program: openat$kvm(0xffffffffffffff9c, &(0x7f0000000500), 0x0, 0x0) socket$rds(0x15, 0x5, 0x0) mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup/syz0\x00', 0x1ff) r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) r1 = openat$cgroup_type(r0, &(0x7f0000000100), 0x2, 0x0) write$cgroup_type(r1, &(0x7f0000000280), 0x9) r2 = openat$cgroup_procs(r0, &(0x7f00000002c0)='cgroup.threads\x00', 0x2, 0x0) write$cgroup_pid(r2, &(0x7f0000000c40), 0x12) r3 = fsopen(&(0x7f0000000080)='cgroup2\x00', 0x0) fsconfig$FSCONFIG_CMD_CREATE(r3, 0x6, 0x0, 0x0, 0x0) r4 = fsmount(r3, 0x0, 0x8) sendmsg$NFT_BATCH(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a"], 0xd4}}, 0x4001) r5 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) r6 = ioctl$KVM_CREATE_VM(r5, 0xae01, 0x0) r7 = ioctl$KVM_CREATE_VCPU(r6, 0xae41, 0x0) ioctl(r7, 0x4048aecb, &(0x7f0000000100)="070000000000000001000000ffffffff") openat$cgroup(r4, &(0x7f00000000c0)='syz0\x00', 0x200002, 0x0) read$FUSE(0xffffffffffffffff, &(0x7f0000003d40)={0x2020}, 0x2020) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socket$nl_route(0x10, 0x3, 0x0) socket$netlink(0x10, 0x3, 0x0) r8 = socket$alg(0x26, 0x5, 0x0) pipe2$watch_queue(&(0x7f0000000100), 0x80) bind$alg(r8, &(0x7f0000000000)={0x26, 'skcipher\x00', 0x0, 0x0, 'ecb-camellia-asm\x00'}, 0x58) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000001c40)={0x8, 0x3, &(0x7f0000001300)=ANY=[@ANYBLOB="1800000000000000000000000000000095"], &(0x7f0000001200)='syzkaller\x00'}, 0x80) fsopen(&(0x7f0000000000)='cgroup2\x00', 0x0) syz_mount_image$btrfs(&(0x7f0000000100), &(0x7f0000000000)='./bus\x00', 0x810, &(0x7f0000000180)={[{@discard}, {@compress_algo={'compress', 0x3d, 'zstd'}}, {@discard_async}, {@usebackuproot}, {@skip_balance}, {@autodefrag}, {@commit={'commit', 0x3d, 0x9}}, {@acl}]}, 0xff, 0x5122, 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qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqsAMHAgAAAABA/q+NUFVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV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r9 = accept4(r8, 0x0, 0x0, 0x800) sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000300)=ANY=[@ANYBLOB="1c0000001500010300000000000000000a000000f6a71aa1e933080002001c6e8586bda9d46a009cd78dd7913373302257f781e8b63cc521889595b81b0675a4074a8a0e59eb8300e248931d9de99c654f02fcd9e0f668b3162cf686944359a96e18d7dd32cd3fc3f34fa9217f7a03d8dafe9590680a3e15273709b966096c17442cd442ba120421033d1e78", @ANYRES32=r9, @ANYBLOB], 0x1c}}, 0x20000080) [ 87.224890][ T4637] Bluetooth: hci0: command tx timeout [ 87.261433][ T1362] cfg80211: failed to load regulatory.db [ 87.598299][ C0] [ 87.599466][ C0] ============================= [ 87.601806][ C0] [ BUG: Invalid wait context ] [ 87.604135][ C0] syzkaller #0 Not tainted [ 87.606192][ C0] ----------------------------- [ 87.608389][ C0] syz.0.0/5314 is trying to lock: [ 87.610605][ C0] ffff888051ee1bb0 (&gpc->lock){....}-{3:3}, at: kvm_xen_set_evtchn_fast+0x1f4/0x9a0 [ 87.614919][ C0] other info that might help us debug this: [ 87.617878][ C0] context-{2:2} [ 87.619563][ C0] 3 locks held by syz.0.0/5314: [ 87.621990][ C0] #0: ffff88801c2da450 (sb_writers#5){.+.