program: open(&(0x7f0000000100)='./file0\x00', 0x80ff, 0x36) mmap$IORING_OFF_SQ_RING(&(0x7f0000400000/0xc00000)=nil, 0xc00000, 0x3000002, 0x5d031, 0xffffffffffffffff, 0x0) r0 = openat$fuse(0xffffffffffffff9c, &(0x7f00000001c0), 0x42, 0x0) mount$fuse(0x0, &(0x7f00000020c0)='./file0\x00', &(0x7f0000000180), 0x0, &(0x7f0000002140)=ANY=[@ANYBLOB='fd=', @ANYRESHEX=r0, @ANYBLOB=',rootmode=000000000100000,user_id=', @ANYRESDEC=0x0, @ANYBLOB=',group_id=', @ANYRESDEC=0x0]) read$FUSE(r0, &(0x7f0000006300)={0x2020, 0x0, 0x0, 0x0, 0x0}, 0x2020) write$FUSE_INIT(r0, &(0x7f0000000040)={0x50, 0x0, r1, {0x7, 0x1f, 0x0, 0x10408}}, 0x50) syz_fuse_handle_req(r0, &(0x7f00000021c0)="0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000dc4e00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000ba045abcd5dfc67d00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000081000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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0x2000, &(0x7f00000062c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000300)={0x20}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_fuse_handle_req(r0, &(0x7f0000004200)="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7e6bda6287762532b86eb91f5480915680deb8a91fb8656b7f0109064865d2b846af0861f67d3f720d6e306540cd7b68f095ef3690b88ea93fb6a402ff5697597cda83171f159e85307d1a8c01611189bd4eb4f0453ab88d43ae181a562a76902a67c687514079d6f4304d9a7c0fa24b6e86074ea0a9fd8187c120312078f5ebfa674adc0303734bf8f6b5585943706594192ad64c9f7d9794fb83758924f862855ddd50bff58b522c43d73c03289baec628cd693cab93101b1e473b76532510e10f03e86812fea6f2d6f5467dcf29e6d7cf8524f383a0ded3f0951c3ffb171a6b8a6d97b5fa8899a19f1a3d0e934a1d4741076e4394ba225158f697bf7d5651717c6950229a0be22e8120d76a414edbcd03d505264b7ede8272ccbd6dbdcebaf11daf6a652f6f9eb74ba7a3ecc942892891388005ae5d971e4e79d696564906dffd44845b704a9abc2fa5ba1bb69a548423a08044ad6d0e365db7e6bea0f3844a452759716cb98dcf326001ec90c1c343174098cdf47ea2e13341058ca014d2a30e9ba3c526de72a6e387181bf76a278c9cbc518d8c374a3f1d9802a39464a100903dbec16f8f095f5d82d9d09507281e4f7fe0ce4fbeced193902a5f658af2a4c1d0952dabdc6ae5830b6b5a2c3f5b8d33a73665990822e5f4a7ce5366755a1615543bdf78299c71e890e0bedb6ec277b10a389d6a3ba9c037221421279e51ab50fb115de2076cc99444202e88ebd9d0fbe4e60234b7b761495ac6c9e615ddac8176164a88fb6d6cc2b52672c8949afe3efc1e87a598896bc93e421423844fcaafe65af898a015b3bcaf623ebeef9a57155af5278ceb52b995f7ca466d9e18b05e86380679e0257cff6d0c6750078462f2ee4701d6d8289ed848b877cf5918625b7937060d667c11119881c30809056892352c6c53c01e395af6866ea350e6f21fa3db772c1177c759999973b51e11ffc590800", 0x2000, &(0x7f0000000c80)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000580)={0x78, 0x0, 0x6, {0x0, 0x0, 0x0, {0x4, 0x10000000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3966, 0x3, 0x8000, 0x0, r2, r3, 0xe, 0x4}}}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r4 = openat(0xffffffffffffff9c, &(0x7f000000c380)='./file0\x00', 0x80101, 0x0) write$tcp_congestion(r4, &(0x7f00000000c0)='lp\x00', 0xfffffdef) dup2(r4, r0) openat2$dir(0xffffffffffffff9c, 0x0, 0x0, 0x0) [ 68.574667][ T5310] Bluetooth: hci0: command tx timeout [ 68.796884][ T12] [ 68.798027][ T12] ===================================================== [ 68.801172][ T12] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected [ 68.804399][ T12] syzkaller #0 Not tainted [ 68.806344][ T12] ----------------------------------------------------- [ 68.809358][ T12] kworker/u4:0/12 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 68.812660][ T12] ffffffff995bb110 (&p->sequence){+.-.}-{0:0}, at: __fprop_add_percpu_max+0x10d/0x210 [ 68.816940][ T12] [ 68.816940][ T12] and this task is already holding: [ 68.820044][ T12] ffff888042f5c240 (&xa->xa_lock#12){-...}-{3:3}, at: __folio_end_writeback+0x1da/0x950 [ 68.824606][ T12] which would create a new lock dependency: [ 68.827668][ T12] (&xa->xa_lock#12){-...}-{3:3} -> (&p->sequence){+.-.}-{0:0} [ 68.831429][ T12] [ 68.831429][ T12] but this new dependency connects a HARDIRQ-irq-safe lock: [ 68.835435][ T12] (&xa->xa_lock#12){-...}-{3:3} [ 68.835458][ T12] [ 68.835458][ T12] ... which became HARDIRQ-irq-safe at: [ 68.840810][ T12] lock_acquire+0x120/0x360 [ 68.842825][ T12] _raw_spin_lock_irqsave+0xa7/0xf0 [ 68.845086][ T12] __folio_end_writeback+0x1da/0x950 [ 68.847402][ T12] folio_end_writeback_no_dropbehind+0x151/0x290 [ 68.850186][ T12] folio_end_writeback+0xea/0x220 [ 68.852393][ T12] end_bio_bh_io_sync+0xbd/0x120 [ 68.854619][ T12] blk_update_request+0x57e/0xe60 [ 68.856686][ T12] scsi_end_request+0x7c/0x830 [ 68.858630][ T12] scsi_io_completion+0x131/0x390 [ 68.860681][ T12] ata_qc_complete_multiple+0x1ae/0x280 [ 68.863046][ T12] ahci_handle_port_interrupt+0x3d5/0x610 [ 68.865554][ T12] ahci_handle_port_intr+0x19f/0x2e0 [ 68.867865][ T12] ahci_single_level_irq_intr+0x9b/0xe0 [ 68.870464][ T12] __handle_irq_event_percpu+0x295/0xab0 [ 68.872898][ T12] handle_irq_event+0x8b/0x1e0 [ 68.874989][ T12] handle_edge_irq+0x23b/0xa10 [ 68.877106][ T12] __common_interrupt+0x141/0x1f0 [ 68.879285][ T12] common_interrupt+0xb6/0xe0 [ 68.881406][ T12] asm_common_interrupt+0x26/0x40 [ 68.883644][ T12] _raw_spin_unlock_irqrestore+0xa8/0x110 [ 68.886166][ T12] ata_scsi_queuecmd+0x3f0/0x5c0 [ 68.888262][ T12] scsi_queue_rq+0x1c8e/0x2cc0 [ 68.890344][ T12] blk_mq_dispatch_rq_list+0x4bd/0x1900 [ 68.892649][ T12] __blk_mq_sched_dispatch_requests+0xda4/0x1570 [ 68.895278][ T12] blk_mq_sched_dispatch_requests+0xd7/0x190 [ 68.897821][ T12] blk_mq_run_work_fn+0x22e/0x300 [ 68.900036][ T12] process_scheduled_works+0xade/0x17b0 [ 68.902380][ T12] worker_thread+0x8a0/0xda0 [ 68.904411][ T12] kthread+0x70e/0x8a0 [ 68.906202][ T12] ret_from_fork+0x439/0x7d0 [ 68.908263][ T12] ret_from_fork_asm+0x1a/0x30 [ 68.910412][ T12] [ 68.910412][ T12] to a HARDIRQ-irq-unsafe lock: [ 68.913286][ T12] (&p->sequence){+.