syzkaller login: [ 91.821679][ T58] cfg80211: failed to load regulatory.db Warning: Permanently added '[localhost]:46386' (ED25519) to the list of known hosts. executing program [ 316.767411][ T5354] loop0: detected capacity change from 0 to 32768 [ 316.856079][ T5354] bcachefs (da441363-bb6a-4ab9-999b-c1f40db4fee2): Using encoding defined by superblock: utf8-12.1.0 [ 316.881913][ T5354] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,journal_flush_disabled,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc,no_data_io [ 316.881913][ T5354] allowing incompatible features above 0.0: (unknown version) [ 316.894157][ T5354] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 316.897632][ T5354] bcachefs (loop0): Version upgrade required: [ 316.897632][ T5354] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 316.897632][ T5354] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.25: extent_flags [ 316.897632][ T5354] running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,set_fs_needs_rebalance [ 316.927492][ T5354] bcachefs (loop0): dropping and reconstructing all alloc info [ 316.958362][ T5354] bcachefs (loop0): accounting_read... done [ 316.968646][ T5354] bcachefs (loop0): alloc_read... done [ 316.971006][ T5354] bcachefs (loop0): snapshots_read... done [ 316.979461][ T5354] bcachefs (loop0): done starting filesystem [ 317.032248][ T5354] syz-executor141 (5354) used greatest stack depth: 19816 bytes left [ 317.044889][ T5353] bcachefs (loop0): shutting down [ 578.212338][ T26] INFO: task syz-executor141:5353 blocked for more than 143 seconds. [ 578.215820][ T26] Not tainted 6.15.0-rc7-syzkaller #0 [ 578.219196][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 578.228866][ T26] task:syz-executor141 state:D stack:24280 pid:5353 tgid:5353 ppid:5352 task_flags:0x400100 flags:0x00004002 [ 578.234334][ T26] Call Trace: [ 578.235912][ T26] [ 578.237253][ T26] __schedule+0x16e2/0x4cd0 [ 578.239451][ T26] ? __lock_acquire+0xaac/0xd20 [ 578.242091][ T26] ? do_raw_spin_lock+0x121/0x290 [ 578.244315][ T26] ? schedule+0x165/0x360 [ 578.246239][ T26] ? __pfx___schedule+0x10/0x10 [ 578.248411][ T26] ? schedule+0x91/0x360 [ 578.250269][ T26] schedule+0x165/0x360 [ 578.252724][ T26] __bch2_fs_stop+0x3ce/0x5a0 [ 578.254948][ T26] ? __pfx___bch2_fs_stop+0x10/0x10 [ 578.257281][ T26] ? __pfx_autoremove_wake_function+0x10/0x10 [ 578.259957][ T26] ? __pfx_evict_inodes+0x10/0x10 [ 578.262786][ T26] ? bch2_sync_fs+0x107/0x2e0 [ 578.264899][ T26] ? __pfx_bch2_put_super+0x10/0x10 [ 578.267159][ T26] generic_shutdown_super+0x135/0x2c0 [ 578.269490][ T26] bch2_kill_sb+0x41/0x50 [ 578.272286][ T26] deactivate_locked_super+0xb9/0x130 [ 578.274638][ T26] cleanup_mnt+0x425/0x4c0 [ 578.276648][ T26] ? lockdep_hardirqs_on+0x9c/0x150 [ 578.278991][ T26] task_work_run+0x1d1/0x260 [ 578.281067][ T26] ? __pfx_task_work_run+0x10/0x10 [ 578.284080][ T26] resume_user_mode_work+0x5e/0x80 [ 578.286358][ T26] syscall_exit_to_user_mode+0x9a/0x120 [ 578.288807][ T26] do_syscall_64+0x103/0x210 [ 578.290890][ T26] ? clear_bhb_loop+0x60/0xb0 [ 578.293600][ T26] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 578.296236][ T26] RIP: 0033:0x7f9bb747ba87 [ 578.298077][ T26] RSP: 002b:00007ffc60c56f58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 578.301810][ T26] RAX: 0000000000000000 RBX: 000000000004d406 RCX: 00007f9bb747ba87 [ 578.304994][ T26] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc60c57010 [ 578.308149][ T26] RBP: 00007ffc60c57010 R08: 0000000000000000 R09: 0000000000000000 [ 578.311807][ T26] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc60c58080 [ 578.315273][ T26] R13: 000055557e73b7c0 R14: 431bde82d7b634db R15: 00007ffc60c580a0 [ 578.318677][ T26] [ 578.320051][ T26] [ 578.320051][ T26] Showing all locks held in the system: [ 578.323859][ T26] 1 lock held by khungtaskd/26: [ 578.326025][ T26] #0: ffffffff8df3dee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 578.330337][ T26] 1 lock held by klogd/4708: [ 578.332874][ T26] #0: ffff88801fe39b58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 578.337173][ T26] 2 locks held by getty/5108: [ 578.339270][ T26] #0: ffff888000c1e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 578.343774][ T26] #1: ffffc9000018e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 578.348081][ T26] 1 lock held by syz-executor141/5353: [ 578.350380][ T26] #0: ffff888035b4c0e0 (&type->s_umount_key#42){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 [ 578.355145][ T26] [ 578.356235][ T26] ============================================= [ 578.356235][ T26] [ 578.359827][ T26] NMI backtrace for cpu 0 [ 578.359837][ T26] CPU: 0 UID: 0 PID: 26 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) [ 578.359850][ T26] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 578.359856][ T26] Call Trace: [ 578.359863][ T26] [ 578.359869][ T26] dump_stack_lvl+0x189/0x250 [ 578.359888][ T26] ? __wake_up_klogd+0xd9/0x110 [ 578.359904][ T26] ? __pfx_dump_stack_lvl+0x10/0x10 [ 578.359920][ T26] ? __pfx__printk+0x10/0x10 [ 578.359939][ T26] nmi_cpu_backtrace+0x39e/0x3d0 [ 578.359955][ T26] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 578.359965][ T26] ? _printk+0xcf/0x120 [ 578.359979][ T26] ? __pfx__printk+0x10/0x10 [ 578.359991][ T26] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 578.360005][ T26] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 578.360019][ T26] watchdog+0xfee/0x1030 [ 578.360035][ T26] ? watchdog+0x1de/0x1030 [ 578.360053][ T26] kthread+0x70e/0x8a0 [ 578.360069][ T26] ? __pfx_watchdog+0x10/0x10 [ 578.360083][ T26] ? __pfx_kthread+0x10/0x10 [ 578.360097][ T26] ? __pfx_kthread+0x10/0x10 [ 578.360110][ T26] ? _raw_spin_unlock_irq+0x23/0x50 [ 578.360123][ T26] ? lockdep_hardirqs_on+0x9c/0x150 [ 578.360137][ T26] ? __pfx_kthread+0x10/0x10 [ 578.360150][ T26] ret_from_fork+0x4b/0x80 [ 578.360162][ T26] ? __pfx_kthread+0x10/0x10 [ 578.360175][ T26] ret_from_fork_asm+0x1a/0x30 [ 578.360196][ T26] [ 578.360202][ T26] Kernel panic - not syncing: hung_task: blocked tasks [ 578.423520][ T26] CPU: 0 UID: 0 PID: 26 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) [ 578.427935][ T26] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 578.432550][ T26] Call Trace: [ 578.433874][ T26] [ 578.435329][ T26] dump_stack_lvl+0x99/0x250 [ 578.437428][ T26] ? __asan_memcpy+0x40/0x70 [ 578.439626][ T26] ? __pfx_dump_stack_lvl+0x10/0x10 [ 578.442040][ T26] ? __pfx__printk+0x10/0x10 [ 578.444262][ T26] panic+0x2db/0x790 [ 578.446152][ T26] ? __pfx_panic+0x10/0x10 [ 578.448016][ T26] ? nmi_backtrace_stall_check+0x433/0x440 [ 578.450466][ T26] ? irq_work_queue+0xc3/0x140 [ 578.452638][ T26] watchdog+0x102d/0x1030 [ 578.454415][ T26] ? watchdog+0x1de/0x1030 [ 578.456263][ T26] kthread+0x70e/0x8a0 [ 578.457974][ T26] ? __pfx_watchdog+0x10/0x10 [ 578.459839][ T26] ? __pfx_kthread+0x10/0x10 [ 578.461361][ T26] ? __pfx_kthread+0x10/0x10 [ 578.462894][ T26] ? _raw_spin_unlock_irq+0x23/0x50 [ 578.464664][ T26] ? lockdep_hardirqs_on+0x9c/0x150 [ 578.466862][ T26] ? __pfx_kthread+0x10/0x10 [ 578.468908][ T26] ret_from_fork+0x4b/0x80 [ 578.470699][ T26] ? __pfx_kthread+0x10/0x10 [ 578.472771][ T26] ret_from_fork_asm+0x1a/0x30 [ 578.474875][ T26] [ 578.476570][ T26] Kernel Offset: disabled [ 578.478590][ T26] Rebooting in 86400 seconds.. VM DIAGNOSIS: 03:29:31 Registers: info registers vcpu 0 CPU#0 RAX=0000000000000037 RBX=0000000000000037 RCX=0000000000000000 RDX=00000000000003f8 RSI=0000000000000000 RDI=0000000000000020 RBP=00000000000003f8 RSP=ffffc900004df770 R8 =ffff888000d40237 R9 =1ffff110001a8046 R10=dffffc0000000000 R11=ffffffff853e18b0 R12=dffffc0000000000 R13=ffffffff99850c73 R14=ffffffff99b55c40 R15=0000000000000000 RIP=ffffffff853e192c RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 0000000000000000 ffffffff 00c00000 GS =0000 ffff88808d6c2000 ffffffff 00c00000 LDT=0000 0000000000000000 ffffffff 00c00000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000055ae9c777168 CR3=000000000dd38000 CR4=00352ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 Opmask00=000000000000002b Opmask01=0000000000000001 Opmask02=00000000bfffbfff Opmask03=0000000000000000 Opmask04=0000000000000000 Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000 ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 abc21ed6938b6693 c99528cb9e17d9dd ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 df9f0a5d0cae55a5 409be25ed5240d95 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 4cfaca2df9eb7f98 1319d9d7a62856db ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 3e809f371aff62c7 10b3a981256ec150 ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000540 ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000040 ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 1a1a4732fd1f1fbb 64a87e643019fe80 ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ca131cb475a11ff5 be09a09009a134b0 ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 af288468556d487e 96746d9e459d84cf ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 4c8b19fcaa868c24 9de3545c0554eadd ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 3ab5d058ca5bd80f dd122921a193f513 ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 7e106d74004403c6 d2accc44837a47ba ZMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 a54ff53a3c6ef372 bb67ae856a09e667 ZMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 5be0cd191f83d9ab 9b05688c510e527f ZMM16=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2525252525252525 2525252525252525 2525252525252525 2525252525252525 ZMM17=0000000000000000 0000000000000000 0000000000000000 0000000000000000 6d6f726620796c64 657463657078656e 7520646574697865 2073257325732500 ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 484a5743055c4941 40514640555d404b 50054140514c5d40 0556005600560000 ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fff1cf8e436 00007fff1cf8e42a ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 00000000000000a0 00007f3682f9db20 000055ae9c79d700 0000000000000000 ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fff1cf8e436 00007fff1cf8e42a 00007fff1cf8e3ad ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fff1cf8e3a2 00007fff1cf8e394 00007fff1cf8e387 00007fff1cf8e379 ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fff1cf8e36c 00007fff1cf8e359 00007fff1cf8e34b 00007fff1cf8e33b ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 000600148c5c35c6 755e029200000000 000080fe00010014 00000005fd80400a ZMM25=0000000000000000 0000000000000000 0000000000000000 0000000000000000 4c3d200a33656664 642020323320650a 002061206265200a 330a616200204841 ZMM26=0000000000000000 0000000000000000 0000000000000000 0000000000000000 bfbfbfbfbfbfbfbf bfbfbfbfbfbfbfbf bfbfbfbfbfbfbfbf bfbff52532232d20 ZMM27=0000000000000000 0000000000000000 0000000000000000 0000000000000000 262821df2e2e33df 3228df3232202b22 df312e232d2435bf 2324353124322431 ZMM28=0000000000000000 0000000000000000 0000000000000000 0000000000000000 4141414141414141 4141414141414141 4141414141414141 4141414141414141 ZMM29=0000000000000000 0000000000000000 0000000000000000 0000000000000000 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a ZMM30=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2020202020202020 2020202020202020 2020202020202020 2020202020202020 ZMM31=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000