------------[ cut here ]------------ WARNING: CPU: 0 PID: 4139 at include/linux/mmap_lock.h:155 mmap_assert_locked include/linux/mmap_lock.h:155 [inline] WARNING: CPU: 0 PID: 4139 at include/linux/mmap_lock.h:155 anon_vma_name+0xd8/0x120 mm/madvise.c:96 Modules linked in: CPU: 0 PID: 4139 Comm: syz-executor.0 Not tainted 6.1.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:mmap_assert_locked include/linux/mmap_lock.h:155 [inline] RIP: 0010:anon_vma_name+0xd8/0x120 mm/madvise.c:96 Code: c1 ea 03 80 3c 02 00 75 54 48 8b 83 80 00 00 00 5b 5d 41 5c c3 48 8d bd 58 01 00 00 be ff ff ff ff e8 fc d7 14 07 85 c0 75 8a <0f> 0b eb 86 48 89 ef e8 4c 10 f5 ff 0f 0b 48 c7 c7 ec 2d f2 8c e8 RSP: 0018:ffffc90004b1f818 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffff8ac6a000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff892be2c0 RDI: ffffffff898576a0 RBP: 0000000000000000 R08: ffffc90004b1f708 R09: 0000000000000000 R10: ffffffffff600000 R11: 0000000000000000 R12: ffff88801bec0818 R13: ffffffff8ac6a008 R14: ffffffff8ac6a010 R15: 0000000000000000 FS: 00007f90a54b9700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f90a47a80c0 CR3: 00000000246d1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: show_map_vma+0x1f7/0x5f0 fs/proc/task_mmu.c:297 show_smap+0xca/0x420 fs/proc/task_mmu.c:866 traverse.part.0+0xbb/0x5b0 fs/seq_file.c:111 traverse fs/seq_file.c:101 [inline] seq_read_iter+0x76f/0x1090 fs/seq_file.c:195 seq_read+0x161/0x200 fs/seq_file.c:162 do_loop_readv_writev fs/read_write.c:756 [inline] do_loop_readv_writev fs/read_write.c:743 [inline] do_iter_read+0x3e7/0x690 fs/read_write.c:798 vfs_readv+0xc3/0x130 fs/read_write.c:916 do_preadv fs/read_write.c:1008 [inline] __do_sys_preadv fs/read_write.c:1058 [inline] __se_sys_preadv fs/read_write.c:1053 [inline] __x64_sys_preadv+0x1d1/0x290 fs/read_write.c:1053 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f90a468b639 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f90a54b9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f90a47abf80 RCX: 00007f90a468b639 RDX: 0000000000000001 RSI: 00000000200006c0 RDI: 0000000000000003 RBP: 00007f90a46e67e1 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffffe R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0760396f R14: 00007f90a54b9300 R15: 0000000000022000