[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.104' (ECDSA) to the list of known hosts. 2021/05/07 04:18:41 fuzzer started 2021/05/07 04:18:41 dialing manager at 10.128.0.163:35977 2021/05/07 04:18:41 syscalls: 1982 2021/05/07 04:18:41 code coverage: enabled 2021/05/07 04:18:41 comparison tracing: enabled 2021/05/07 04:18:41 extra coverage: enabled 2021/05/07 04:18:41 setuid sandbox: enabled 2021/05/07 04:18:41 namespace sandbox: enabled 2021/05/07 04:18:41 Android sandbox: enabled 2021/05/07 04:18:41 fault injection: enabled 2021/05/07 04:18:41 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/07 04:18:41 net packet injection: /dev/net/tun does not exist 2021/05/07 04:18:41 net device setup: enabled 2021/05/07 04:18:41 concurrency sanitizer: enabled 2021/05/07 04:18:41 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/07 04:18:41 USB emulation: /dev/raw-gadget does not exist 2021/05/07 04:18:41 hci packet injection: /dev/vhci does not exist 2021/05/07 04:18:41 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 2021/05/07 04:18:41 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 2021/05/07 04:18:41 suppressing KCSAN reports in functions: '__send_signal' 'ext4_free_inode' '__xa_clear_mark' 2021/05/07 04:18:41 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/07 04:18:41 fetching corpus: 48, signal 25051/27289 (executing program) 2021/05/07 04:18:41 fetching corpus: 98, signal 34489/36884 (executing program) 2021/05/07 04:18:41 fetching corpus: 148, signal 41378/43600 (executing program) 2021/05/07 04:18:41 fetching corpus: 196, signal 45128/47255 (executing program) 2021/05/07 04:18:41 fetching corpus: 246, signal 48253/50204 (executing program) 2021/05/07 04:18:41 fetching corpus: 294, signal 52604/53797 (executing program) 2021/05/07 04:18:41 fetching corpus: 343, signal 55375/55932 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57029 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57044 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57070 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57086 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57108 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57135 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57149 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57173 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57196 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57220 (executing program) 2021/05/07 04:18:41 fetching corpus: 363, signal 56824/57233 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56824/57261 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57280 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57295 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57317 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57338 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57369 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57387 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57410 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57427 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57441 (executing program) 2021/05/07 04:18:42 fetching corpus: 363, signal 