-.}-{0:0} [ 68.913307][ T12] [ 68.913307][ T12] ... which became HARDIRQ-irq-unsafe at: [ 68.918611][ T12] ... [ 68.918618][ T12] lock_acquire+0x120/0x360 [ 68.921722][ T12] fprop_new_period+0x1a3/0x3a0 [ 68.923846][ T12] writeout_period+0x8b/0x130 [ 68.925977][ T12] call_timer_fn+0x17b/0x5f0 [ 68.928050][ T12] __run_timer_base+0x61a/0x860 [ 68.930230][ T12] run_timer_softirq+0x103/0x180 [ 68.932430][ T12] handle_softirqs+0x283/0x870 [ 68.934572][ T12] __irq_exit_rcu+0xca/0x1f0 [ 68.936629][ T12] irq_exit_rcu+0x9/0x30 [ 68.938523][ T12] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 68.941033][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 68.943554][ T12] pv_native_safe_halt+0x13/0x20 [ 68.945716][ T12] default_idle+0x13/0x20 [ 68.947627][ T12] default_idle_call+0x73/0xb0 [ 68.949717][ T12] do_idle+0x1e7/0x510 [ 68.951512][ T12] cpu_startup_entry+0x44/0x60 [ 68.953742][ T12] rest_init+0x2de/0x300 [ 68.955617][ T12] start_kernel+0x3ae/0x410 [ 68.957719][ T12] x86_64_start_reservations+0x24/0x30 [ 68.960060][ T12] x86_64_start_kernel+0x143/0x1c0 [ 68.962239][ T12] common_startup_64+0x13e/0x147 [ 68.964463][ T12] [ 68.964463][ T12] other info that might help us debug this: [ 68.964463][ T12] [ 68.968775][ T12] Possible interrupt unsafe locking scenario: [ 68.968775][ T12] [ 68.972278][ T12] CPU0 CPU1 [ 68.974616][ T12] ---- ---- [ 68.976861][ T12] lock(&p->sequence); [ 68.978875][ T12] local_irq_disable(); [ 68.981644][ T12] lock(&xa->xa_lock#12); [ 68.984550][ T12] lock(&p->sequence); [ 68.987395][ T12] [ 68.988928][ T12] lock(&xa->xa_lock#12); [ 68.990956][ T12] [ 68.990956][ T12] *** DEADLOCK *** [ 68.990956][ T12] [ 68.994409][ T12] 5 locks held by kworker/u4:0/12: [ 68.996656][ T12] #0: ffff88801bb13148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 [ 69.001705][ T12] #1: ffffc900001e7bc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 [ 69.007692][ T12] #2: ffff88801e45e0e0 (&type->s_umount_key#50){.+.+}-{4:4}, at: super_trylock_shared+0x20/0xf0 [ 69.012505][ T12] #3: ffff888042f5c638 (&fi->lock){+.+.}-{3:3}, at: fuse_iomap_writeback_range+0x818/0x1800 [ 69.016639][ T12] #4: ffff888042f5c240 (&xa->xa_lock#12){-...}-{3:3}, at: __folio_end_writeback+0x1da/0x950 [ 69.021296][ T12] [ 69.021296][ T12] the dependencies between HARDIRQ-irq-safe lock and the holding lock: [ 69.026404][ T12] -> (&xa->xa_lock#12){-...}-{3:3} { [ 69.028635][ T12] IN-HARDIRQ-W at: [ 69.030512][ T12] lock_acquire+0x120/0x360 [ 69.033676][ T12] _raw_spin_lock_irqsave+0xa7/0xf0 [ 69.036745][ T12] __folio_end_writeback+0x1da/0x950 [ 69.039551][ T12] folio_end_writeback_no_dropbehind+0x151/0x290 [ 69.042909][ T12] folio_end_writeback+0xea/0x220 [ 69.045747][ T12] end_bio_bh_io_sync+0xbd/0x120 [ 69.048679][ T12] blk_update_request+0x57e/0xe60 [ 69.051502][ T12] scsi_end_request+0x7c/0x830 [ 69.054251][ T12] scsi_io_completion+0x131/0x390 [ 69.057079][ T12] ata_qc_complete_multiple+0x1ae/0x280 [ 69.060077][ T12] ahci_handle_port_interrupt+0x3d5/0x610 [ 69.063697][ T12] ahci_handle_port_intr+0x19f/0x2e0 [ 69.067285][ T12] ahci_single_level_irq_intr+0x9b/0xe0 [ 69.070512][ T12] __handle_irq_event_percpu+0x295/0xab0 [ 69.073448][ T12] handle_irq_event+0x8b/0x1e0 [ 69.075913][ T12] handle_edge_irq+0x23b/0xa10 [ 69.078408][ T12] __common_interrupt+0x141/0x1f0 [ 69.080985][ T12] common_interrupt+0xb6/0xe0 [ 69.083482][ T12] asm_common_interrupt+0x26/0x40 [ 69.085997][ T12] _raw_spin_unlock_irqrestore+0xa8/0x110 [ 69.088858][ T12] ata_scsi_queuecmd+0x3f0/0x5c0 [ 69.091646][ T12] scsi_queue_rq+0x1c8e/0x2cc0 [ 69.094386][ T12] blk_mq_dispatch_rq_list+0x4bd/0x1900 [ 69.097376][ T12] __blk_mq_sched_dispatch_requests+0xda4/0x1570 [ 69.100735][ T12] blk_mq_sched_dispatch_requests+0xd7/0x190 [ 69.103879][ T12] blk_mq_run_work_fn+0x22e/0x300 [ 69.106708][ T12] process_scheduled_works+0xade/0x17b0 [ 69.109760][ T12] worker_thread+0x8a0/0xda0 [ 69.112321][ T12] kthread+0x70e/0x8a0 [ 69.114693][ T12] ret_from_fork+0x439/0x7d0 [ 69.117358][ T12] ret_from_fork_asm+0x1a/0x30 [ 69.120122][ T12] INITIAL USE at: [ 69.121828][ T12] lock_acquire+0x120/0x360 [ 69.124734][ T12] _raw_spin_lock_irq+0xa2/0xf0 [ 69.127401][ T12] shmem_add_to_page_cache+0x72d/0xba0 [ 69.130331][ T12] shmem_alloc_and_add_folio+0x846/0xf60 [ 69.133254][ T12] shmem_get_folio_gfp+0x59d/0x1660 [ 69.136115][ T12] shmem_read_folio_gfp+0x8a/0xe0 [ 69.138803][ T12] drm_gem_get_pages+0x223/0xa20 [ 69.141502][ T12] drm_gem_shmem_get_pages_locked+0x201/0x440 [ 69.144683][ T12] drm_gem_shmem_pin_locked+0x22c/0x460 [ 69.147637][ T12] drm_gem_shmem_vmap_locked+0x46b/0x790 [ 69.150765][ T12] drm_gem_vmap+0x107/0x1d0 [ 69.153198][ T12] drm_client_buffer_vmap+0x43/0x80 [ 69.156081][ T12] drm_fbdev_shmem_driver_fbdev_probe+0x258/0x900 [ 69.159408][ T12] __drm_fb_helper_initial_config_and_unlock+0x1239/0x18a0 [ 69.163039][ T12] drm_fbdev_client_hotplug+0x16c/0x230 [ 69.165977][ T12] drm_client_register+0x16f/0x210 [ 69.169213][ T12] drm_fbdev_client_setup+0x19f/0x3f0 [ 69.172102][ T12] drm_client_setup+0x107/0x220 [ 69.174781][ T12] vkms_init+0x3e0/0x4b0 [ 69.177330][ T12] do_one_initcall+0x233/0x820 [ 69.180052][ T12] do_initcall_level+0x104/0x190 [ 69.183470][ T12] do_initcalls+0x59/0xa0 [ 69.186116][ T12] kernel_init_freeable+0x334/0x4b0 [ 69.189051][ T12] kernel_init+0x1d/0x1d0 [ 69.191659][ T12] ret_from_fork+0x439/0x7d0 [ 69.194363][ T12] ret_from_fork_asm+0x1a/0x30 [ 69.197106][ T12] } [ 69.198259][ T12] ... key at: [] xa_init_flags.__key+0x0/0x20 [ 69.201882][ T12] [ 69.201882][ T12] the dependencies between the lock to be acquired [ 69.201889][ T12] and HARDIRQ-irq-unsafe lock: [ 69.207855][ T12] -> (&p->sequence){+.-.