Warning: Permanently added '10.128.0.244' (ED25519) to the list of known hosts. executing program [ 35.733958][ T6007] syz-executor254[6007]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set executing program executing program executing program executing program executing program [ 35.872737][ T6016] loop4: detected capacity change from 0 to 8192 [ 35.878413][ T6016] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 35.881638][ T6016] REISERFS (device loop4): found reiserfs format "3.5" with non-standard journal [ 35.884364][ T6016] REISERFS (device loop4): using ordered data mode [ 35.886139][ T6016] reiserfs: using flush barriers [ 35.888331][ T6016] REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 35.893001][ T6016] REISERFS (device loop4): checking transaction log (loop4) [ 35.897085][ T6016] REISERFS (device loop4): Using r5 hash to sort names executing program [ 35.986402][ T6015] loop3: detected capacity change from 0 to 8192 [ 35.995480][ T6007] loop2: detected capacity change from 0 to 8192 [ 35.996527][ T6014] loop5: detected capacity change from 0 to 8192 executing program [ 36.011836][ T6015] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 36.015599][ T6015] REISERFS (device loop3): found reiserfs format "3.5" with non-standard journal [ 36.017888][ T6015] REISERFS (device loop3): using ordered data mode [ 36.019561][ T6015] reiserfs: using flush barriers [ 36.021134][ T6014] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 36.024640][ T6014] REISERFS (device loop5): found reiserfs format "3.5" with non-standard journal [ 36.027094][ T6014] REISERFS (device loop5): using ordered data mode [ 36.028849][ T6014] reiserfs: using flush barriers [ 36.031507][ T6014] REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 36.033023][ T6007] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 36.035599][ T6015] REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 36.042374][ T6015] REISERFS (device loop3): checking transaction log (loop3) [ 36.042383][ T6009] loop1: detected capacity change from 0 to 8192 [ 36.045996][ T6008] loop0: detected capacity change from 0 to 8192 [ 36.046755][ T6007] REISERFS (device loop2): found reiserfs format "3.5" with non-standard journal [ 36.050765][ T6015] REISERFS (device loop3): Using r5 hash to sort names [ 36.051566][ T6014] REISERFS (device loop5): checking transaction log (loop5) [ 36.055359][ T6008] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 36.057051][ T6007] REISERFS (device loop2): using ordered data mode [ 36.063141][ T6008] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal executing program [ 36.069117][ T6008] REISERFS (device loop0): using ordered data mode [ 36.070495][ T6025] [ 36.071411][ T6025] ====================================================== [ 36.071927][ T6008] reiserfs: using flush barriers [ 36.073188][ T6025] WARNING: possible circular locking dependency detected [ 36.073196][ T6025] 6.6.0-rc4-syzkaller-g19af4a4ed414 #0 Not tainted [ 36.073204][ T6025] ------------------------------------------------------ [ 36.073208][ T6025] syz-executor254/6025 is trying to acquire lock: [ 36.073215][ T6025] ffff0000db54a0e0 (&type->s_umount_key#25){++++}-{3:3}, at: super_lock+0x160/0x328 [ 36.073255][ T6025] [ 36.073255][ T6025] but task is already holding lock: [ 36.073258][ T6025] ffff0000c1540c88 (&bdev->bd_holder_lock){+.+.