vfs_read+0x1e4/0xb40 fs/read_write.c:572
 ksys_read+0x12a/0x250 fs/read_write.c:716
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/page_alloc.c:1361!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 6026 Comm: syz-executor398 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__free_pages_prepare mm/page_alloc.c:1361 [inline]
RIP: 0010:__free_frozen_pages+0xcd3/0x1090 mm/page_alloc.c:2950
Code: 48 c7 c6 c0 8c e1 8b 4c 89 f7 e8 68 eb ef ff 90 0f 0b 85 db 0f 84 6e f5 ff ff 48 c7 c6 20 8d e1 8b 4c 89 ff e8 4e eb ef ff 90 <0f> 0b 48 c7 44 24 20 01 00 00 00 48 c7 44 24 28 01 00 00 00 e9 d5
RSP: 0018:ffffc900030f7af8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc900030f79dc
RDX: ffff88802b830000 RSI: ffffffff825c2128 RDI: ffff88802b8304c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea00009afb88 R14: ffffea00009afb80 R15: ffffea00009afb80
FS:  00007f34a2fe96c0(0000) GS:ffff8880d5eec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34a27e6208 CR3: 0000000027e6e000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 free_buffer_page kernel/trace/ring_buffer.c:398 [inline]
 ring_buffer_subbuf_order_set+0x1325/0x18e0 kernel/trace/ring_buffer.c:7444
 buffer_subbuf_size_write+0x182/0x280 kernel/trace/trace.c:8221
 vfs_write+0x2aa/0x1050 fs/read_write.c:685
 ksys_pwrite64 fs/read_write.c:794 [inline]
 __do_sys_pwrite64 fs/read_write.c:802 [inline]
 __se_sys_pwrite64 fs/read_write.c:799 [inline]
 __x64_sys_pwrite64+0x1eb/0x250 fs/read_write.c:799
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f34a303ec1e
Code: 08 0f 85 f5 e2 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 90 41 57 41 56 4d 89 c6 41 55 4d 89 cd 41 54 55 53 48 83 ec 08
RSP: 002b:00007f34a2fe9198 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f34a2fe96c0 RCX: 00007f34a303ec1e
RDX: 0000000000000002 RSI: 00007f34a308a02b RDI: 0000000000000003
RBP: 00007f34a308a028 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffd0
R13: 0000000000000000 R14: 00007ffcb8a85c30 R15: 00007ffcb8a85d18
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__free_pages_prepare mm/page_alloc.c:1361 [inline]
RIP: 0010:__free_frozen_pages+0xcd3/0x1090 mm/page_alloc.c:2950
Code: 48 c7 c6 c0 8c e1 8b 4c 89 f7 e8 68 eb ef ff 90 0f 0b 85 db 0f 84 6e f5 ff ff 48 c7 c6 20 8d e1 8b 4c 89 ff e8 4e eb ef ff 90 <0f> 0b 48 c7 44 24 20 01 00 00 00 48 c7 44 24 28 01 00 00 00 e9 d5
RSP: 0018:ffffc900030f7af8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc900030f79dc
RDX: ffff88802b830000 RSI: ffffffff825c2128 RDI: ffff88802b8304c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea00009afb88 R14: ffffea00009afb80 R15: ffffea00009afb80
FS:  00007f34a2fe96c0(0000) GS:ffff8880d5eec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34a27e6208 CR3: 0000000027e6e000 CR4: 0000000000352ef0