}-{0:0} { [ 69.210101][ T12] HARDIRQ-ON-W at: [ 69.211850][ T12] lock_acquire+0x120/0x360 [ 69.214617][ T12] fprop_new_period+0x1a3/0x3a0 [ 69.217404][ T12] writeout_period+0x8b/0x130 [ 69.220121][ T12] call_timer_fn+0x17b/0x5f0 [ 69.222849][ T12] __run_timer_base+0x61a/0x860 [ 69.225645][ T12] run_timer_softirq+0x103/0x180 [ 69.228495][ T12] handle_softirqs+0x283/0x870 [ 69.231348][ T12] __irq_exit_rcu+0xca/0x1f0 [ 69.234096][ T12] irq_exit_rcu+0x9/0x30 [ 69.236640][ T12] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 69.239832][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 69.243078][ T12] pv_native_safe_halt+0x13/0x20 [ 69.245909][ T12] default_idle+0x13/0x20 [ 69.248455][ T12] default_idle_call+0x73/0xb0 [ 69.251320][ T12] do_idle+0x1e7/0x510 [ 69.253770][ T12] cpu_startup_entry+0x44/0x60 [ 69.256500][ T12] rest_init+0x2de/0x300 [ 69.259063][ T12] start_kernel+0x3ae/0x410 [ 69.261742][ T12] x86_64_start_reservations+0x24/0x30 [ 69.264858][ T12] x86_64_start_kernel+0x143/0x1c0 [ 69.267736][ T12] common_startup_64+0x13e/0x147 [ 69.270547][ T12] IN-SOFTIRQ-W at: [ 69.272311][ T12] lock_acquire+0x120/0x360 [ 69.274948][ T12] fprop_new_period+0x1a3/0x3a0 [ 69.277797][ T12] writeout_period+0x8b/0x130 [ 69.280607][ T12] call_timer_fn+0x17b/0x5f0 [ 69.283376][ T12] __run_timer_base+0x61a/0x860 [ 69.286163][ T12] run_timer_softirq+0x103/0x180 [ 69.289010][ T12] handle_softirqs+0x283/0x870 [ 69.291723][ T12] __irq_exit_rcu+0xca/0x1f0 [ 69.294459][ T12] irq_exit_rcu+0x9/0x30 [ 69.297002][ T12] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 69.300159][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 69.303377][ T12] pv_native_safe_halt+0x13/0x20 [ 69.306207][ T12] default_idle+0x13/0x20 [ 69.308820][ T12] default_idle_call+0x73/0xb0 [ 69.311700][ T12] do_idle+0x1e7/0x510 [ 69.314204][ T12] cpu_startup_entry+0x44/0x60 [ 69.316992][ T12] rest_init+0x2de/0x300 [ 69.319537][ T12] start_kernel+0x3ae/0x410 [ 69.322197][ T12] x86_64_start_reservations+0x24/0x30 [ 69.325238][ T12] x86_64_start_kernel+0x143/0x1c0 [ 69.328110][ T12] common_startup_64+0x13e/0x147 [ 69.330989][ T12] INITIAL USE at: [ 69.332676][ T12] lock_acquire+0x120/0x360 [ 69.335254][ T12] fprop_new_period+0x1a3/0x3a0 [ 69.338047][ T12] writeout_period+0x8b/0x130 [ 69.340738][ T12] call_timer_fn+0x17b/0x5f0 [ 69.343294][ T12] __run_timer_base+0x61a/0x860 [ 69.345985][ T12] run_timer_softirq+0x103/0x180 [ 69.348637][ T12] handle_softirqs+0x283/0x870 [ 69.351143][ T12] __irq_exit_rcu+0xca/0x1f0 [ 69.353559][ T12] irq_exit_rcu+0x9/0x30 [ 69.355977][ T12] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 69.358879][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 69.361844][ T12] pv_native_safe_halt+0x13/0x20 [ 69.364834][ T12] default_idle+0x13/0x20 [ 69.367357][ T12] default_idle_call+0x73/0xb0 [ 69.370178][ T12] do_idle+0x1e7/0x510 [ 69.372564][ T12] cpu_startup_entry+0x44/0x60 [ 69.375312][ T12] rest_init+0x2de/0x300 [ 69.377866][ T12] start_kernel+0x3ae/0x410 [ 