a bot. 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