syzkaller login: [ 116.210562][ T2051] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 116.230161][ T2051] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 116.250616][ T2051] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 124.103228][ T1008] ------------[ cut here ]------------ [ 124.104468][ T1008] WARNING: CPU: 1 PID: 1008 at include/linux/cpumask.h:110 __blk_mq_delay_run_hw_queue+0x490/0x664 [ 124.105278][ T1008] Modules linked in: [ 124.105761][ T1008] CPU: 1 PID: 1008 Comm: kworker/u4:4 Tainted: G W 6.0.0-syzkaller-11840-gf2b220ef93ea #0 [ 124.108163][ T1008] Hardware name: linux,dummy-virt (DT) [ 124.110564][ T1008] Workqueue: writeback wb_workfn (flush-253:0) [ 124.113347][ T1008] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 124.114083][ T1008] pc : __blk_mq_delay_run_hw_queue+0x490/0x664 [ 124.115988][ T1008] lr : blk_mq_run_hw_queue+0x1f0/0x2d4 [ 124.120850][ T1008] sp : ffff8000129d62a0 [ 124.121274][ T1008] x29: ffff8000129d62a0 x28: ffff0000112df134 x27: ffff80000de5c000 [ 124.121971][ T1008] x26: ffff0000112df130 x25: 0000000000000000 x24: 1fffe0000225be26 [ 124.122653][ T1008] x23: fffffbffefff6100 x22: 0000000000000000 x21: 0000000000000002 [ 124.123313][ T1008] x20: 0000000000000000 x19: ffff0000112df000 x18: ffff00006a9cbb88 [ 124.123934][ T1008] x17: 0000000000000000 x16: 00000000f1f1f1f1 x15: ffff800008935178 [ 124.124588][ T1008] x14: 1ffff0000253ac32 x13: 0000000000000000 x12: ffff60000225be09 [ 124.125228][ T1008] x11: 1fffe0000225be08 x10: ffff60000225be08 x9 : dfff800000000000 [ 124.125933][ T1008] x8 : ffff0000112df047 x7 : ffff80000de5cb68 x6 : ffff80000de5cd50 [ 124.136887][ T1008] x5 : 1fffe0000225be26 x4 : 0000000000000004 x3 : 1fffe0000211ab9b [ 124.137710][ T1008] x2 : 0000000000000002 x1 : 0000000000000000 x0 : 0000000000000003 [ 124.138378][ T1008] Call trace: [ 124.138705][ T1008] __blk_mq_delay_run_hw_queue+0x490/0x664 [ 124.139197][ T1008] blk_mq_run_hw_queue+0x1f0/0x2d4 [ 124.139576][ T1008] blk_mq_sched_insert_requests+0x200/0x870 [ 124.139964][ T1008] blk_mq_flush_plug_list+0x2a8/0xd00 [ 124.140360][ T1008] __blk_flush_plug+0x74/0x160 [ 124.140740][ T1008] io_schedule+0xa8/0x114 [ 124.141162][ T1008] bit_wait_io+0x18/0xbc [ 124.141542][ T1008] __wait_on_bit_lock+0x134/0x240 [ 124.141927][ T1008] out_of_line_wait_on_bit_lock+0xd0/0x110 [ 124.142344][ T1008] __lock_buffer+0x5c/0x90 [ 124.142702][ T1008] do_get_write_access+0x3b4/0x10a4 [ 124.143083][ T1008] jbd2_journal_get_write_access+0xec/0x15c [ 124.143492][ T1008] __ext4_journal_get_write_access+0x150/0x3f0 [ 124.143912][ T1008] ext4_mb_mark_diskspace_used+0x25c/0xfbc [ 124.144330][ T1008] ext4_mb_new_blocks+0xcb0/0x47c0 [ 124.144719][ T1008] ext4_ext_map_blocks+0x1ac4/0x5610 [ 124.145065][ T1008] ext4_map_blocks+0x4fc/0x1250 [ 124.145402][ T1008] ext4_writepages+0x1440/0x2b20 [ 124.145833][ T1008] do_writepages+0x140/0x4c0 [ 124.146255][ T1008] __writeback_single_inode+0x140/0x18e4 [ 124.146654][ T1008] writeback_sb_inodes+0x3d0/0xd10 [ 124.147047][ T1008] __writeback_inodes_wb+0xb8/0x1f0 [ 124.147438][ T1008] wb_writeback+0x9d4/0xef4 [ 124.147729][ T1008] wb_workfn+0x7ac/0x1514 [ 124.147978][ T1008] process_one_work+0x780/0x184c [ 124.148358][ T1008] worker_thread+0x3cc/0xc40 [ 124.148731][ T1008] kthread+0x23c/0x2a0 [ 124.149104][ T1008] ret_from_fork+0x10/0x20 [ 124.155664][ T1008] irq event stamp: 151800 [ 124.164671][ T1008] hardirqs last enabled at (151799): [] _raw_spin_unlock_irqrestore+0x90/0xc0 [ 124.165425][ T1008] hardirqs last disabled at (151800): [] el1_dbg+0x24/0x80 [ 124.168003][ T1008] softirqs last enabled at (151342): [] neigh_managed_work+0x168/0x1d0 [ 124.168687][ T1008] softirqs last disabled at (151338): [] neigh_managed_work+0x30/0x1d0 [ 124.169174][ T1008] ---[ end trace 0000000000000000 ]--- Warning: Permanently added '[localhost]:63807' (ECDSA) to the list of known hosts. 1970/01/01 00:02:58 fuzzer started 1970/01/01 00:03:03 connecting to host at localhost:38491 1970/01/01 00:03:04 checking machine... 1970/01/01 00:03:04 checking revisions... 1970/01/01 00:03:06 testing simple program... executing program [ 187.872042][ T2211] cgroup: Unknown subsys name 'net' [ 188.419784][ T2211] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 195.671393][ T2214] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 195.714799][ T2214] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 198.762366][ T2214] device hsr_slave_0 entered promiscuous mode [ 198.834373][ T2214] device hsr_slave_1 entered promiscuous mode executing program [ 200.933248][ T2214] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 201.015822][ T2214] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 201.100335][ T2214] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 201.179271][ T2214] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 203.439454][ T2214] 8021q: adding VLAN 0 to HW filter on device bond0 [ 203.563139][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 203.586319][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready VM DIAGNOSIS: 18:55:13 Registers: info registers vcpu 0 PC=0000aaaae6c3a124 X00=0000000000000000 X01=0097f2334bf65c00 X02=0000000008000000 X03=ffffff80ffffffc8 X04=0000ffffcb041bf8 X05=0000000000000000 X06=0000000000000000 X07=10c40bda2ffa752c X08=0000000000000000 X09=c173e0a0c361c8b5 X10=0000000000000000 X11=ab30405ea2b6df5f X12=0000000000000000 X13=f213690f520d50c0 X14=0000000000000000 X15=d037d8e8478ecc25 X16=0000aaaae6cab848 X17=0000ffff9fb03380 X18=00000000a23f82dd X19=0000000000000000 X20=0000aaaaeeb98880 X21=0000aaaae6cab000 X22=0000ffffcb041dd3 X23=0000aaaae6c68ced X24=0000ffffcb041dd4 X25=0000aaaae6c68d8c X26=0000aaaaeeb93590 X27=0000ffffcb041d6c X28=0000000000000001 X29=0000ffffcb041d00 X30=0000aaaae6c3a100 SP=0000ffffcb041d00 PSTATE=80000000 N--- EL0t FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=0000001bcf3a0000:0000000000000000 Q02=0000000000000000:0000000001bc0000 Q03=0000000000000000:0000000000010000 