------------[ cut here ]------------ WARNING: CPU: 3 PID: 17349 at kernel/rcu/tree_stall.h:826 rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:818 Modules linked in: CPU: 3 PID: 17349 Comm: syz-executor.2 Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:826 Code: 0f 88 fa 00 00 00 be 04 00 00 00 48 c7 c7 a0 84 77 90 e8 5e fe 58 00 b8 01 00 00 00 87 05 f3 82 16 0f 85 c0 0f 85 c9 00 00 00 <0f> 0b 48 81 fd 00 22 f8 8b 48 c7 c3 0c ad c9 8d 74 58 48 b8 00 00 RSP: 0018:ffffc900005a8e30 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 000000010000862c RCX: ffffffff816101a2 RDX: fffffbfff20ef094 RSI: 0000000000000004 RDI: ffffffff907784a0 RBP: ffffffff8bf82200 R08: 0000000000000001 R09: 0000000000000003 R10: fffffbfff20ef094 R11: 1ffff110059a6cae R12: 1ffffffff1781e30 R13: 0000000000000246 R14: ffff88802cd36492 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:00000000f55b4b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000009d82efc CR3: 000000006c5cb000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_check_gp_start_stall kernel/rcu/tree_stall.h:789 [inline] rcu_core+0x4df/0x13b0 kernel/rcu/tree.c:2788 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 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:647 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline] RIP: 0010:kasan_check_range+0xde/0x180 mm/kasan/generic.c:186 Code: 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 80 38 00 <74> f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c 2c eb 0c RSP: 0018:ffffc900010771c0 EFLAGS: 00000246 RAX: fffff940002e5628 RBX: fffff940002e5629 RCX: ffffffff81b4d5a9 RDX: fffff940002e5629 RSI: 0000000000000008 RDI: ffffea000172b140 RBP: fffff940002e5628 R08: 0000000000000000 R09: ffffea000172b147 R10: fffff940002e5628 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880143b3f00 R15: ffffea000172b140 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] PageCompound include/linux/page-flags.h:198 [inline] PageHuge+0x19/0x170 mm/hugetlb.c:1551 try_to_unmap_one+0xee2/0x2f70 mm/rmap.c:1732 rmap_walk_file+0x397/0x860 mm/rmap.c:1951 rmap_walk+0x105/0x190 mm/rmap.c:1969 try_to_unmap+0x315/0x390 mm/rmap.c:1785 shrink_page_list+0x2cba/0x6060 mm/vmscan.c:1502 reclaim_pages+0x3e2/0xcd0 mm/vmscan.c:2343 madvise_cold_or_pageout_pte_range+0x157c/0x2980 mm/madvise.c:473 walk_pmd_range mm/pagewalk.c:89 [inline] walk_pud_range mm/pagewalk.c:160 [inline] walk_p4d_range mm/pagewalk.c:193 [inline] walk_pgd_range mm/pagewalk.c:229 [inline] __walk_page_range+0xe31/0x1eb0 mm/pagewalk.c:331 walk_page_range+0x20d/0x400 mm/pagewalk.c:427 madvise_pageout_page_range mm/madvise.c:526 [inline] madvise_pageout+0x215/0x3f0 mm/madvise.c:563 madvise_vma mm/madvise.c:934 [inline] do_madvise.part.0+0x9f2/0x1ec0 mm/madvise.c:1133 do_madvise mm/madvise.c:1159 [inline] __do_sys_madvise mm/madvise.c:1159 [inline] __se_sys_madvise mm/madvise.c:1157 [inline] __ia32_sys_madvise+0x115/0x150 mm/madvise.c:1157 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline] __do_fast_syscall_32+0x67/0xe0 arch/x86/entry/common.c:143 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:168 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7ffc549 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:00000000f55b45fc EFLAGS: 00000296 ORIG_RAX: 00000000000000db RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000600003 RDX: 0000000000000015 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000