program: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000180)={0x18, 0x5, &(0x7f0000000480)=ANY=[@ANYBLOB="1801000021000000000000003b810000850000006d000000850000005000000095"], &(0x7f0000000040)='syzkaller\x00', 0x0, 0x0, 0x0, 0x41100, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x90) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000040)={&(0x7f0000000080)='tcp_cong_state_set\x00', r0}, 0x10) creat(&(0x7f0000000240)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000001900)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r2, &(0x7f0000000500)=ANY=[@ANYBLOB="1500000065ffff048000000800395032303030"], 0x15) r3 = dup(r2) write$FUSE_BMAP(r3, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_NOTIFY_RETRIEVE(r3, &(0x7f00000000c0)={0x14c}, 0x137) mount$9p_fd(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f00000004c0), 0x10400, &(0x7f0000000700)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r3]) chmod(&(0x7f0000000140)='./file0\x00', 0x0) r4 = open$dir(&(0x7f0000000140)='./file0\x00', 0x1, 0x181) r5 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='blkio.bfq.io_wait_time\x00', 0x275a, 0x0) ftruncate(r5, 0x80) sendfile(r4, r5, 0x0, 0x7ffff000) r6 = socket$can_raw(0x1d, 0x3, 0x1) r7 = socket$inet_mptcp(0x2, 0x1, 0x106) bind$inet(r7, &(0x7f0000000080)={0x2, 0x4e22, @multicast1}, 0x10) sendto$inet(r7, 0x0, 0x0, 0x28004814, &(0x7f0000000200)={0x2, 0x4e22, @dev={0xac, 0x14, 0x14, 0x3e}}, 0x10) sendto$inet(r7, &(0x7f0000000340)="c7", 0x1, 0x0, 0x0, 0x0) close_range(r6, 0xffffffffffffffff, 0x0) [ 74.050347][ T4666] Bluetooth: hci0: command tx timeout [ 74.178855][ T5319] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 74.183679][ T5319] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 74.186827][ T5319] CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-08291-g805ba04cb7cc #0 [ 74.190520][ T5319] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 74.194619][ T5319] RIP: 0010:iter_file_splice_write+0xe07/0x1510 [ 74.197127][ T5319] Code: 00 00 fc ff df 41 80 3c 06 00 49 89 c6 74 08 4c 89 e7 e8 0c 1e df ff 49 c7 04 24 00 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 fa 1c df ff 48 8b 44 24 20 48 8b [ 74.204364][ T5319] RSP: 0018:ffffc9000d3b7780 EFLAGS: 00010202 [ 74.206687][ T5319] RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000000005 [ 74.210516][ T5319] RDX: ffffc9000e5da000 RSI: 0000000000000000 RDI: 7fffffffffffff7f [ 74.213629][ T5319] RBP: ffffc9000d3b7a30 R08: ffffffff8246e424 R09: 1ffff1100893a01b [ 74.216621][ T5319] R10: dffffc0000000000 R11: ffffffff82036da0 R12: ffff888042ed2038 [ 74.219596][ T5319] R13: 0000000000000000 R14: dffffc0000000000 R15: 7fffffffffffff7f [ 74.222836][ T5319] FS: 00007f3b0c7416c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 [ 74.226383][ T5319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.229110][ T5319] CR2: 0000560effb88fa0 CR3: 0000000040f28000 CR4: 0000000000352ef0 [ 74.232433][ T5319] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.235487][ T5319] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.238634][ T5319] Call Trace: [ 74.240024][ T5319] [ 74.241175][ T5319] ? __die_body+0x5f/0xb0 [ 74.242845][ T5319] ? die_addr+0xb0/0xe0 [ 74.244576][ T5319] ? exc_general_protection+0x3dd/0x5d0 [ 74.246864][ T5319] ? asm_exc_general_protection+0x26/0x30 [ 74.249127][ T5319] ? __pfx_zero_pipe_buf_release+0x10/0x10 [ 74.251410][ T5319] ? iter_file_splice_write+0xd84/0x1510 [ 74.253600][ T5319] ? iter_file_splice_write+0xe07/0x1510 [ 74.255900][ T5319] ? __pfx_iter_file_splice_write+0x10/0x10 [ 74.258306][ T5319] ? rcu_read_lock_any_held+0xb7/0x160 [ 74.260538][ T5319] ? __pfx_iter_file_splice_write+0x10/0x10 [ 74.262845][ T5319] direct_splice_actor+0x11b/0x220 [ 74.264861][ T5319] splice_direct_to_actor+0x586/0xc80 [ 74.266923][ T5319] ? __pfx_direct_splice_actor+0x10/0x10 [ 74.269114][ T5319] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 74.271435][ T5319] ? __fget_files+0x2a/0x410 [ 74.273284][ T5319] ? __pfx_lock_release+0x10/0x10 [ 74.275238][ T5319] do_splice_direct+0x289/0x3e0 [ 74.277142][ T5319] ? __pfx_do_splice_direct+0x10/0x10 [ 74.279212][ T5319] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 74.281448][ T5319] ? rw_verify_area+0x243/0x630 [ 74.283312][ T5319] do_sendfile+0x564/0x8a0 [ 74.285019][ T5319] ? __pfx_do_sendfile+0x10/0x10 [ 74.286882][ T5319] ? __rseq_handle_notify_resume+0x34d/0x14e0 [ 74.289244][ T5319] __se_sys_sendfile64+0x17c/0x1e0 [ 74.291362][ T5319] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 74.293599][ T5319] ? do_syscall_64+0x100/0x230 [ 74.295569][ T5319] ? do_syscall_64+0xb6/0x230 [ 74.297402][ T5319] do_syscall_64+0xf3/0x230 [ 74.299248][ T5319] ? clear_bhb_loop+0x35/0x90 [ 74.301184][ T5319] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.303602][ T5319] RIP: 0033:0x7f3b0b98cd29 [ 74.305321][ T5319] 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 [ 74.312672][ T5319] RSP: 002b:00007f3b0c741038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 74.316060][ T5319] RAX: ffffffffffffffda RBX: 00007f3b0bba5fa0 RCX: 00007f3b0b98cd29 [ 74.319151][ T5319] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000009 [ 74.322275][ T5319] RBP: 00007f3b0ba0e2a0 R08: 0000000000000000 R09: 0000000000000000 [ 74.325161][ T5319] R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000 [ 74.327950][ T5319] R13: 0000000000000000 R14: 00007f3b0bba5fa0 R15: 00007fff56137998 [ 74.331042][ T5319] [ 74.332233][ T5319] Modules linked in: [ 74.334252][ T5319] ---[ end trace 0000000000000000 ]--- [ 74.344663][ T5319] RIP: 0010:iter_file_splice_write+0xe07/0x1510 [ 74.348455][ T5319] Code: 00 00 fc ff df 41 80 3c 06 00 49 89 c6 74 08 4c 89 e7 e8 0c 1e df ff 49 c7 04 24 00 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 fa 1c df ff 48 8b 44 24 20 48 8b [ 74.356783][ T5319] RSP: 0018:ffffc9000d3b7780 EFLAGS: 00010202 [ 74.359482][ T5319] RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000000005 [ 74.362827][ T5319] RDX: ffffc9000e5da000 RSI: 0000000000000000 RDI: 7fffffffffffff7f [ 74.366911][ T5319] RBP: ffffc9000d3b7a30 R08: ffffffff8246e424 R09: 1ffff1100893a01b [ 74.370245][ T5319] R10: dffffc0000000000 R11: ffffffff82036da0 R12: ffff888042ed2038 [ 74.373376][ T5319] R13: 0000000000000000 R14: dffffc0000000000 R15: 7fffffffffffff7f [ 74.377226][ T5319] FS: 00007f3b0c7416c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 [ 74.380696][ T5319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.383292][ T5319] CR2: 00007f3b0bb7d538 CR3: 0000000040f28000 CR4: 0000000000352ef0 [ 74.386835][ T5319] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.389960][ T5319] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.393548][ T5319] Kernel panic - not syncing: Fatal exception [ 74.396185][ T5319] Kernel Offset: disabled [ 74.397814][ T5319] Rebooting in 86400 seconds..