}-{3:3}, at: blkdev_common_ioctl+0x7fc/0x2884 [ 36.079276][ T6007] reiserfs: using flush barriers [ 36.079420][ T6025] [ 36.079420][ T6025] which lock already depends on the new lock. [ 36.079420][ T6025] [ 36.079428][ T6025] [ 36.079428][ T6025] the existing dependency chain (in reverse order) is: [ 36.094130][ T6025] [ 36.094130][ T6025] -> #3 (&bdev->bd_holder_lock){+.+.}-{3:3}: [ 36.096139][ T6025] __mutex_lock_common+0x190/0x21a0 [ 36.097656][ T6025] mutex_lock_nested+0x2c/0x38 [ 36.098925][ T6025] bd_finish_claiming+0x218/0x3dc [ 36.099205][ T6008] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 36.100272][ T6025] blkdev_get_by_dev+0x3f4/0x55c [ 36.104474][ T6007] REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 36.105449][ T6025] setup_bdev_super+0x68/0x51c [ 36.109592][ T6008] REISERFS (device loop0): checking transaction log (loop0) [ 36.110617][ T6025] mount_bdev+0x1a0/0x2b4 [ 36.110636][ T6025] get_super_block+0x44/0x58 [ 36.112440][ T6007] REISERFS (device loop2): checking transaction log (loop2) [ 36.113413][ T6025] legacy_get_tree+0xd4/0x16c [ 36.113430][ T6025] vfs_get_tree+0x90/0x288 [ 36.113441][ T6025] do_new_mount+0x25c/0x8c8 [ 36.113451][ T6025] path_mount+0x590/0xe04 [ 36.113460][ T6025] init_mount+0xe4/0x144 [ 36.113471][ T6025] do_mount_root+0x104/0x3e4 [ 36.113483][ T6025] mount_root_generic+0x1f0/0x594 [ 36.122003][ T6014] REISERFS (device loop5): Using r5 hash to sort names [ 36.122790][ T6025] mount_block_root+0x6c/0x7c [ 36.122813][ T6025] mount_root+0xb4/0xe4 [ 36.122824][ T6025] prepare_namespace+0xdc/0x11c [ 36.122836][ T6025] kernel_init_freeable+0x35c/0x474 [ 36.122848][ T6025] kernel_init+0x24/0x29c [ 36.122859][ T6025] ret_from_fork+0x10/0x20 [ 36.122883][ T6025] [ 36.122883][ T6025] -> #2 (bdev_lock [ 36.128127][ T6008] REISERFS (device loop0): Using r5 hash to sort names [ 36.128553][ T6025] ){+.+.}-{3:3}: [ 36.139104][ T6025] __mutex_lock_common+0x190/0x21a0 [ 36.140539][ T6007] REISERFS (device loop2): Using r5 hash to sort names [ 36.140563][ T6025] mutex_lock_nested+0x2c/0x38 [ 36.143692][ T6025] bd_finish_claiming+0x84/0x3dc [ 36.145107][ T6025] blkdev_get_by_dev+0x3f4/0x55c [ 36.146512][ T6025] setup_bdev_super+0x68/0x51c [ 36.147895][ T6025] mount_bdev+0x1a0/0x2b4 [ 36.149211][ T6025] get_super_block+0x44/0x58 [ 36.150572][ T6025] legacy_get_tree+0xd4/0x16c executing program [ 36.151822][ T6025] vfs_get_tree+0x90/0x288 [ 36.153184][ T6025] do_new_mount+0x25c/0x8c8 [ 36.154432][ T6025] path_mount+0x590/0xe04 [ 36.155691][ T6009] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 36.155696][ T6025] init_mount+0xe4/0x144 [ 36.155712][ T6025] do_mount_root+0x104/0x3e4 [ 36.161318][ T6025] mount_root_generic+0x1f0/0x594 [ 36.162742][ T6025] mount_block_root+0x6c/0x7c [ 36.164048][ T6025] mount_root+0xb4/0xe4 [ 36.165270][ T6025] prepare_namespace+0xdc/0x11c [ 36.166693][ T6025] kernel_init_freeable+0x35c/0x474 [ 36.168158][ T6025] kernel_init+0x24/0x29c [ 36.169436][ T6025] ret_from_fork+0x10/0x20 [ 36.170737][ T6025] [ 36.170737][ T6025] -> #1 (&disk->open_mutex){+.+.}-{3:3}: [ 36.172764][ T6025] __mutex_lock_common+0x190/0x21a0 [ 36.173976][ T6009] REISERFS (device loop1): found reiserfs format "3.5" with non-standard journal [ 36.174153][ T6025] mutex_lock_nested+0x2c/0x38 [ 36.177848][ T6025] blkdev_get_by_dev+0x114/0x55c [ 36.179282][ T6025] journal_init+0xa60/0x1e44 [ 36.180587][ T6025] reiserfs_fill_super+0xd50/0x2028 [ 36.182041][ T6025] mount_bdev+0x1e8/0x2b4 [ 36.183312][ T6025] get_super_block+0x44/0x58 [ 36.184592][ T6025] legacy_get_tree+0xd4/0x16c [ 36.185953][ T6025] vfs_get_tree+0x90/0x288 [ 36.187199][ T6025] do_new_mount+0x25c/0x8c8 [ 36.188497][ T6025] path_mount+0x590/0xe04 [ 36.188834][ T6009] REISERFS (device