Q04=216e9cf7adb6fb5e:eb07ee3074c2c193 Q05=4994f205c46af679:b300478a53a20b4a Q06=e272b537701fdd13:b1827ffaf61c2ad4 Q07=16bb61ace3bd1ade:02757ecc80afe0e5 Q08=0000000000000000:0000000000000000 Q09=0000000000000000:0000000000000000 Q10=0000000000000000:0000000000000000 Q11=0000000000000000:0000000000000000 Q12=0000000000000000:0000000000000000 Q13=0000000000000000:0000000000000000 Q14=0000000000000000:0000000000000000 Q15=0000000000000000:0000000000000000 Q16=d37a8a41b2d38e28:96109d5ccada87b9 Q17=3c14460a16c3309b:6e7c9f99a6362c1a Q18=b66252026d955f3f:896939c061de31c5 Q19=9ee24cf8c57968b3:fe77a7b4e2610655 Q20=30aeaefe09c9a935:008abf0f967ebb77 Q21=10cf5aa0b34ff382:63b31057c353abc3 Q22=7760c778a894f28d:9e40f3eb70e44eee Q23=28e2365f2c5ba612:276138ec15496436 Q24=6b20657479622d32:3320646e61707865 Q25=d11722c1bdcdea4f:1a20072a4d9a759c Q26=1c819b537ab2bff4:ebc15ef9fa304381 Q27=7800000000000000:000000000000006e Q28=7800000000000000:000000000000006f Q29=7800000000000000:0000000000000070 Q30=7800000000000000:000000000000006e Q31=0000000000000000:0000000000000004 info registers vcpu 1 PC=ffff80000c8f1740 X00=ffff80000cc29240 X01=0000000000000003 X02=1ffff00001e7a749 X03=dfff800000000000 X04=000000005a3c95e7 X05=ffff800010be7960 X06=0000000000000001 X07=0000000000000004 X08=ffff800010be7963 X09=dfff800000000000 X10=ffff70000217cf2c X11=1ffff0000217cf2c X12=ffff70000217cf2d X13=1fffe00001246811 X14=1ffff0000217cf02 X15=ffff00006a9eabc4 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a9eab88 X19=1ffff0000217cf5c X20=00000000ffffcec1 X21=ffff80000c9120cc X22=0000000000000000 X23=0000000000000001 X24=ffff80000de06c48 X25=ffff80000c991f40 X26=0000000000000000 X27=ffff80000914bbc8 X28=ffff80005cbe4000 X29=ffff800010be7650 X30=ffff8000082a389c SP=ffff800010be7650 PSTATE=000000c5 ---- EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=0000000000000020:000000000000726f Q02=0000000000000004:0000000000000020 Q03=8020080280200800:8020080280200000 Q04=8020080280200800:8020080280200800 Q05=0000000000000000:0000000000000000 Q06=0000000000000000:0000000000000000 Q07=8020080280200802:8020080280200802 Q08=0000000000000000:0000000000000000 Q09=0000000000000000:0000000000000000 Q10=0000000000000000:0000000000000000 Q11=0000000000000000:0000000000000000 Q12=0000000000000000:0000000000000000 Q13=0000000000000000:0000000000000000 Q14=0000000000000000:0000000000000000 Q15=0000000000000000:0000000000000000 Q16=4010040140100401:4010040140100401 Q17=a00aa008a00aa008:aaa8aaa8aaa8aaa0 Q18=8020080280200800:8020080280200800 Q19=7caaf58d1a83bc72:b4f9e90ba2327cd8 Q20=1a5fc5fe8066a088:b4453f9ba6564282 Q21=9c327bfa7a390832:72edcfef8448ef00 Q22=a5f43b6ebfabfe90:3fcd5e188b886183 Q23=1611b1b88a23ca42:f01ac27082f70d9f Q24=0000000000000000:0000000000000000 Q25=0000000000000000:0000000000000000 Q26=0000000000000000:0000000000000000 Q27=0000000000000000:0000000000000000 Q28=0000000000000000:0000000000000000 Q29=0000000000000000:0000000000000000 Q30=0000000000000000:0000000000000000 Q31=0000000000000000:0000000000000000