============================= [ BUG: Invalid wait context ] 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Not tainted ----------------------------- syz.0.0/5313 is trying to lock: ffff88805ffd7298 (&zone->lock){..-.}-{3:3}, at: rmqueue_buddy mm/page_alloc.c:2909 [inline] ffff88805ffd7298 (&zone->lock){..-.}-{3:3}, at: rmqueue mm/page_alloc.c:3082 [inline] ffff88805ffd7298 (&zone->lock){..-.}-{3:3}, at: get_page_from_freelist+0xb3d/0x37a0 mm/page_alloc.c:3473 other info that might help us debug this: context-{2:2} 4 locks held by syz.0.0/5313: #0: ffff888045096c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #0: ffff888045096c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline] #0: ffff888045096c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1408 #1: ffff88803fe19858 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1623 [inline] #1: ffff88803fe19858 (sk_lock-AF_INET6){+.+.}-{0:0}, at: dccp_close+0xb0/0x1070 net/dccp/proto.c:998 #2: ffff88803fe1a2d8 (slock-AF_INET6){+.-.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline] #2: ffff88803fe1a2d8 (slock-AF_INET6){+.-.}-{3:3}, at: inet_csk_listen_stop+0x187/0xb00 net/ipv4/inet_connection_sock.c:1497 #3: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline] #3: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3032 [inline] #3: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3076 [inline] #3: ffff88801fc44ad8 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x7d3/0x37a0 mm/page_alloc.c:3473 stack backtrace: CPU: 0 UID: 0 PID: 5313 Comm: syz.0.0 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline] check_wait_context kernel/locking/lockdep.c:4898 [inline] __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 rmqueue_buddy mm/page_alloc.c:2909 [inline] rmqueue mm/page_alloc.c:3082 [inline] get_page_from_freelist+0xb3d/0x37a0 mm/page_alloc.c:3473 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627 kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544 task_work_add+0xd9/0x490 kernel/task_work.c:77 __run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1223 [inline] run_posix_cpu_timers+0x6ac/0x810 kernel/time/posix-cpu-timers.c:1422 tick_sched_handle kernel/time/tick-sched.c:276 [inline] tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x551/0xd30 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae 38 3a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 03 e6 a1 f5 65 8b 05 b4 28 38 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc9000d3670a0 EFLAGS: 00000206 RAX: 6e9caefb4b4c5500 RBX: 1ffff92001a6ce18 RCX: ffffffff817b383a RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: 0000000000000001 RBP: ffffc9000d367138 R08: ffffffff942a5887 R09: 1ffffffff2854b10 R10: dffffc0000000000 R11: fffffbfff2854b11 R12: dffffc0000000000 R13: 1ffff92001a6ce14 R14: ffffc9000d3670c0 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] rmqueue_bulk mm/page_alloc.c:2328 [inline] __rmqueue_pcplist+0x21fd/0x2a90 mm/page_alloc.c:3003 rmqueue_pcplist mm/page_alloc.c:3045 [inline] rmqueue mm/page_alloc.c:3076 [inline] get_page_from_freelist+0x886/0x37a0 mm/page_alloc.c:3473 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4613 [inline] kmem_cache_free+0x195/0x410 mm/slub.c:4715 dccp_ackvec_purge_records net/dccp/ackvec.c:33 [inline] dccp_ackvec_free+0x7b/0x110 net/dccp/ackvec.c:40 dccp_destroy_sock+0x283/0x310 net/dccp/proto.c:238 inet_csk_destroy_sock+0x15b/0x380 net/ipv4/inet_connection_sock.c:1306 inet_csk_listen_stop+0x43d/0xb00 net/ipv4/inet_connection_sock.c:1525 dccp_close+0x55d/0x1070 net/dccp/proto.c:1006 inet_release+0x17d/0x200 net/ipv4/af_inet.c:435 __sock_release net/socket.c:640 [inline] sock_close+0xbc/0x240 net/socket.c:1408 __fput+0x23c/0xa50 fs/file_table.c:450 task_work_run+0x24f/0x310 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcffb585d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcffc302038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fcffb775fa0 RCX: 00007fcffb585d29 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003 RBP: 00007fcffb601b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcffb775fa0 R15: 00007ffdd051e1d8 ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 ae 38 3a f6 call 0xf63a38c2 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 52 jne 0x6d 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 03 e6 a1 f5 call 0xf5a1e632 <-- trapping instruction 2f: 65 8b 05 b4 28 38 74 mov %gs:0x743828b4(%rip),%eax # 0x743828ea 36: 85 c0 test %eax,%eax 38: 74 43 je 0x7d 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss