Extracting prog: 6m28.622050618s Minimizing prog: 1h49m41.38316435s Simplifying prog options: 13m42.686368718s Extracting C: 6m17.718629764s Simplifying C: 0s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000000)={0x18}, 0x18) (async) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program crashed: INFO: task hung in iterate_supers single: successfully extracted reproducer found reproducer with 7 syscalls minimizing guilty program testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000000)={0x18}, 0x18) (async) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r1 = dup(r0) write$FUSE_BMAP(r1, &(0x7f0000000000)={0x18}, 0x18) (async) write$FUSE_DIRENTPLUS(r1, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_BMAP-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000000)={0x18}, 0x18) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program crashed: INFO: task hung in iterate_supers testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$FUSE_DIRENTPLUS(0xffffffffffffffff, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = dup(0xffffffffffffffff) write$FUSE_DIRENTPLUS(r0, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX, @ANYBLOB=',wfdno=', @ANYRESHEX, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(0x0, 0x0) r0 = dup(0xffffffffffffffff) write$FUSE_DIRENTPLUS(r0, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX, @ANYBLOB=',wfdno=', @ANYRESHEX, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, 0x0, 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, 0x0, &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', 0x0, 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r1 = dup(r0) write$FUSE_DIRENTPLUS(r1, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, 0x0) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r1 = dup(r0) write$FUSE_DIRENTPLUS(r1, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB, @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB, @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m16.953380278s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program did not crash testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program crashed: INFO: task hung in iterate_supers validation run: crashed=true testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program crashed: INFO: task hung in iterate_supers validation run: crashed=true testing program (duration=6m16.953380278s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-pipe2$9p-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-quotactl$Q_SYNC detailed listing: executing program 0: syz_mount_image$ext4(0x0, &(0x7f0000000440)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) pipe2$9p(&(0x7f0000002180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000700)=ANY=[@ANYBLOB="720e"], 0x138) (async) mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000280), 0x0, &(0x7f0000000380)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB]) quotactl$Q_SYNC(0xffffffff80000100, 0x0, 0x0, 0x0) program crashed: INFO: task hung in iterate_supers validation run: crashed=true reproducing took 2h30m16.941210492s repro crashed as (corrupted=false): INFO: task syz.1.444:5798 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.444 state:D stack:27712 pid:5798 ppid:4384 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb9ea98f749 RSP: 002b:00007fb9eb795038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007fb9eabe5fa0 RCX: 00007fb9ea98f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007fb9eaa13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb9eabe6038 R14: 00007fb9eabe5fa0 R15: 00007fff2d8b4d48 INFO: task syz.0.445:5797 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.445 state:D stack:27296 pid:5797 ppid:4381 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7ff478f749 RSP: 002b:00007f7ff56fa038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f7ff49e5fa0 RCX: 00007f7ff478f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f7ff4813f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7ff49e6038 R14: 00007f7ff49e5fa0 R15: 00007ffc298421e8 INFO: task syz.4.446:5806 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.446 state:D stack:27296 pid:5806 ppid:4392 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f034dd8f749 RSP: 002b:00007f034eb6d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f034dfe6090 RCX: 00007f034dd8f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f034de13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f034dfe6128 R14: 00007f034dfe6090 R15: 00007ffc4c2593a8 INFO: task syz.2.447:5804 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.447 state:D stack:27296 pid:5804 ppid:4389 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f55da38f749 RSP: 002b:00007f55db163038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f55da5e5fa0 RCX: 00007f55da38f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f55da413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f55da5e6038 R14: 00007f55da5e5fa0 R15: 00007ffce51a2948 INFO: task syz.5.448:5840 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.448 state:D stack:27296 pid:5840 ppid:5813 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f722d78f749 RSP: 002b:00007f722e6dd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f722d9e5fa0 RCX: 00007f722d78f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f722d813f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f722d9e6038 R14: 00007f722d9e5fa0 R15: 00007ffd2b76b998 Showing all locks held in the system: 3 locks held by kworker/0:0/7: #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc900000c7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffff888059125240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x26b/0x32b0 drivers/net/netdevsim/fib.c:1491 4 locks held by kworker/u4:1/11: #0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:263 #3: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #3: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x830 kernel/rcu/tree_exp.h:962 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c92bab0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c92c2d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 3 locks held by kworker/u4:2/40: 2 locks held by getty/4028: #0: ffff88814ca1e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41b/0x1380 drivers/tty/n_tty.c:2198 3 locks held by kworker/0:3/4285: #0: ffff88802f3b1138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc900040c7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x14d0 net/ipv6/addrconf.c:4131 3 locks held by