------------[ cut here ]------------ WARNING: CPU: 1 PID: 3126 at kernel/rcu/tree_stall.h:824 rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:816 Modules linked in: CPU: 1 PID: 3126 Comm: syz-executor.3 Not tainted 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:824 Code: 0f 88 fa 00 00 00 be 04 00 00 00 48 c7 c7 20 95 e2 8f e8 6e 56 57 00 b8 01 00 00 00 87 05 e3 3b 82 0e 85 c0 0f 85 c9 00 00 00 <0f> 0b 48 81 fd 00 c9 f7 8b 48 c7 c3 0c 5e c5 8d 74 58 48 b8 00 00 RSP: 0018:ffffc90000dc0e50 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 000000010004a98a RCX: ffffffff81605932 RDX: fffffbfff1fc52a4 RSI: 0000000000000004 RDI: ffffffff8fe29520 RBP: ffffffff8bf7c900 R08: 0000000000000001 R09: 0000000000000003 R10: fffffbfff1fc52a4 R11: ffffffff8bf7c940 R12: 1ffffffff1781e30 R13: 0000000000000246 R14: ffff8880b9d35fd2 R15: ffff8880b9d36058 FS: 00007fcf586a1700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8513e39718 CR3: 0000000059c4c000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_check_gp_start_stall kernel/rcu/tree_stall.h:787 [inline] rcu_core+0x4ec/0x12f0 kernel/rcu/tree.c:2789 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345 invoke_softirq kernel/softirq.c:221 [inline] __irq_exit_rcu kernel/softirq.c:422 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:434 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 RIP: 0010:unwind_next_frame+0x86f/0x1ce0 arch/x86/kernel/unwind_orc.c:466 Code: 00 4c 89 c0 49 8b 56 38 48 be 00 00 00 00 00 fc ff df 48 c1 e8 03 0f b6 3c 30 49 8d 40 01 49 89 c1 49 c1 e9 03 41 0f b6 34 31 <4d> 89 c1 41 83 e1 07 44 38 cf 41 0f 9e c1 40 84 ff 40 0f 95 c7 41 RSP: 0018:ffffc9000221f1c0 EFLAGS: 00000a02 RAX: ffffffff8e46ca4b RBX: 1ffff92000443e40 RCX: ffffffff8e46ca4f RDX: ffffc9000221f6c8 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff8e46ca4a R09: 1ffffffff1c8d949 R10: fffff52000443e5e R11: 0000000000084087 R12: ffffc9000221f2e0 R13: ffffc9000221f2cd R14: ffffc9000221f298 R15: ffffffff8e46ca4e arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357 ____kasan_slab_free mm/kasan/common.c:360 [inline] ____kasan_slab_free mm/kasan/common.c:325 [inline] __kasan_slab_free+0xf5/0x130 mm/kasan/common.c:367 kasan_slab_free include/linux/kasan.h:199 [inline] slab_free_hook mm/slub.c:1562 [inline] slab_free_freelist_hook+0x92/0x210 mm/slub.c:1600 slab_free mm/slub.c:3161 [inline] kmem_cache_free+0x8a/0x740 mm/slub.c:3177 merge_or_add_vmap_area mm/vmalloc.c:783 [inline] merge_or_add_vmap_area_augment mm/vmalloc.c:833 [inline] __purge_vmap_area_lazy+0xaa7/0x1c50 mm/vmalloc.c:1374 _vm_unmap_aliases.part.0+0x3d6/0x4e0 mm/vmalloc.c:1784 _vm_unmap_aliases mm/vmalloc.c:1758 [inline] vm_unmap_aliases+0x47/0x50 mm/vmalloc.c:1807 change_page_attr_set_clr+0x241/0x500 arch/x86/mm/pat/set_memory.c:1732 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1789 [inline] set_memory_ro+0x78/0xa0 arch/x86/mm/pat/set_memory.c:1935 bpf_jit_binary_lock_ro include/linux/filter.h:851 [inline] bpf_int_jit_compile+0xe11/0x11b0 arch/x86/net/bpf_jit_comp.c:2329 bpf_prog_select_runtime+0x576/0x9f0 kernel/bpf/core.c:1868 bpf_prog_load+0xe75/0x1f40 kernel/bpf/syscall.c:2218 __do_sys_bpf+0x1272/0x4f40 kernel/bpf/syscall.c:4393 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcf586a1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffdf3c9d84f R14: 00007fcf586a1300 R15: 0000000000022000