unix_dgram_sendmsg+0x45e/0x18c0 net/unix/af_unix.c:2017
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:733 [inline]
__sys_sendto+0x488/0x4f0 net/socket.c:2187
__do_sys_sendto net/socket.c:2194 [inline]
__se_sys_sendto net/socket.c:2190 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2190
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at ./include/linux/mm.h:1222!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 14477 Comm: syz.4.4128 Not tainted 6.14.0-rc3-syzkaller-00079-g87a132e73910 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:folio_entire_mapcount include/linux/mm.h:1222 [inline]
RIP: 0010:folio_precise_page_mapcount fs/proc/internal.h:172 [inline]
RIP: 0010:kpagecount_read+0x477/0x570 fs/proc/page.c:71
Code: 31 ff 49 29 c4 48 8b 44 24 08 4c 01 20 e8 61 e0 60 ff eb 92 e8 2a e5 60 ff 48 8b 3c 24 48 c7 c6 a0 6d 82 8b e8 2a 6b a7 ff 90 <0f> 0b 4c 89 ff e8 0f 25 c3 ff e9 5a ff ff ff e8 05 e5 60 ff 48 8b
RSP: 0018:ffffc9000b7afc98 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000000000 RCX: ffffc9000e51b000
RDX: 0000000000080000 RSI: ffffffff8258f926 RDI: ffff88806350a244
RBP: 0000000000fe3d90 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90627117 R11: 0000000000000003 R12: 000000000021c270
R13: 000000000004384e R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f817930c6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f81911762d8 CR3: 000000004abd2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
pde_read fs/proc/inode.c:308 [inline]
proc_reg_read+0x11d/0x330 fs/proc/inode.c:318
vfs_read+0x1df/0xbf0 fs/read_write.c:563
ksys_pread64 fs/read_write.c:756 [inline]
__do_sys_pread64 fs/read_write.c:764 [inline]
__se_sys_pread64 fs/read_write.c:761 [inline]
__x64_sys_pread64+0x1f6/0x250 fs/read_write.c:761
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f817858cde9
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:00007f817930c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000011
RAX: ffffffffffffffda RBX: 00007f81787a6080 RCX: 00007f817858cde9
RDX: 000000007fffffff RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f817860e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f81787a6080 R15: 00007ffdce50cd28
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_entire_mapcount include/linux/mm.h:1222 [inline]
RIP: 0010:folio_precise_page_mapcount fs/proc/internal.h:172 [inline]
RIP: 0010:kpagecount_read+0x477/0x570 fs/proc/page.c:71
Code: 31 ff 49 29 c4 48 8b 44 24 08 4c 01 20 e8 61 e0 60 ff eb 92 e8 2a e5 60 ff 48 8b 3c 24 48 c7 c6 a0 6d 82 8b e8 2a 6b a7 ff 90 <0f> 0b 4c 89 ff e8 0f 25 c3 ff e9 5a ff ff ff e8 05 e5 60 ff 48 8b
RSP: 0018:ffffc9000b7afc98 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000000000 RCX: ffffc9000e51b000
RDX: 0000000000080000 RSI: ffffffff8258f926 RDI: ffff88806350a244
RBP: 0000000000fe3d90 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90627117 R11: 0000000000000003 R12: 000000000021c270
R13: 000000000004384e R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f817930c6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f644b762d0 CR3: 000000004abd2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400