56831/57441 (executing program) syzkaller login: [ 18.411434][ T1742] ================================================================== [ 18.415265][ T1742] BUG: KCSAN: data-race in complete_signal / futex_wait_queue_me [ 18.418321][ T1742] [ 18.419112][ T1742] write to 0xffff8881009af02c of 4 bytes by task 1744 on cpu 1: [ 18.420935][ T1742] futex_wait_queue_me+0x198/0x260 [ 18.422065][ T1742] futex_wait+0x143/0x430 [ 18.423264][ T1742] do_futex+0x9e8/0x1ee0 [ 18.424347][ T1742] __se_sys_futex+0x2a8/0x390 [ 18.425861][ T1742] __x64_sys_futex+0x74/0x80 [ 18.427573][ T1742] do_syscall_64+0x4a/0x90 [ 18.428946][ T1742] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 18.431100][ T1742] [ 18.432239][ T1742] read to 0xffff8881009af02c of 4 bytes by task 1742 on cpu 0: [ 18.440124][ T1742] complete_signal+0x7c/0x600 [ 18.444910][ T1742] __send_signal+0x680/0x760 [ 18.449673][ T1742] send_signal+0x281/0x390 [ 18.454174][ T1742] do_send_specific+0x13d/0x1c0 [ 18.459428][ T1742] __x64_sys_tgkill+0x108/0x140 [ 18.464432][ T1742] do_syscall_64+0x4a/0x90 [ 18.469624][ T1742] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 18.475639][ T1742] [ 18.477975][ T1742] Reported by Kernel Concurrency Sanitizer on: [ 18.484106][ T1742] CPU: 0 PID: 1742 Comm: syz-fuzzer Not tainted 5.12.0-syzkaller #0 [ 18.492180][ T1742] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.502232][ T1742] ================================================================== 2021/05/07 04:18:43 starting 6 fuzzer processes 04:18:43 executing program 0: r0 = openat(0xffffffffffffffff, &(0x7f00000000c0)='/proc/self/exe\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1800003, 0x12, r0, 0x0) preadv(r0, &(0x7f0000000280), 0x18, 0xd9f, 0x0) r1 = syz_open_dev$tty20(0xc, 0x4, 0x0) ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000040)) close(r1) 04:18:43 executing program 1: prlimit64(0x0, 0xe, &(0x7f0000000280)={0xc, 0x8d}, 0x0) sched_setattr(0x0, &(0x7f0000000040)={0x38, 0x2, 0x0, 0x0, 0x5}, 0x0) r0 = open(&(0x7f00000001c0)='./bus\x00', 0x141042, 0x0) r1 = creat(&(0x7f0000000040)='./bus\x00', 0x0) lseek(r1, 0x4200, 0x0) r2 = creat(&(0x7f0000000000)='./bus\x00', 0x0) io_setup(0x1ff, &(0x7f00000004c0)=0x0) io_submit(r3, 0x1, &(0x7f0000000540)=[&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x1, 0x0, r2, &(0x7f0000000000), 0x10000}]) r4 = open(&(0x7f0000000080)='./bus\x00', 0x0, 0x0) sendfile(r1, r4, 0x0, 0x8400fffffffb) sendfile(r0, r0, 0x0, 0x8080ffffff7e) 04:18:43 executing program 3: ioctl$BTRFS_IOC_SUBVOL_CREATE_V2(0xffffffffffffffff, 0x50009418, &(0x7f0000000600)={{}, 0x0, 0x0, @inherit={0x0, 0x0}, @name="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"}) perf_event_open(&(0x7f000001d000)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = syz_open_dev$tty1(0xc, 0x4, 0x1) writev(r0, &(0x7f00000005c0)=[{&(0x7f0000000040)="9f8194be5ace602f096d09ff00cd66299667b70536342623b372d82fefa01f9a2d83297f99b4e597f4e9fad324868e83f474d0c3549b712f00c51c638e6aea4a8dee825286b31a260e60482bb0b4179b3164", 0xff7c}], 0x1) 04:18:43 executing program 2: r0 = open(&(0x7f0000000300)='./file1\x00', 0x143042, 0x0) ftruncate(r0, 0x200004) sendfile(r0, r0, 0x0, 