syzkaller login: [ 227.156743][ T1831] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 227.226336][ T1831] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 227.274372][ T1831] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 227.332861][ T1831] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 227.366676][ T1831] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:38356' (ECDSA) to the list of known hosts. 1970/01/01 00:04:23 fuzzer started 1970/01/01 00:04:35 dialing manager at localhost:34709 [ 280.050800][ T1998] cgroup: Unknown subsys name 'net' [ 280.822841][ T1998] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:04:40 syscalls: 2793 1970/01/01 00:04:40 code coverage: enabled 1970/01/01 00:04:40 comparison tracing: enabled 1970/01/01 00:04:40 extra coverage: ioctl(KCOV_DISABLE) failed: invalid argument 1970/01/01 00:04:40 delay kcov mmap: mmap returned an invalid pointer 1970/01/01 00:04:40 setuid sandbox: enabled 1970/01/01 00:04:40 namespace sandbox: enabled 1970/01/01 00:04:40 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:04:40 fault injection: enabled 1970/01/01 00:04:40 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:04:40 net packet injection: enabled 1970/01/01 00:04:40 net device setup: enabled 1970/01/01 00:04:40 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:04:40 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:04:40 USB emulation: enabled 1970/01/01 00:04:40 hci packet injection: /dev/vhci does not exist 1970/01/01 00:04:40 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:04:40 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 1970/01/01 00:04:45 fetching corpus: 50, signal 33102/34910 (executing program) 1970/01/01 00:04:48 fetching corpus: 100, signal 44121/47587 (executing program) 1970/01/01 00:04:53 fetching corpus: 150, signal 57171/62120 (executing program) 1970/01/01 00:04:56 fetching corpus: 200, signal 63795/70243 (executing program) 1970/01/01 00:04:59 fetching corpus: 250, signal 71574/79430 (executing program) 1970/01/01 00:05:00 fetching corpus: 300, signal 75062/84342 (executing program) 1970/01/01 00:05:02 fetching corpus: 350, signal 78811/89481 (executing program) 1970/01/01 00:05:04 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fetching corpus: 6350, signal 215251/309701 (executing program) 1970/01/01 00:09:30 fetching corpus: 6400, signal 215635/310537 (executing program) 1970/01/01 00:09:31 fetching corpus: 6450, signal 216178/311401 (executing program) [ 1017.033060][ T27] INFO: task jbd2/vda-8:1767 blocked for more than 430 seconds. [ 1017.046014][ T27] Not tainted 5.15.0-rc1-syzkaller-00001-g64a19591a293 #0 [ 1017.049688][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1017.052120][ T27] task:jbd2/vda-8 state:D stack: 0 pid: 1767 ppid: 2 flags:0x00000000 [ 1017.055319][ T27] Call Trace: [ 1017.056929][ T27] [] __schedule+0x506/0x1048 [ 1017.062061][ T27] [] schedule+0x66/0x168 [ 1017.064167][ T27] [] io_schedule+0x5a/0x88 [ 1017.065919][ T27] [] bit_wait_io+0x12/0x70 [ 1017.067798][ T27] [] __wait_on_bit+0x7c/0xf6 [ 1017.070821][ T27] [] out_of_line_wait_on_bit+0x7a/0x92 [ 1017.073689][ T27] [] __wait_on_buffer+0x68/0x7c [ 1017.075409][ T27] [] jbd2_journal_commit_transaction+0x2b6a/0x4716 [ 1017.077614][ T27] [] kjournald2+0x11a/0x54e [ 1017.080368][ T27] [] kthread+0x25c/0x2c6 [ 1017.081905][ T27] [] ret_from_exception+0x0/0x14 [ 1017.083775][ T27] [ 1017.083775][ T27] Showing all locks held in the system: [ 1017.085426][ T27] 1 lock held by khungtaskd/27: [ 1017.086915][ T27] #0: ffffffff83d2b3e8 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x32/0x1fa [ 1017.094144][ T27] 6 locks held by kworker/u4:5/909: [ 1017.095571][ T27] 2 locks held by getty/1956: [ 1017.096966][ T27] #0: ffffffe00da3d098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x48 [ 1017.101344][ T27] #1: ffffffd0107f52e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x9a0/0xafa [ 1017.104571][ T27] [ 1017.105319][ T27] ============================================= [ 1017.105319][ T27] [ 1017.107799][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 1017.110135][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc1-syzkaller-00001-g64a19591a293 #0 [ 1017.112548][ T27] Hardware name: riscv-virtio,qemu (DT) [ 1017.114094][ T27] Call Trace: [ 1017.115204][ T27] [] dump_backtrace+0x2e/0x3c [ 1017.117423][ T27] SMP: stopping secondary CPUs [ 1019.324639][ T27] SMP: failed to stop secondary CPUs 0-1 [ 1019.328453][ T27] Rebooting in 86400 seconds.. VM DIAGNOSIS: 06:41:17 Registers: info registers vcpu 0 pc ffffffff803eb206 mhartid 0000000000000000 mstatus 00000000000000a0 mip 00000000000002a2 mie 000000000000022a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff80005050 mepc ffffffff803eb206 sepc ffffffff803f15be mcause 8000000000000003 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff803eb1e8 x2/sp ffffffe009db72d0 x3/gp ffffffff83f9a558 x4/tp ffffffe00c8617c0 x5/t0 ffffffe006ffbae0 x6/t1 0000000000000001 x7/t2 0000000000000001 x8/s0 ffffffe009db7360 x9/s1 0000000000000010 x10/a0 ffffffe05adc8880 x11/a1 0000000000000003 x12/a2 1ffffffc0b5b9110 x13/a3 ffffffff800db014 x14/a4 e75ea13f26016100 x15/a5 0000000000080800 x16/a6 0000000000f00000 x17/a7 ffffffff803eb1a8 x18/s2 ffffffe05add73e0 x19/s3 0000000000000a20 x20/s4 ffffffff85302728 x21/s5 ffffffff83f9e558 x22/s6 ffffffff821cf56a x23/s7 0000000000000000 x24/s8 0000000000081000 x25/s9 ffffffe05ade01b0 x26/s10 ffffffe005714500 x27/s11 0000000000000000 x28/t3 e75ea13f26016100 x29/t4 ffffffc40b5bb321 x30/t5 ffffffc40b5bb322 x31/t6 ffffffe006ffb878 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 414fffffe0000000 f3/ft3 43e0000000000000 f4/ft4 3ffe000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 pc ffffffff800d139c mhartid 0000000000000001 mstatus 00000000000001a0 mip 00000000000000a0 mie 000000000000020a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff80005050 mepc ffffffff801b1c44 sepc ffffffff801b1c44 mcause 8000000000000007 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff82bd7058 x2/sp ffffffe0079ff7a0 x3/gp ffffffff83f9a558 x4/tp ffffffe0077aaf80 x5/t0 0000000000046000 x6/t1 ffffffc40b5beb21 x7/t2 0000000000000000 x8/s0 ffffffe0079ff7b0 x9/s1 0000000000001000 x10/a0 0000000000000120 x11/a1 ffffffffffffffff x12/a2 1ffffffc0b5beb20 x13/a3 ffffffff80112412 x14/a4 0000000000010000 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffe05adf590b x18/s2 ffffffff85302728 x19/s3 ffffffff83d2bd70 x20/s4 0000000000000000 x21/s5 ffffffff82e27880 x22/s6 ffffffffffffffff x23/s7 ffffffff83f9e0d0 x24/s8 ffffffff85302728 x25/s9 ffffffe05adf57d8 x26/s10 ffffffe0077aaf80 x27/s11 ffffffe0077aaf80 x28/t3 e75ea13f26016100 x29/t4 ffffffc40b5beb21 x30/t5 ffffffc40b5beb22 x31/t6 ffffffe0079ffae8 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 414fffffe0000000 f3/ft3 43e0000000000000 f4/ft4 3ffe000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000