69.380410][ T12] x86_64_start_reservations+0x24/0x30 [ 69.383401][ T12] x86_64_start_kernel+0x143/0x1c0 [ 69.386463][ T12] common_startup_64+0x13e/0x147 [ 69.389354][ T12] INITIAL READ USE at: [ 69.391370][ T12] lock_acquire+0x120/0x360 [ 69.394237][ T12] fprop_fraction_percpu+0x170/0x400 [ 69.397354][ T12] __wb_calc_thresh+0x119/0x4a0 [ 69.400421][ T12] wb_over_bg_thresh+0x154/0x3d0 [ 69.403376][ T12] wb_workfn+0xb1c/0xef0 [ 69.406153][ T12] process_scheduled_works+0xade/0x17b0 [ 69.409271][ T12] worker_thread+0x8a0/0xda0 [ 69.412005][ T12] kthread+0x70e/0x8a0 [ 69.414656][ T12] ret_from_fork+0x439/0x7d0 [ 69.417501][ T12] ret_from_fork_asm+0x1a/0x30 [ 69.420342][ T12] } [ 69.421480][ T12] ... key at: [] fprop_global_init.__key.1+0x0/0x20 [ 69.425202][ T12] ... acquired at: [ 69.426890][ T12] lock_acquire+0x120/0x360 [ 69.429041][ T12] fprop_fraction_percpu+0x130/0x400 [ 69.431426][ T12] __fprop_add_percpu_max+0x10d/0x210 [ 69.433800][ T12] __wb_writeout_add+0xa5/0x290 [ 69.435913][ T12] __folio_end_writeback+0x4d5/0x950 [ 69.438203][ T12] folio_end_writeback_no_dropbehind+0x151/0x290 [ 69.440920][ T12] folio_end_writeback+0xea/0x220 [ 69.442995][ T12] fuse_flush_writepages+0x6c8/0x900 [ 69.445144][ T12] fuse_iomap_writeback_range+0x923/0x1800 [ 69.447486][ T12] iomap_writeback_folio+0xe72/0x1c80 [ 69.449728][ T12] iomap_writepages+0x162/0x2d0 [ 69.451735][ T12] fuse_writepages+0x2ad/0x380 [ 69.453706][ T12] do_writepages+0x32e/0x550 [ 69.455732][ T12] __writeback_single_inode+0x145/0xff0 [ 69.458714][ T12] writeback_sb_inodes+0x6c7/0x1010 [ 69.461172][ T12] __writeback_inodes_wb+0x111/0x240 [ 69.463859][ T12] wb_writeback+0x44f/0xaf0 [ 69.466213][ T12] wb_workfn+0xb63/0xef0 [ 69.468198][ T12] process_scheduled_works+0xade/0x17b0 [ 69.470641][ T12] worker_thread+0x8a0/0xda0 [ 69.472762][ T12] kthread+0x70e/0x8a0 [ 69.474626][ T12] ret_from_fork+0x439/0x7d0 [ 69.476654][ T12] ret_from_fork_asm+0x1a/0x30 [ 69.478768][ T12] [ 69.479805][ T12] [ 69.479805][ T12] stack backtrace: [ 69.482663][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted syzkaller #0 PREEMPT(full) [ 69.482675][ T12] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 69.482688][ T12] Workqueue: writeback wb_workfn (flush-0:42) [ 69.482710][ T12] Call Trace: [ 69.482716][ T12] [ 69.482722][ T12] dump_stack_lvl+0x189/0x250 [ 69.482736][ T12] ? __pfx_dump_stack_lvl+0x10/0x10 [ 69.482747][ T12] ? __pfx__printk+0x10/0x10 [ 69.482762][ T12] validate_chain+0x1f05/0x2140 [ 69.482780][ T12] __lock_acquire+0xab9/0xd20 [ 69.482791][ T12] ? __fprop_add_percpu_max+0x10d/0x210 [ 69.482805][ T12] lock_acquire+0x120/0x360 [ 69.482815][ T12] ? __fprop_add_percpu_max+0x10d/0x210 [ 69.482830][ T12] ? __fprop_add_percpu_max+0x10d/0x210 [ 69.482844][ T12] fprop_fraction_percpu+0x130/0x400 [ 69.482857][ T12] ? __fprop_add_percpu_max+0x10d/0x210 [ 69.482873][ T12] ? __pfx_fprop_fraction_percpu+0x10/0x10 [ 69.482887][ T12] ? xas_load+0x593/0x5b0 [ 69.482902][ T12] __fprop_add_percpu_max+0x10d/0x210 [ 69.482915][ T12] ? percpu_counter_add_batch+0xea/0x1e0 [ 69.482926][ T12] __wb_writeout_add+0xa5/0x290 [ 69.482943][ T12] __folio_end_writeback+0x4d5/0x950 [ 69.482955][ T12] ? __pfx___folio_end_writeback+0x10/0x10 [ 69.482965][ T12] ? fuse_simple_background+0xdc4/0x1040 [ 69.482977][ T12] ? kmem_cache_free+0x19b/0x690 [ 69.482991][ T12] folio_end_writeback_no_dropbehind+0x151/0x290 [ 69.483007][ T12] folio_end_writeback+0xea/0x220 [ 69.483020][ T12] fuse_flush_writepages+0x6c8/0x900 [ 69.483032][ T12] ? __pfx___folio_start_writeback+0x10/0x10 [ 69.483044][ T12] fuse_iomap_writeback_range+0x923/0x1800 [ 69.483060][ T12] iomap_writeback_folio+0xe72/0x1c80 [ 69.483075][ T12] ? rcu_is_watching+0x15/0xb0 [ 69.483091][ T12] iomap_writepages+0x162/0x2d0 [ 69.483104][ T12] ? __pfx_iomap_writepages+0x10/0x10 [ 69.483115][ T12] ? stack_trace_save+0x9c/0xe0 [ 69.483128][ T12] ? __pfx_stack_trace_save+0x10/0x10 [ 69.483142][ T12] fuse_writepages+0x2ad/0x380 [ 69.483156][ T12] ? __pfx_fuse_writepages+0x10/0x10 [ 69.483168][ T12] ? validate_chain+0x897/0x2140 [ 69.483184][ T12] ? __pfx_fuse_writepages+0x10/0x10 [ 69.483196][ T12] do_writepages+0x32e/0x550 [ 69.483207][ T12] ? reacquire_held_locks+0x127/0x1d0 [ 69.483218][ T12] ? writeback_sb_inodes+0x384/0x1010 [ 69.483232][ T12] __writeback_single_inode+0x145/0xff0 [ 69.483243][ T12] ? do_raw_spin_unlock+0x4d/0x240 [ 69.483258][ T12] writeback_sb_inodes+0x6c7/0x1010 [ 69.483274][ T12] ? __pfx_writeback_sb_inodes+0x10/0x10 [ 69.483303][ T12] ? __pfx_down_read_trylock+0x10/0x10 [ 69.483317][ T12] ? __pfx_move_expired_inodes+0x10/0x10 [ 69.483330][ T12] __writeback_inodes_wb+0x111/0x240 [ 69.483344][ T12] wb_writeback+0x44f/0xaf0 [ 69.483357][ T12] ? queue_io+0x381/0x590 [ 69.483366][ T12] ? __pfx_wb_writeback+0x10/0x10 [ 69.483379][ T12] wb_workfn+0xb63/0xef0 [ 69.483395][ T12] ? __pfx_wb_workfn+0x10/0x10 [ 69.483409][ T12] ? __lock_acquire+0xab9/0xd20 [ 69.483420][ T12] ? process_scheduled_works+0x9ef/0x17b0 [ 69.483433][ T12] ? _raw_spin_unlock_irq+0x23/0x50 [ 69.483447][ T12] ? process_scheduled_works+0x9ef/0x17b0 [ 69.483457][ T12] ? process_scheduled_works+0x9ef/0x17b0 [ 69.483467][ T12] process_scheduled_works+0xade/0x17b0 [ 69.483483][ T12] ? __pfx_process_scheduled_works+0x10/0x10 [ 69.483496][ T12] worker_thread+0x8a0/0xda0 [ 69.483512][ T12] kthread+0x70e/0x8a0 [ 69.483527][ T12] ? __pfx_worker_thread+0x10/0x10 [ 69.483537][ T12] ? __pfx_kthread+0x10/0x10 [ 69.483549][ T12] ? _raw_spin_unlock_irq+0x23/0x50 [ 69.483562][ T12] ? lockdep_hardirqs_on+0x9c/0x150 [ 69.483577][ T12] ? __pfx_kthread+0x10/0x10 [ 69.483590][ T12] ret_from_fork+0x439/0x7d0 [ 69.483602][ T12] ? __pfx_ret_from_fork+0x10/0x10 [ 69.483613][ T12] ? __pfx_kthread+0x10/0x10 [ 69.483626][ T12] ret_from_fork_asm+0x1a/0x30 [ 69.483643][ T12]