0x80001d00c0d3) 04:18:43 executing program 5: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_MCAST_MSFILTER(r0, 0x0, 0x30, &(0x7f0000000480)={0x8001, {{0x2, 0x0, @multicast2}}}, 0x90) 04:18:43 executing program 4: clone(0x80000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() write$sndseq(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0, 0x0, 0x0, 0x0, @time, {}, {}, @ext={0x2e, &(0x7f0000000440)="c4c691019919da078a0098d1e0a593b040f7629100f06ee04fa4ea57ff22ea97be19af3dcba01419cd2386ad5915"}}], 0x1c) wait4(0x0, 0x0, 0x80000000, 0x0) vmsplice(0xffffffffffffffff, &(0x7f0000000100)=[{&(0x7f0000000040)}, {&(0x7f0000000000)="0832f497d38350418e4bb321019511dc5df26e9a0b7ecb6974f527cc14538d1efb1ffe03284f6d33265be9c604b293f20e96beeb2aa4c457ac37a3a3f1ce8682500fcecd80", 0x45}], 0x2, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x17) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) r1 = gettid() tkill(r1, 0x26) [ 19.837167][ T25] audit: type=1400 audit(1620361123.533:8): avc: denied { execmem } for pid=1752 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 19.924898][ T1759] cgroup: Unknown subsys name 'perf_event' [ 19.927682][ T1758] cgroup: Unknown subsys name 'perf_event' [ 19.931220][ T1759] cgroup: Unknown subsys name 'net_cls' [ 19.954193][ T1758] cgroup: Unknown subsys name 'net_cls' [ 20.007130][ T1764] cgroup: Unknown subsys name 'perf_event' [ 20.013143][ T1764] cgroup: Unknown subsys name 'net_cls' [ 20.028113][ T1769] cgroup: Unknown subsys name 'perf_event' [ 20.036383][ T1771] cgroup: Unknown subsys name 'perf_event' [ 20.042768][ T1775] cgroup: Unknown subsys name 'perf_event' [ 20.045770][ T1769] cgroup: Unknown subsys name 'net_cls' [ 20.054346][ T1771] cgroup: Unknown subsys name 'net_cls' [ 20.058618][ T1775] cgroup: Unknown subsys name 'net_cls' 04:18:47 executing program 4: clone(0x80000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() write$sndseq(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0, 0x0, 0x0, 0x0, @time, {}, {}, @ext={0x2e, &(0x7f0000000440)="c4c691019919da078a0098d1e0a593b040f7629100f06ee04fa4ea57ff22ea97be19af3dcba01419cd2386ad5915"}}], 0x1c) wait4(0x0, 0x0, 0x80000000, 0x0) vmsplice(0xffffffffffffffff, &(0x7f0000000100)=[{&(0x7f0000000040)}, {&(0x7f0000000000)="0832f497d38350418e4bb321019511dc5df26e9a0b7ecb6974f527cc14538d1efb1ffe03284f6d33265be9c604b293f20e96beeb2aa4c457ac37a3a3f1ce8682500fcecd80", 0x45}], 0x2, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x17) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) r1 = gettid() tkill(r1, 0x26) 04:18:47 executing program 4: clone(0x80000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() write$sndseq(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0, 0x0, 0x0, 0x0, @time, {}, {}, @ext={0x2e, &(0x7f0000000440)="c4c691019919da078a0098d1e0a593b040f7629100f06ee04fa4ea57ff22ea97be19af3dcba01419cd2386ad5915"}}], 0x1c) wait4(0x0, 0x0, 0x80000000, 0x0) vmsplice(0xffffffffffffffff, &(0x7f0000000100)=[{&(0x7f0000000040)}, {&(0x7f0000000000)="0832f497d38350418e4bb321019511dc5df26e9a0b7ecb6974f527cc14538d1efb1ffe03284f6d33265be9c604b293f20e96beeb2aa4c457ac37a3a3f1ce8682500fcecd80", 0x45}], 