syzbot

loop0: detected capacity change from 0 to 16
erofs (device loop0): mounted with root inode @ nid 36.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5468 at fs/dax.c:224 get_next_unlocked_entry+0x329/0x340 fs/dax.c:224
Modules linked in:
CPU: 0 UID: 0 PID: 5468 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:get_next_unlocked_entry+0x329/0x340 fs/dax.c:224
Code: fe 1c 10 48 3b 84 24 c0 00 00 00 75 22 4c 89 e8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 be 92 fa 08 cc e8 c8 aa 6d ff 90 <0f> 0b 90 eb a0 e8 ad ae f7 08 66 66 66 66 2e 0f 1f 84 00 00 00 00
RSP: 0018:ffffc900029cea20 EFLAGS: 00010093
RAX: ffffffff8252e228 RBX: 1ffff92000539dca RCX: ffff888000eea480
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900029ceb30 R08: ffffc900029ceab7 R09: 0000000000000000
R10: ffffc900029cea80 R11: fffff52000539d57 R12: ffffc900029cea98
R13: ffffea000103b180 R14: ffffc900029cea80 R15: dffffc0000000000
FS:  0000555561712500(0000) GS:ffff88808d722000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fd63fff CR3: 000000004bf7d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 grab_mapping_entry+0x176/0x660 fs/dax.c:660
 dax_iomap_pte_fault fs/dax.c:1891 [inline]
 dax_iomap_fault+0x8a9/0x1890 fs/dax.c:2076
 __do_fault+0x138/0x390 mm/memory.c:5281
 do_cow_fault mm/memory.c:5746 [inline]
 do_fault mm/memory.c:5852 [inline]
 do_pte_missing mm/memory.c:4362 [inline]
 handle_pte_fault mm/memory.c:6195 [inline]
 __handle_mm_fault+0x1719/0x5400 mm/memory.c:6336
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6505
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x165c/0x2a00 mm/gup.c:1428
 __get_user_pages_locked mm/gup.c:1692 [inline]
 get_user_pages_remote+0x2f1/0xac0 mm/gup.c:2614
 uprobe_write+0x1b6/0x2160 kernel/events/uprobes.c:529
 uprobe_write_opcode+0xa8/0xf0 kernel/events/uprobes.c:493
 set_swbp+0x121/0x290 arch/x86/kernel/uprobes.c:1090
 install_breakpoint+0x451/0x5a0 kernel/events/uprobes.c:1170
 register_for_each_vma+0xabb/0xc30 kernel/events/uprobes.c:1315
 uprobe_register+0x7f2/0x950 kernel/events/uprobes.c:1424
 bpf_uprobe_multi_link_attach+0xb92/0xee0 kernel/trace/bpf_trace.c:3273
 link_create+0x747/0x900 kernel/bpf/syscall.c:5736
 __sys_bpf+0x6be/0x860 kernel/bpf/syscall.c:6219
 __do_sys_bpf kernel/bpf/syscall.c:6259 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6257 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6257
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f152d18f7c9
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:00007fff205f0c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f152d3e5fa0 RCX: 00007f152d18f7c9
RDX: 0000000000000040 RSI: 00002000000005c0 RDI: 000000000000001c
RBP: 00007f152d213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f152d3e5fa0 R14: 00007f152d3e5fa0 R15: 0000000000000003
 </TASK>