kworker/1:17/4350: #0: ffff88802f3b1138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc90004617d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x14d0 net/ipv6/addrconf.c:4131 1 lock held by syz.1.444/5798: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.444/5800: #0: ffff88806013e0e0 (&type->s_umount_key#70/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.0.445/5797: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.446/5806: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.447/5804: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.448/5840: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.451/5943: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.450/5946: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.9.452/5950: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.449/5951: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.3.453/5973: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.0.454/6023: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.456/6075: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.455/6083: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.457/6087: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.458/6093: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.459/6121: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.460/6191: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 2 locks held by kworker/0:8/6223: #0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc9000ed67d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 1 lock held by syz.3.463/6226: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.461/6230: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.9.462/6232: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.0.464/6253: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.465/6277: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.466/6355: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.467/6358: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.468/6361: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.469/6388: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.470/6407: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.471/6461: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.3.472/6508: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.9.473/6515: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.0.474/6526: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.475/6533: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.476/6554: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz-executor/6557: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/6568: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/6589: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 2 locks held by syz-executor/6606: #0: ffffffff8db2e6d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x32e/0x5b0 net/core/net_namespace.c:504 #1: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x281/0x740 net/ipv4/ip_tunnel.c:1103 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3f4/0x470 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 40 Comm: kworker/u4:2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: phy35 ieee80211_iface_work RIP: 0010:__kernel_text_address+0xe/0x30 kernel/extable.c:79 Code: c7 c7 c0 df fe 8d e8 a1 f4 7b 00 eb b8 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 53 48 89 fb e8 27 00 00 00 85 c0 0f 95 c0 <48> 81 fb 00 d0 45 8f 0f 93 c1 48 81 fb 68 55 5a 8f 0f 92 c2 20 ca RSP: 0018:ffffc90000b172d8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff815482c8 RCX: 0000000080000001 RDX: ffffc90000b17301 RSI: dffffc0000000000 RDI: ffffffff815482c8 RBP: ffffc90000b17390 R08: ffffc90000b17c30 R09: ffffc90000b17358 R10: fffff52000162e6d R11: 1ffff92000162e6b R12: ffff88801d245940 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000162e6a FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb790719000 CR3: 0000000020765000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc+0xb0/0x240 mm/slab_common.c:949 kmalloc include/linux/slab.h:568 [inline] kzalloc include/linux/slab.h:699 [inline] ieee802_11_parse_elems_full+0xb2/0x1230 net/mac80211/util.c:1503 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2246 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2253 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline] ieee80211_ibss_rx_queued_mgmt+0x3c4/0x2b10 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1679 [inline] ieee80211_iface_work+0x726/0xc80 net/mac80211/iface.c:1733 process_one_work+0x898/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 final repro crashed as (corrupted=false): INFO: task syz.1.444:5798 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.444 state:D stack:27712 pid:5798 ppid:4384 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb9ea98f749 RSP: 002b:00007fb9eb795038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007fb9eabe5fa0 RCX: 00007fb9ea98f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007fb9eaa13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb9eabe6038 R14: 00007fb9eabe5fa0 R15: 00007fff2d8b4d48 INFO: task syz.0.445:5797 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.445 state:D stack:27296 pid:5797 ppid:4381 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7ff478f749 RSP: 002b:00007f7ff56fa038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f7ff49e5fa0 RCX: 00007f7ff478f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f7ff4813f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7ff49e6038 R14: 00007f7ff49e5fa0 R15: 00007ffc298421e8 INFO: task syz.4.446:5806 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.446 state:D stack:27296 pid:5806 ppid:4392 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f034dd8f749 RSP: 002b:00007f034eb6d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f034dfe6090 RCX: 00007f034dd8f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f034de13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f034dfe6128 R14: 00007f034dfe6090 R15: 00007ffc4c2593a8 INFO: task syz.2.447:5804 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.447 state:D stack:27296 pid:5804 ppid:4389 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f55da38f749 RSP: 002b:00007f55db163038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f55da5e5fa0 RCX: 00007f55da38f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f55da413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f55da5e6038 R14: 00007f55da5e5fa0 R15: 00007ffce51a2948 INFO: task syz.5.448:5840 