loop1): using ordered data mode [ 36.189735][ T6025] __arm64_sys_mount+0x45c/0x594 [ 36.192760][ T6025] invoke_syscall+0x98/0x2b8 [ 36.194144][ T6025] el0_svc_common+0x130/0x23c [ 36.194810][ T6009] reiserfs: using flush barriers [ 36.195535][ T6025] do_el0_svc+0x48/0x58 [ 36.197972][ T6025] el0_svc+0x58/0x16c [ 36.199213][ T6025] el0t_64_sync_handler+0x84/0xfc [ 36.200659][ T6025] el0t_64_sync+0x190/0x194 [ 36.201906][ T6025] [ 36.201906][ T6025] -> #0 (&type->s_umount_key#25){++++}-{3:3}: [ 36.203668][ T6009] REISERFS (device loop1): journal params: device loop1, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 36.204008][ T6025] __lock_acquire+0x3370/0x75e8 [ 36.209186][ T6025] lock_acquire+0x23c/0x71c [ 36.210491][ T6025] down_read+0x58/0x2fc [ 36.211729][ T6025] super_lock+0x160/0x328 [ 36.212935][ T6025] fs_bdev_sync+0xa4/0x168 [ 36.214205][ T6025] blkdev_common_ioctl+0x848/0x2884 [ 36.215759][ T6025] blkdev_ioctl+0x35c/0xae4 [ 36.217021][ T6025] __arm64_sys_ioctl+0x14c/0x1c8 [ 36.218390][ T6025] invoke_syscall+0x98/0x2b8 [ 36.219625][ T6025] el0_svc_common+0x130/0x23c [ 36.220992][ T6025] do_el0_svc+0x48/0x58 [ 36.222152][ T6025] el0_svc+0x58/0x16c [ 36.222708][ T6009] REISERFS (device loop1): checking transaction log (loop1) [ 36.223289][ T6025] el0t_64_sync_handler+0x84/0xfc [ 36.226498][ T6025] el0t_64_sync+0x190/0x194 [ 36.227801][ T6025] [ 36.227801][ T6025] other info that might help us debug this: [ 36.227801][ T6025] [ 36.230265][ T6009] REISERFS (device loop1): Using r5 hash to sort names [ 36.230447][ T6025] Chain exists of: [ 36.230447][ T6025] &type->s_umount_key#25 --> bdev_lock --> &bdev->bd_holder_lock [ 36.230447][ T6025] [ 36.235736][ T6025] Possible unsafe locking scenario: [ 36.235736][ T6025] [ 36.237663][ T6025] CPU0 CPU1 [ 36.239101][ T6025] ---- ---- [ 36.240394][ T6025] lock(&bdev->bd_holder_lock); [ 36.241636][ T6025] lock(bdev_lock); [ 36.243262][ T6025] lock(&bdev->bd_holder_lock); [ 36.245236][ T6025] rlock(&type->s_umount_key#25); [ 36.246598][ T6025] [ 36.246598][ T6025] *** DEADLOCK *** [ 36.246598][ T6025] [ 36.248715][ T6025] 1 lock held by syz-executor254/6025: [ 36.250120][ T6025] #0: ffff0000c1540c88 (&bdev->bd_holder_lock){+.+.}-{3:3}, at: blkdev_common_ioctl+0x7fc/0x2884 [ 36.252928][ T6025] [ 36.252928][ T6025] stack backtrace: [ 36.254399][ T6025] CPU: 0 PID: 6025 Comm: syz-executor254 Not tainted 6.6.0-rc4-syzkaller-g19af4a4ed414 #0 [ 36.257044][ T6025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 36.259542][ T6025] Call trace: [ 36.260381][ T6025] dump_backtrace+0x1b8/0x1e4 [ 36.261609][ T6025] show_stack+0x2c/0x44 [ 36.262662][ T6025] dump_stack_lvl+0xd0/0x124 [ 36.263891][ T6025] dump_stack+0x1c/0x28 [ 36.264949][ T6025] print_circular_bug+0x150/0x1b8 [ 36.266219][ T6025] check_noncircular+0x310/0x404 [ 36.267474][ T6025] __lock_acquire+0x3370/0x75e8 [ 36.268768][ T6025] lock_acquire+0x23c/0x71c [ 36.269926][ T6025] down_read+0x58/0x2fc [ 36.270953][ T6025] super_lock+0x160/0x328 [ 36.272046][ T6025] fs_bdev_sync+0xa4/0x168 [ 36.273188][ T6025] blkdev_common_ioctl+0x848/0x2884 [ 36.274444][ T6025] blkdev_ioctl+0x35c/0xae4 [ 36.275593][ T6025] __arm64_sys_ioctl+0x14c/0x1c8 [ 36.276835][ T6025] invoke_syscall+0x98/0x2b8 [ 36.278022][ T6025] el0_svc_common+0x130/0x23c [ 36.279206][ T6025] do_el0_svc+0x48/0x58 [ 36.280253][ T6025] el0_svc+0x58/0x16c [ 36.281310][ T6025] el0t_64_sync_handler+0x84/0xfc [ 36.282614][ T6025] el0t_64_sync+0x190/0x194 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing 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