program: r0 = 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(r0, &(0x7f00000001c0)={0x30, 0x5, 0x0, {0x0, 0x1, 0x80000000, 0x8}}, 0x30) write$FUSE_NOTIFY_RETRIEVE(r3, &(0x7f00000000c0)={0x14c}, 0x137) mount$9p_fd(0x0, &(0x7f0000000200)='./file0\x00', &(0x7f0000000040), 0x0, &(0x7f00000002c0)={'trans=fd,', {'rfdno', 0x3d, r1}, 0x2c, {'wfdno', 0x3d, r3}, 0x2c, {[{@access_client}, {@debug={'debug', 0x3d, 0x8001}}, {@privport}], [], 0x6b}}) chmod(&(0x7f0000000140)='./file0\x00', 0x0) r4 = open$dir(&(0x7f0000000140)='./file0\x00', 0x1, 0x0) r5 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='blkio.throttle.io_serviced\x00', 0x275a, 0x0) write$P9_RMKNOD(r3, &(0x7f0000000080)={0x14, 0x13, 0x2, {0x0, 0x1}}, 0x14) ftruncate(r5, 0x5) sendfile(r4, r5, 0x0, 0x7ffff000) [ 93.864097][ T5341] Bluetooth: hci0: command tx timeout [ 94.027758][ T5363] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI [ 94.032753][ T5363] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 94.036361][ T5363] CPU: 0 UID: 0 PID: 5363 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-11241-g186f3edfdd41 #0 PREEMPT(full) [ 94.041497][ T5363] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 94.045980][ T5363] RIP: 0010:iter_file_splice_write+0xa9b/0x1000 [ 94.048719][ T5363] Code: 00 74 08 4c 89 f7 e8 f4 31 e0 ff 49 8b 1e 49 c7 06 00 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df <42> 80 3c 30 00 44 8b 64 24 04 74 08 48 89 df e8 c1 31 e0 ff 4c 8b [ 94.057087][ T5363] RSP: 0018:ffffc9000d377820 EFLAGS: 00010202 [ 94.059938][ T5363] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff8880003ea440 [ 94.063348][ T5363] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 7ffffffffffffffa [ 94.066611][ T5363] RBP: ffffc9000d377a30 R08: ffff8880448100df R09: 1ffff1100890201b [ 94.069829][ T5363] R10: dffffc0000000000 R11: ffffffff8202b430 R12: dffffc0000000000 [ 94.073423][ T5363] R13: 7ffffffffffffffa R14: dffffc0000000000 R15: ffff8880117ff028 [ 94.077097][ T5363] FS: 00007fb5cc8c96c0(0000) GS:ffff88808d21f000(0000) knlGS:0000000000000000 [ 94.080830][ T5363] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.083508][ T5363] CR2: 0000565116442660 CR3: 0000000043db7000 CR4: 0000000000352ef0 [ 94.086872][ T5363] Call Trace: [ 94.088333][ T5363] [ 94.089602][ T5363] ? __pfx_iter_file_splice_write+0x10/0x10 [ 94.092314][ T5363] ? rcu_read_lock_any_held+0xb3/0x120 [ 94.094951][ T5363] ? __pfx_iter_file_splice_write+0x10/0x10 [ 94.097663][ T5363] direct_splice_actor+0x101/0x160 [ 94.099890][ T5363] splice_direct_to_actor+0x5a5/0xcc0 [ 94.102273][ T5363] ? __pfx_direct_splice_actor+0x10/0x10 [ 94.104794][ T5363] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 94.107441][ T5363] ? __pfx_aa_file_perm+0x10/0x10 [ 94.109600][ T5363] do_splice_direct+0x181/0x270 [ 94.111592][ T5363] ? __pfx_do_splice_direct+0x10/0x10 [ 94.113815][ T5363] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 94.116285][ T5363] ? rw_verify_area+0x255/0x4d0 [ 94.118410][ T5363] do_sendfile+0x4da/0x7e0 [ 94.120273][ T5363] ? __pfx_do_sendfile+0x10/0x10 [ 94.122476][ T5363] ? rcu_is_watching+0x15/0xb0 [ 94.124715][ T5363] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 94.127688][ T5363] __se_sys_sendfile64+0x13e/0x190 [ 94.130074][ T5363] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 94.132479][ T5363] ? rcu_is_watching+0x15/0xb0 [ 94.134583][ T5363] ? do_syscall_64+0xbe/0x3b0 [ 94.136662][ T5363] do_syscall_64+0xfa/0x3b0 [ 94.138697][ T5363] ? lockdep_hardirqs_on+0x9c/0x150 [ 94.140903][ T5363] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.143637][ T5363] ? clear_bhb_loop+0x60/0xb0 [ 94.145967][ T5363] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.149112][ T5363] RIP: 0033:0x7fb5cb98eb69 [ 94.151276][ T5363] 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 [ 94.159817][ T5363] RSP: 002b:00007fb5cc8c9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 94.163753][ T5363] RAX: ffffffffffffffda RBX: 00007fb5cbbb5fa0 RCX: 00007fb5cb98eb69 [ 94.168202][ T5363] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007 [ 94.171910][ T5363] RBP: 00007fb5cba11df1 R08: 0000000000000000 R09: 0000000000000000 [ 94.175224][ T5363] R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000 [ 94.178741][ T5363] R13: 0000000000000000 R14: 00007fb5cbbb5fa0 R15: 00007fffc8d2f168 [ 94.182360][ T5363] [ 94.183804][ T5363] Modules linked in: [ 94.186460][ T5363] ---[ end trace 0000000000000000 ]--- [ 94.200067][ T5363] RIP: 0010:iter_file_splice_write+0xa9b/0x1000 [ 94.202921][ T5363] Code: 00 74 08 4c 89 f7 e8 f4 31 e0 ff 49 8b 1e 49 c7 06 00 00 00 00 48 83 c3 08 48 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df <42> 80 3c 30 00 44 8b 64 24 04 74 08 48 89 df e8 c1 31 e0 ff 4c 8b [ 94.213635][ T5363] RSP: 0018:ffffc9000d377820 EFLAGS: 00010202 [ 94.216844][ T5363] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff8880003ea440 [ 94.220451][ T5363] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 7ffffffffffffffa [ 94.223996][ T5363] RBP: ffffc9000d377a30 R08: ffff8880448100df R09: 1ffff1100890201b [ 94.228391][ T5363] R10: dffffc0000000000 R11: ffffffff8202b430 R12: dffffc0000000000 [ 94.232003][ T5363] R13: 7ffffffffffffffa R14: dffffc0000000000 R15: ffff8880117ff028 [ 94.235816][ T5363] FS: 00007fb5cc8c96c0(0000) GS:ffff88808d21f000(0000) knlGS:0000000000000000 [ 94.239992][ T5363] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.243333][ T5363] CR2: 00007fb5cbb88558 CR3: 0000000043db7000 CR4: 0000000000352ef0 [ 94.247826][ T5363] Kernel panic - not syncing: Fatal exception [ 94.250840][ T5363] Kernel Offset: disabled [ 94.252623][ T5363] Rebooting in 86400 seconds..