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.448 state:D stack:27296 pid:5840 ppid:5813 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 quota_sync_all fs/quota/quota.c:69 [inline] __do_sys_quotactl fs/quota/quota.c:937 [inline] __se_sys_quotactl+0x33a/0x6b0 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f722d78f749 RSP: 002b:00007f722e6dd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f722d9e5fa0 RCX: 00007f722d78f749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100 RBP: 00007f722d813f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f722d9e6038 R14: 00007f722d9e5fa0 R15: 00007ffd2b76b998 Showing all locks held in the system: 3 locks held by kworker/0:0/7: #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc900000c7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffff888059125240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x26b/0x32b0 drivers/net/netdevsim/fib.c:1491 4 locks held by kworker/u4:1/11: #0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:263 #3: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #3: ffffffff8c930df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x830 kernel/rcu/tree_exp.h:962 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c92bab0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c92c2d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8c92b120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 3 locks held by kworker/u4:2/40: 2 locks held by getty/4028: #0: ffff88814ca1e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41b/0x1380 drivers/tty/n_tty.c:2198 3 locks held by kworker/0:3/4285: #0: ffff88802f3b1138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc900040c7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x14d0 net/ipv6/addrconf.c:4131 3 locks held by kworker/1:17/4350: #0: ffff88802f3b1138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc90004617d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #2: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x14d0 net/ipv6/addrconf.c:4131 1 lock held by syz.1.444/5798: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.444/5800: #0: ffff88806013e0e0 (&type->s_umount_key#70/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.0.445/5797: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.446/5806: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.447/5804: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.448/5840: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.451/5943: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.450/5946: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.9.452/5950: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.449/5951: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.3.453/5973: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.0.454/6023: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.456/6075: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.455/6083: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.457/6087: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.458/6093: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.459/6121: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.460/6191: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 2 locks held by kworker/0:8/6223: #0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 #1: ffffc9000ed67d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a1/0x1160 kernel/workqueue.c:2267 1 lock held by syz.3.463/6226: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.461/6230: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.9.462/6232: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.0.464/6253: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.465/6277: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.466/6355: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.467/6358: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.468/6361: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.469/6388: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.470/6407: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.471/6461: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.3.472/6508: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.9.473/6515: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.0.474/6526: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.475/6533: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.476/6554: #0: ffff88806013e0e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz-executor/6557: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/6568: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/6589: #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x740/0xed0 net/core/rtnetlink.c:6147 2 locks held by syz-executor/6606: #0: ffffffff8db2e6d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x32e/0x5b0 net/core/net_namespace.c:504 #1: ffffffff8db3b3a8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x281/0x740 net/ipv4/ip_tunnel.c:1103 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3f4/0x470 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 40 Comm: kworker/u4:2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: phy35 ieee80211_iface_work RIP: 0010:__kernel_text_address+0xe/0x30 kernel/extable.c:79 Code: c7 c7 c0 df fe 8d e8 a1 f4 7b 00 eb b8 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 53 48 89 fb e8 27 00 00 00 85 c0 0f 95 c0 <48> 81 fb 00 d0 45 8f 0f 93 c1 48 81 fb 68 55 5a 8f 0f 92 c2 20 ca RSP: 0018:ffffc90000b172d8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff815482c8 RCX: 0000000080000001 RDX: ffffc90000b17301 RSI: dffffc0000000000 RDI: ffffffff815482c8 RBP: ffffc90000b17390 R08: ffffc90000b17c30 R09: ffffc90000b17358 R10: fffff52000162e6d R11: 1ffff92000162e6b R12: ffff88801d245940 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000162e6a FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb790719000 CR3: 0000000020765000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc+0xb0/0x240 mm/slab_common.c:949 kmalloc include/linux/slab.h:568 [inline] kzalloc include/linux/slab.h:699 [inline] ieee802_11_parse_elems_full+0xb2/0x1230 net/mac80211/util.c:1503 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2246 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2253 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline] ieee80211_ibss_rx_queued_mgmt+0x3c4/0x2b10 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1679 [inline] ieee80211_iface_work+0x726/0xc80 net/mac80211/iface.c:1733 process_one_work+0x898/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295