+}-{0:0}, at: vfs_write+0x22b/0xba0 [ 87.625873][ C0] #1: ffff888012bbf8d0 (&sb->s_type->i_mutex_key#15){+.+.}-{4:4}, at: shmem_file_write_iter+0x7f/0x120 [ 87.630602][ C0] #2: ffff888051ee2110 (&kvm->srcu){.?.+}-{0:0}, at: kvm_xen_set_evtchn_fast+0x1bc/0x9a0 [ 87.635388][ C0] stack backtrace: [ 87.637394][ C0] CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.637416][ C0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 87.637424][ C0] Call Trace: [ 87.637432][ C0] [ 87.637439][ C0] dump_stack_lvl+0xe8/0x150 [ 87.637461][ C0] __lock_acquire+0xe39/0x2cf0 [ 87.637481][ C0] ? __lock_acquire+0x683/0x2cf0 [ 87.637498][ C0] ? kvm_xen_set_evtchn_fast+0x1f4/0x9a0 [ 87.637513][ C0] lock_acquire+0x106/0x350 [ 87.637528][ C0] ? kvm_xen_set_evtchn_fast+0x1f4/0x9a0 [ 87.637542][ C0] ? xa_load+0x1db/0x210 [ 87.637618][ C0] _raw_read_lock_irqsave+0x48/0x60 [ 87.637633][ C0] ? kvm_xen_set_evtchn_fast+0x1f4/0x9a0 [ 87.637646][ C0] kvm_xen_set_evtchn_fast+0x1f4/0x9a0 [ 87.637661][ C0] ? kvm_xen_set_evtchn_fast+0x1bc/0x9a0 [ 87.637676][ C0] xen_timer_callback+0x109/0x220 [ 87.637691][ C0] ? __pfx_xen_timer_callback+0x10/0x10 [ 87.637704][ C0] __hrtimer_run_queues+0x371/0xa10 [ 87.637722][ C0] hrtimer_interrupt+0x448/0x910 [ 87.637741][ C0] __sysvec_apic_timer_interrupt+0x102/0x430 [ 87.637754][ C0] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 87.637770][ C0] [ 87.637775][ C0] [ 87.637780][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 87.637794][ C0] RIP: 0010:get_page_from_freelist+0x44a/0x2270 [ 87.637811][ C0] Code: 84 24 88 01 00 00 42 80 3c 20 00 74 08 48 89 df e8 fb 26 0e 00 48 f7 03 04 00 00 00 48 89 9c 24 80 00 00 00 0f 85 b2 00 00 00 <48> 8b 44 24 08 48 8d 78 10 48 89 f8 48 c1 e8 03 42 80 3c 20 00 4c [ 87.637822][ C0] RSP: 0018:ffffc9000deef528 EFLAGS: 00000246 [ 87.637834][ C0] RAX: 1ffff1100bffade7 RBX: ffff88805ffd6f38 RCX: ffffffff82282047 [ 87.637842][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88805ffd6f38 [ 87.637849][ C0] RBP: ffff88802fffd968 R08: ffff88805ffd6f3f R09: 1ffff1100bffade7 [ 87.637856][ C0] R10: dffffc0000000000 R11: ffffed100bffade8 R12: dffffc0000000000 [ 87.637864][ C0] R13: 0000000000000881 R14: ffff88802fffd960 R15: 0000000000000000 [ 87.637873][ C0] ? get_page_from_freelist+0x417/0x2270 [ 87.637887][ C0] ? get_page_from_freelist+0x417/0x2270 [ 87.637905][ C0] ? prepare_alloc_pages+0x230/0x650 [ 87.637918][ C0] __alloc_frozen_pages_noprof+0x18d/0x380 [ 87.637931][ C0] ? __pfx___alloc_frozen_pages_noprof+0x10/0x10 [ 87.637944][ C0] ? __pfx_policy_nodemask+0x10/0x10 [ 87.637990][ C0] alloc_pages_mpol+0x212/0x380 [ 87.638005][ C0] folio_alloc_mpol_noprof+0x39/0x160 [ 87.638019][ C0] shmem_alloc_and_add_folio+0x43e/0xf60 [ 87.638036][ C0] ? filemap_get_entry+0xcd/0x3f0 [ 87.638053][ C0] ? __pfx_filemap_get_entry+0x10/0x10 [ 87.638065][ C0] ? shmem_allowable_huge_orders+0x673/0x6c0 [ 87.638079][ C0] ? __pfx_shmem_alloc_and_add_folio+0x10/0x10 [ 87.638095][ C0] ? shmem_allowable_huge_orders+0x325/0x6c0 [ 87.638110][ C0] shmem_get_folio_gfp+0x5da/0x16d0 [ 87.638127][ C0] shmem_write_begin+0x16c/0x330 [ 87.638142][ C0] generic_perform_write+0x2d5/0x8f0 [ 87.638156][ C0] ? __pfx_generic_perform_write+0x10/0x10 [ 87.638166][ C0] ? preempt_count_add+0x91/0x190 [ 87.638180][ C0] ? mnt_put_write_access_file+0xb9/0x100 [ 87.638196][ C0] ? file_update_time_flags+0x400/0x4a0 [ 87.638213][ C0] shmem_file_write_iter+0xf8/0x120 [ 87.638229][ C0] vfs_write+0x612/0xba0 [ 87.638246][ C0] ? __pfx_vfs_write+0x10/0x10 [ 87.638260][ C0] ? __fget_files+0x2a/0x420 [ 87.638273][ C0] ksys_write+0x150/0x270 [ 87.638287][ C0] ? __pfx_ksys_write+0x10/0x10 [ 87.638302][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.638313][ C0] do_syscall_64+0x174/0x580 [ 87.638334][ C0] ? trace_irq_disable+0x3b/0x140 [ 87.638347][ C0] ? clear_bhb_loop+0x70/0xc0 [ 87.638358][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.638369][ C0] RIP: 0033:0x7fc19715e90e [ 87.638380][ C0] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 87.638388][ C0] RSP: 002b:00007fc197faad68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 87.638399][ C0] RAX: ffffffffffffffda RBX: 00007fc197fab6c0 RCX: 00007fc19715e90e [ 87.638406][ C0] RDX: 0000000001000000 RSI: 00007fc18b000000 RDI: 0000000000000016 [ 87.638413][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 87.638419][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 [ 87.638425][ C0] R13: 00007fc197faaea0 R14: 00007fc197faae60 R15: 00007fc18b000000 [ 87.638436][ C0] [ 88.076748][ T5314] loop0: detected capacity change from 0 to 32768 [ 88.088682][ T5314] btrfs: Deprecated parameter 'usebackuproot' [ 88.104134][ T5314] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 88.122444][ T5314] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5314) [ 88.153635][ T5314] BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf [ 88.169357][ T5314] BTRFS info (device loop0): using crc32c checksum algorithm [ 88.308480][ T180] BTRFS warning (device loop0): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0 [ 88.314978][ T5314] BTRFS error (device loop0): failed to load root extent [ 88.322417][ T5314] BTRFS warning (device loop0): try to load backup roots slot 1 [ 88.333557][ T13] BTRFS warning (device loop0): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0 [ 88.340918][ T5314] BTRFS warning (device loop0): couldn't read tree root [ 88.357371][ T5314] BTRFS warning (device loop0): try to load backup roots slot 2 [ 88.361341][ T12] BTRFS error (device loop0): level verify failed on logical 5255168 mirror 1 wanted 0 found 1 [ 88.367839][ T5314] BTRFS warning (device loop0): couldn't read tree root [ 88.374302][ T5314] BTRFS warning (device loop0): try to load backup roots slot 3 [ 88.388051][ T5314] BTRFS info (device loop0): rebuilding free space tree [ 88.405514][ T5314] BTRFS info (device loop0): checking UUID tree [ 88.417520][ T5314] BTRFS info (device loop0): enabling ssd optimizations [ 88.427752][ T5314] BTRFS info (device loop0): turning on async discard [ 88.438112][ T5314] BTRFS info (device loop0): enabling free space tree [ 88.453237][ T5314] BTRFS info (device loop0): force clearing of disk cache [ 88.463514][ T5314] BTRFS info (device loop0): enabling auto defrag [ 88.466727][ T5314] BTRFS info (device loop0): trying to use backup root at mount time [ 88.473925][ T5314] BTRFS info (device loop0): use zstd compression, level 3