0x2, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x17) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) r1 = gettid() tkill(r1, 0x26) 04:18:47 executing program 4: clone(0x80000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() write$sndseq(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0, 0x0, 0x0, 0x0, @time, {}, {}, @ext={0x2e, &(0x7f0000000440)="c4c691019919da078a0098d1e0a593b040f7629100f06ee04fa4ea57ff22ea97be19af3dcba01419cd2386ad5915"}}], 0x1c) wait4(0x0, 0x0, 0x80000000, 0x0) vmsplice(0xffffffffffffffff, &(0x7f0000000100)=[{&(0x7f0000000040)}, {&(0x7f0000000000)="0832f497d38350418e4bb321019511dc5df26e9a0b7ecb6974f527cc14538d1efb1ffe03284f6d33265be9c604b293f20e96beeb2aa4c457ac37a3a3f1ce8682500fcecd80", 0x45}], 0x2, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x17) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) r1 = gettid() tkill(r1, 0x26) 04:18:47 executing program 5: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_MCAST_MSFILTER(r0, 0x0, 0x30, &(0x7f0000000480)={0x8001, {{0x2, 0x0, @multicast2}}}, 0x90) 04:18:47 executing program 4: prctl$PR_CAP_AMBIENT(0x2f, 0x4, 0x13) 04:18:47 executing program 5: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_MCAST_MSFILTER(r0, 0x0, 0x30, &(0x7f0000000480)={0x8001, {{0x2, 0x0, @multicast2}}}, 0x90) 04:18:48 executing program 0: r0 = openat(0xffffffffffffffff, &(0x7f00000000c0)='/proc/self/exe\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1800003, 0x12, r0, 0x0) preadv(r0, &(0x7f0000000280), 0x18, 0xd9f, 0x0) r1 = syz_open_dev$tty20(0xc, 0x4, 0x0) ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000040)) close(r1) [ 24.498682][ C1] hrtimer: interrupt took 19872 ns [ 24.658871][ T4498] ================================================================== [ 24.666962][ T4498] BUG: KCSAN: data-race in ext4_ext_handle_unwritten_extents / ext4_mark_iloc_dirty [ 24.676668][ T4498] [ 24.679017][ T4498] write to 0xffff8881061d660c of 2 bytes by task 1784 on cpu 1: [ 24.686636][ T4498] ext4_ext_handle_unwritten_extents+0x659/0xaa0 [ 24.693051][ T4498] ext4_ext_map_blocks+0x719/0x1f00 [ 24.698528][ T4498] ext4_map_blocks+0x70d/0xef0 [ 24.703404][ T4498] ext4_convert_unwritten_extents+0x15a/0x2c0 [ 24.709614][ T4498] ext4_convert_unwritten_io_end_vec+0xa4/0x130 [ 24.715973][ T4498] ext4_end_io_rsv_work+0x198/0x360 [ 24.721258][ T4498] process_one_work+0x3e9/0x8f0 [ 24.726268][ T4498] worker_thread+0x636/0xae0 [ 24.730855][ T4498] kthread+0x1d0/0x1f0 [ 24.734918][ T4498] ret_from_fork+0x1f/0x30 [ 24.739314][ T4498] [ 24.741621][ T4498] read to 0xffff8881061d660c of 4 bytes by task 4498 on cpu 0: [ 24.749138][ T4498] ext4_mark_iloc_dirty+0xd69/0x1750 [ 24.754683][ T4498] __ext4_mark_inode_dirty+0x4db/0x5b0 [ 24.760133][ T4498] ext4_dirty_inode+0x86/0xa0 [ 24.764802][ T4498] __mark_inode_dirty+0x77/0x6c0 [ 24.769730][ T4498] generic_write_end+0x157/0x180 [ 24.774651][ T4498] ext4_da_write_end+0x59b/0x730 [ 24.779568][ T4498] generic_perform_write+0x23e/0x3a0 [ 24.784889][ T4498] ext4_buffered_write_iter+0x2f2/0x3f0 [ 24.790417][ T4498] ext4_file_write_iter+0x2e7/0x11d0 [ 24.795681][ T4498] do_iter_readv_writev+0x2cb/0x360 [ 24.801748][ T4498] do_iter_write+0x112/0x4c0 [ 24.806337][ T4498] vfs_iter_write+0x4c/0x70 [ 24.810820][ T4498] iter_file_splice_write+0x40a/0x750 [ 24.816182][ T4498] direct_splice_actor+0x80/0xa0 [ 24.821102][ T4498] splice_direct_to_actor+0x345/0x650 [ 24.826450][ T4498] do_splice_direct+0xf5/0x170 [ 24.831218][ T4498] do_sendfile+0x773/0xda0 [ 24.835625][ T4498] __x64_sys_sendfile64+0xf2/0x130 [ 24.840713][ T4498] do_syscall_64+0x4a/0x90 [ 24.845197][ T4498] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 24.851085][ T4498] [ 24.853387][ T4498] Reported by Kernel Concurrency Sanitizer on: [ 24.859599][ T4498] CPU: 0 PID: 4498 Comm: syz-executor.1 Not tainted 5.12.0-syzkaller #0 [ 24.867918][ T4498] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.878039][ T4498] ================================================================== [ 24.912327][ T4494] ================================================================== [ 24.920531][ T4494] BUG: KCSAN: data-race in generic_write_end / mpage_process_page_bufs [ 24.928780][ T4494] [ 24.931100][ T4494] write to 0xffff8881061d6780 of 8 bytes by task 4498 on cpu 0: [ 24.938805][ T4494] generic_write_end+0x96/0x180 [ 24.943655][ T4494] ext4_da_write_end+0x59b/0x730 [ 24.948618][ T4494] generic_perform_write+0x23e/0x3a0 [ 24.953994][ T4494] ext4_buffered_write_iter+0x2f2/0x3f0 [ 24.959533][ T4494] ext4_file_write_iter+0x2e7/0x11d0 [ 24.964844][ T4494] do_iter_readv_writev+0x2cb/0x360 [ 24.970036][ T4494] do_iter_write+0x112/0x4c0 [ 24.974621][ T4494] vfs_iter_write+0x4c/0x70 [ 24.979115][ T4494] iter_file_splice_write+0x40a/0x750 [ 24.984483][ T4494] direct_splice_actor+0x80/0xa0 [ 24.989593][ T4494] splice_direct_to_actor+0x345/0x650 [ 24.994976][ T4494] do_splice_direct+0xf5/0x170 [ 24.999742][ T4494] do_sendfile+0x773/0xda0 [ 25.004154][ T4494] __x64_sys_sendfile64+0xf2/0x130 [ 25.009262][ T4494] do_syscall_64+0x4a/0x90 [ 25.013768][ T4494] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 25.019670][ T4494] [ 25.022013][ T4494] read to 0xffff8881061d6780 of 8 bytes by task 4494 on cpu 1: [ 25.029537][ T4494] mpage_process_page_bufs+0x34/0x560 [ 25.034904][ T4494] mpage_prepare_extent_to_map+0x4e6/0x640 [ 25.040730][ T4494] ext4_writepages+0x9d8/0x1d10 [ 25.045590][ T4494] do_writepages+0x7b/0x150 [ 25.048201][ C0] sched: RT throttling activated [ 25.055259][ T4494] filemap_flush+0x132/0x160 [ 25.059837][ T4494] ext4_alloc_da_blocks+0x4a/0xd0 [ 25.064855][ T4494] ext4_release_file+0x5b/0x1d0 [ 25.069697][ T4494] __fput+0x25b/0x4e0 [ 25.073661][ T4494] ____fput+0x11/0x20 [ 25.077638][ T4494] task_work_run+0xae/0x130 [ 25.082138][ T4494] exit_to_user_mode_prepare+0x156/0x190 [ 25.087766][ T4494] syscall_exit_to_user_mode+0x20/0x40 [ 25.093226][ T4494] do_syscall_64+0x56/0x90 [ 25.097641][ T4494] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 25.103524][ T4494] [ 25.105853][ T4494] Reported by Kernel Concurrency Sanitizer on: [ 25.112087][ T4494] CPU: 1 PID: 4494 Comm: syz-executor.1 Not tainted 5.12.0-syzkaller #0 [ 25.120515][ T4494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.130733][ T4494] ================================================================== [ 25.172654][ T4494] ================================================================== [ 25.180898][ T4494] BUG: KCSAN: data-race in ext4_writepages / generic_write_end [ 25.188443][ T4494] [ 25.190762][ T4494] write to 0xffff8881061d6780 of 8 bytes by task 4498 on cpu 0: [ 25.198384][ T4494] generic_write_end+0x96/0x180 [ 25.203233][ T4494] ext4_da_write_end+0x59b/0x730 [ 25.208520][ T4494] generic_perform_write+0x23e/0x3a0 [ 25.213980][ T4494] ext4_buffered_write_iter+0x2f2/0x3f0 [ 25.219537][ T4494] ext4_file_write_iter+0x2e7/0x11d0 [ 25.224853][ T4494] do_iter_readv_writev+0x2cb/0x360 [ 25.230050][ T4494] do_iter_write+0x112/0x4c0 [ 25.234643][ T4494] vfs_iter_write+0x4c/0x70 [ 25.239152][ T4494] iter_file_splice_write+0x40a/0x750 [ 25.244612][ T4494] direct_splice_actor+0x80/0xa0 [ 25.249552][ T4494] splice_direct_to_actor+0x345/0x650 [ 25.254926][ T4494] do_splice_direct+0xf5/0x170 [ 25.259712][ T4494] do_sendfile+0x773/0xda0 [ 25.264137][ T4494] __x64_sys_sendfile64+0xf2/0x130 [ 25.269258][ T4494] do_syscall_64+0x4a/0x90 [ 25.273801][ T4494] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 25.279708][ T4494] [ 25.282026][ T4494] read to 0xffff8881061d6780 of 8 bytes by task 4494 on cpu 1: [ 25.289650][ T4494] ext4_writepages+0x1008/0x1d10 [ 25.294626][ T4494] do_writepages+0x7b/0x150 [ 25.299123][ T4494] filemap_flush+0x132/0x160 [ 25.303799][ T4494] ext4_alloc_da_blocks+0x4a/0xd0 [ 25.308986][ T4494] ext4_release_file+0x5b/0x1d0 [ 25.313840][ T4494] __fput+0x25b/0x4e0 [ 25.317814][ T4494] ____fput+0x11/0x20 [ 25.321785][ T4494] task_work_run+0xae/0x130 [ 25.326364][ T4494] exit_to_user_mode_prepare+0x156/0x190 [ 25.331992][ T4494] syscall_exit_to_user_mode+0x20/0x40 [ 25.337449][ T4494] do_syscall_64+0x56/0x90 [ 25.341903][ T4494] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 25.347795][ T4494] [ 25.350107][ T4494] Reported by Kernel Concurrency Sanitizer on: [ 25.356245][ T4494] CPU: 1 PID: 4494 Comm: syz-executor.1 Not tainted 5.12.0-syzkaller #0 [ 25.364567][ T4494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.374913][ T4494] ================================================================== 04:18:49 executing program 1: prlimit64(0x0, 0xe, &(0x7f0000000280)={0xc, 0x8d}, 0x0) sched_setattr(0x0, &(0x7f0000000040)={0x38, 0x2, 0x0, 0x0, 0x5}, 0x0) r0 = open(&(0x7f00000001c0)='./bus\x00', 0x141042, 0x0) r1 = creat(&(0x7f0000000040)='./bus\x00', 0x0) lseek(r1, 0x4200, 0x0) r2 = creat(&(0x7f0000000000)='./bus\x00', 0x0) io_setup(0x1ff, &(0x7f00000004c0)=0x0) io_submit(r3, 0x1, &(0x7f0000000540)=[&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x1, 0x0, r2, &(0x7f0000000000), 0x10000}]) r4 = open(&(0x7f0000000080)='./bus\x00', 0x0, 0x0) sendfile(r1, r4, 0x0, 0x8400fffffffb) sendfile(r0, r0, 0x0, 0x8080ffffff7e) 04:18:49 executing program 4: prctl$PR_CAP_AMBIENT(0x2f, 0x4, 0x13) 04:18:49 executing program 2: r0 = open(&(0x7f0000000300)='./file1\x00', 0x143042, 0x0) ftruncate(r0, 0x200004) sendfile(r0, r0, 0x0, 0x80001d00c0d3) 04:18:49 executing program 5: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_MCAST_MSFILTER(r0, 0x0, 0x30, &(0x7f0000000480)={0x8001, {{0x2, 0x0, @multicast2}}}, 0x90) 04:18:49 executing