program: creat(&(0x7f0000000240)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000001900)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000500)=ANY=[@ANYBLOB="1500000065ffff048000000800395032303030"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_NOTIFY_RETRIEVE(r2, &(0x7f00000000c0)={0x14c}, 0x137) r3 = socket$nl_route(0x10, 0x3, 0x0) r4 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r4, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000001c0)=@newqdisc={0x44, 0x24, 0x4ee4e6a52ff56541, 0x0, 0x0, {0x0, 0x0, 0x0, r5, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_hfsc={{0x9}, {0x14, 0x2, @TCA_HFSC_USC={0x10}}}]}, 0x44}}, 0x0) r6 = socket(0x2a, 0x2, 0x0) getsockname$packet(r6, &(0x7f0000000200)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @broadcast}, &(0x7f0000001480)=0x14) sendmsg$nl_route_sched(r6, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000180)=@gettclass={0x24, 0x2a, 0x20, 0x70bd27, 0x25dfdbff, {0x0, 0x0, 0x0, r5, {0x7ff8, 0xe}, {0xd, 0xb}, {0xb, 0x10}}}, 0x24}, 0x1, 0x0, 0x0, 0x810}, 0x0) sendmsg$IPCTNL_MSG_CT_NEW(0xffffffffffffffff, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000000c0)={0x0}}, 0x0) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000340)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000100)=@newtfilter={0x34, 0x2c, 0xd27, 0x70bd2d, 0x0, {0x0, 0x0, 0x0, r7, {0xe}, {}, {0x8, 0xffff}}, [@filter_kind_options=@f_flower={{0xb}, {0x4}}]}, 0x34}}, 0x4000) r8 = socket$netlink(0x10, 0x3, 0x0) sendmmsg(r8, &(0x7f00000002c0), 0x40000000000009f, 0x0) r9 = socket$kcm(0xa, 0x3, 0x3a) sendmsg$kcm(r9, &(0x7f0000000080)={&(0x7f0000000000)=@l2tp6={0xa, 0x0, 0x0, @loopback={0x0, 0xac14140c}, 0x60ea}, 0x80, &(0x7f00000013c0)=[{&(0x7f00000000c0)="fcf47e6bb4", 0x5}], 0x1, 0x0, 0x0, 0x900}, 0x0) mount$9p_fd(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040), 0x0, &(0x7f0000000180)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}}) chmod(&(0x7f0000000140)='./file0\x00', 0x0) r10 = open$dir(&(0x7f0000000140)='./file0\x00', 0x1, 0x0) r11 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='blkio.throttle.io_serviced\x00', 0x275a, 0x0) ftruncate(r11, 0x5) sendfile(r10, r11, 0x0, 0x7ffff000) [ 94.482416][ T5313] Bluetooth: hci0: command tx timeout [ 94.684021][ T5335] Zero length message leads to an empty skb [ 94.716840][ T5335] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI [ 94.722246][ T5335] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 94.725979][ T5335] CPU: 0 UID: 0 PID: 5335 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-04055-g14bed9bc81ba #0 PREEMPT(full) [ 94.730798][ T5335] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 94.734894][ T5335] RIP: 0010:iter_file_splice_write+0xa9b/0x1000 [ 94.738620][ T5335] Code: 00 74 08 4c 89 f7 e8 f4 81 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 81 e0 ff 4c 8b [ 94.747325][ T5335] RSP: 0018:ffffc9000d577820 EFLAGS: 00010202 [ 94.750000][ T5335] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888000752440 [ 94.753456][ T5335] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 7ffffffffffffffa [ 94.756952][ T5335] RBP: ffffc9000d577a30 R08: ffff8880442d00df R09: 1ffff1100885a01b [ 94.760493][ T5335] R10: dffffc0000000000 R11: ffffffff820189f0 R12: dffffc0000000000 [ 94.764089][ T5335] R13: 7ffffffffffffffa R14: dffffc0000000000 R15: ffff8880536db828 [ 94.767772][ T5335] FS: 00007ff2d2f156c0(0000) GS:ffff88808d27b000(0000) knlGS:0000000000000000 [ 94.771652][ T5335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.774482][ T5335] CR2: 00007ff2d2eed9b8 CR3: 0000000044794000 CR4: 0000000000352ef0 [ 94.778039][ T5335] Call Trace: [ 94.779502][ T5335] [ 94.780853][ T5335] ? __pfx_iter_file_splice_write+0x10/0x10 [ 94.783707][ T5335] ? rcu_read_lock_any_held+0xb3/0x120 [ 94.786301][ T5335] ? __pfx_iter_file_splice_write+0x10/0x10 [ 94.788964][ T5335] direct_splice_actor+0xfe/0x160 [ 94.791218][ T5335] splice_direct_to_actor+0x5a8/0xcc0 [ 94.793713][ T5335] ? __pfx_direct_splice_actor+0x10/0x10 [ 94.796190][ T5335] ? __pfx_splice_direct_to_actor+0x10/0x10 [ 94.798882][ T5335] ? __pfx_aa_file_perm+0x10/0x10 [ 94.801083][ T5335] do_splice_direct+0x181/0x270 [ 94.803221][ T5335] ? __pfx_do_splice_direct+0x10/0x10 [ 94.805403][ T5335] ? __pfx_direct_file_splice_eof+0x10/0x10 [ 94.807976][ T5335] ? rw_verify_area+0x258/0x650 [ 94.810082][ T5335] do_sendfile+0x4da/0x7e0 [ 94.812066][ T5335] ? __pfx_do_sendfile+0x10/0x10 [ 94.814222][ T5335] ? rcu_is_watching+0x15/0xb0 [ 94.816210][ T5335] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 94.818769][ T5335] __se_sys_sendfile64+0x13e/0x190 [ 94.820951][ T5335] ? __pfx___se_sys_sendfile64+0x10/0x10 [ 94.823444][ T5335] ? rcu_is_watching+0x15/0xb0 [ 94.825645][ T5335] ? do_syscall_64+0xbe/0x3b0 [ 94.827870][ T5335] do_syscall_64+0xfa/0x3b0 [ 94.829906][ T5335] ? lockdep_hardirqs_on+0x9c/0x150 [ 94.832233][ T5335] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.834824][ T5335] ? clear_bhb_loop+0x60/0xb0 [ 94.837324][ T5335] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.839892][ T5335] RIP: 0033:0x7ff2d218e9a9 [ 94.841787][ T5335] 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 [ 94.849941][ T5335] RSP: 002b:00007ff2d2f15038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 94.853549][ T5335] RAX: ffffffffffffffda RBX: 00007ff2d23b5fa0 RCX: 00007ff2d218e9a9 [ 94.856821][ T5335] RDX: 0000000000000000 RSI: 000000000000000d RDI: 000000000000000c [ 94.860150][ T5335] RBP: 00007ff2d2210d69 R08: 0000000000000000 R09: 0000000000000000 [ 94.863474][ T5335] R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000 [ 94.866890][ T5335] R13: 0000000000000000 R14: 00007ff2d23b5fa0 R15: 00007ffe31043578 [ 94.870316][ T5335] [ 94.871733][ T5335] Modules linked in: [ 94.873945][ T5335] ---[ end trace 0000000000000000 ]--- [ 94.881375][ T5335] RIP: 0010:iter_file_splice_write+0xa9b/0x1000 [ 94.884238][ T5335] Code: 00 74 08 4c 89 f7 e8 f4 81 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 81 e0 ff 4c 8b [ 94.894294][ T5335] RSP: 0018:ffffc9000d577820 EFLAGS: 00010202 [ 94.897073][ T5335] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff888000752440 [ 94.902135][ T5335] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 7ffffffffffffffa [ 94.906340][ T5335] RBP: ffffc9000d577a30 R08: ffff8880442d00df R09: 1ffff1100885a01b [ 94.910114][ T5335] R10: dffffc0000000000 R11: ffffffff820189f0 R12: dffffc0000000000 [ 94.914378][ T5335] R13: 7ffffffffffffffa R14: dffffc0000000000 R15: ffff8880536db828 [ 94.918236][ T5335] FS: 00007ff2d2f156c0(0000) GS:ffff88808d27b000(0000) knlGS:0000000000000000 [ 94.922314][ T5335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.925277][ T5335] CR2: 00007ff2d2387538 CR3: 0000000044794000 CR4: 0000000000352ef0 [ 94.928986][ T5335] Kernel panic - not syncing: Fatal exception [ 94.932103][ T5335] Kernel Offset: disabled [ 94.934233][ T5335] Rebooting in 86400 seconds..