program 0: r0 = openat(0xffffffffffffffff, &(0x7f00000000c0)='/proc/self/exe\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1800003, 0x12, r0, 0x0) preadv(r0, &(0x7f0000000280), 0x18, 0xd9f, 0x0) r1 = syz_open_dev$tty20(0xc, 0x4, 0x0) ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000040)) close(r1) 04:18:49 executing program 3: ioctl$BTRFS_IOC_SUBVOL_CREATE_V2(0xffffffffffffffff, 0x50009418, &(0x7f0000000600)={{}, 0x0, 0x0, @inherit={0x0, 0x0}, @name="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"}) perf_event_open(&(0x7f000001d000)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = syz_open_dev$tty1(0xc, 0x4, 0x1) writev(r0, &(0x7f00000005c0)=[{&(0x7f0000000040)="9f8194be5ace602f096d09ff00cd66299667b70536342623b372d82fefa01f9a2d83297f99b4e597f4e9fad324868e83f474d0c3549b712f00c51c638e6aea4a8dee825286b31a260e60482bb0b4179b3164", 0xff7c}], 0x1) 04:18:49 executing program 5: prlimit64(0x0, 0xe, &(0x7f0000000280)={0xc, 0x8d}, 0x0) sched_setattr(0x0, &(0x7f0000000040)={0x38, 0x2, 0x0, 0x0, 0x5}, 0x0) r0 = open(&(0x7f00000001c0)='./bus\x00', 0x141042, 0x0) r1 = creat(&(0x7f0000000040)='./bus\x00', 0x0) lseek(r1, 0x4200, 0x0) r2 = creat(&(0x7f0000000000)='./bus\x00', 0x0) io_setup(0x1ff, &(0x7f00000004c0)=0x0) io_submit(r3, 0x1, &(0x7f0000000540)=[&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x1, 0x0, r2, &(0x7f0000000000), 0x10000}]) r4 = open(&(0x7f0000000080)='./bus\x00', 0x0, 0x0) sendfile(r1, r4, 0x0, 0x8400fffffffb) sendfile(r0, r0, 0x0, 0x8080ffffff7e) 04:18:49 executing program 0: r0 = openat(0xffffffffffffffff, &(0x7f00000000c0)='/proc/self/exe\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1800003, 0x12, r0, 0x0) preadv(r0, &(0x7f0000000280), 0x18, 0xd9f, 0x0) r1 = syz_open_dev$tty20(0xc, 0x4, 0x0) ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000040)) close(r1) 04:18:49 executing program 4: prctl$PR_CAP_AMBIENT(0x2f, 0x4, 0x13) 04:18:51 executing program 4: prctl$PR_CAP_AMBIENT(0x2f, 0x4, 0x13) 04:18:51 executing program 3: ioctl$BTRFS_IOC_SUBVOL_CREATE_V2(0xffffffffffffffff, 0x50009418, &(0x7f0000000600)={{}, 0x0, 0x0, @inherit={0x0, 0x0}, @name="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"}) perf_event_open(&(0x7f000001d000)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = syz_open_dev$tty1(0xc, 0x4, 0x1) writev(r0, &(0x7f00000005c0)=[{&(0x7f0000000040)="9f8194be5ace602f096d09ff00cd66299667b70536342623b372d82fefa01f9a2d83297f99b4e597f4e9fad324868e83f474d0c3549b712f00c51c638e6aea4a8dee825286b31a260e60482bb0b4179b3164", 0xff7c}], 0x1) 04:18:51 executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000280)={0xc, 0x8d}, 0x0) sched_setattr(0x0, &(0x7f0000000040)={0x38, 0x2, 0x0, 0x0, 0x5}, 0x0) r0 = open(&(0x7f00000001c0)='./bus\x00', 0x141042, 0x0) r1 = creat(&(0x7f0000000040)='./bus\x00', 0x0) lseek(r1, 0x4200, 0x0) r2 = creat(&(0x7f0000000000)='./bus\x00', 0x0) io_setup(0x1ff, &(0x7f00000004c0)=0x0) io_submit(r3, 0x1, &(0x7f0000000540)=[&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x1, 0x0, r2, &(0x7f0000000000), 0x10000}]) r4 = open(&(0x7f0000000080)='./bus\x00', 0x0, 0x0) sendfile(r1, r4, 0x0, 0x8400fffffffb) sendfile(r0, r0, 0x0, 0x8080ffffff7e)