INFO: task syz-executor.1:21077 blocked for more than 430 seconds. Not tainted 6.8.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:21077 tgid:21076 ppid:11362 flags:0x00000005 Backtrace: [<81884e90>] (__schedule) from [<81885acc>] (__schedule_loop kernel/sched/core.c:6813 [inline]) [<81884e90>] (__schedule) from [<81885acc>] (schedule+0x2c/0xfc kernel/sched/core.c:6828) r10:8395172c r9:00000000 r8:83951730 r7:00000002 r6:ed851e2c r5:84565400 r4:84565400 [<81885aa0>] (schedule) from [<818860dc>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6885) r5:84565400 r4:8395172c [<818860c4>] (schedule_preempt_disabled) from [<818889bc>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<818860c4>] (schedule_preempt_disabled) from [<818889bc>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<818886d4>] (__mutex_lock.constprop.0) from [<81889288>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:8395172c r9:84565400 r8:00000000 r7:83089100 r6:83951600 r5:8506dcc0 r4:83089368 [<81889274>] (__mutex_lock_slowpath) from [<818892c8>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8188928c>] (mutex_lock) from [<8076a3e8>] (bdev_release+0x58/0x2e0 block/bdev.c:1028) [<8076a390>] (bdev_release) from [<8076aabc>] (blkdev_release+0x14/0x1c block/fops.c:628) r10:00000036 r9:84565400 r8:851c1e50 r7:83793ac0 r6:83116c60 r5:484a001d r4:8506dcc0 [<8076aaa8>] (blkdev_release) from [<804f6494>] (__fput+0x84/0x2d4 fs/file_table.c:422) [<804f6410>] (__fput) from [<804f6760>] (____fput+0x10/0x14 fs/file_table.c:450) r9:84565400 r8:8285862c r7:84565400 r6:84565c7c r5:84565c4c r4:00000000 [<804f6750>] (____fput) from [<8026c38c>] (task_work_run+0x90/0xb8 kernel/task_work.c:180) [<8026c2fc>] (task_work_run) from [<8020befc>] (resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]) [<8026c2fc>] (task_work_run) from [<8020befc>] (do_work_pending+0x40c/0x4c0 arch/arm/kernel/signal.c:631) r9:84565400 r8:80200288 r7:00000036 r6:80200288 r5:ed851fb0 r4:84565400 [<8020baf0>] (do_work_pending) from [<80200088>] (slow_work_pending+0xc/0x24) Exception stack(0xed851fb0 to 0xed851ff8) 1fa0: 00000000 0000ab03 00000000 00000000 1fc0: 00000000 00000000 0014c2c4 00000036 7ef4532e 7ef4532f 003d0f00 76bc90fc 1fe0: 76bc8f08 76bc8ef8 000167f8 00050bc0 60000010 00000003 r9:84565400 r8:80200288 r7:00000036 r6:0014c2c4 r5:00000000 r4:00000000 INFO: task syz-executor.1:21085 blocked for more than 430 seconds. Not tainted 6.8.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:21085 tgid:21076 ppid:11362 flags:0x00000005 Backtrace: [<81884e90>] (__schedule) from [<81885acc>] (__schedule_loop kernel/sched/core.c:6813 [inline]) [<81884e90>] (__schedule) from [<81885acc>] (schedule+0x2c/0xfc kernel/sched/core.c:6828) r10:ed9c1b74 r9:82605484 r8:82604ec0 r7:00000000 r6:00000002 r5:00000000 r4:84564800 [<81885aa0>] (schedule) from [<81885bf8>] (io_schedule+0x38/0x48 kernel/sched/core.c:9034) r5:00000000 r4:84564800 [<81885bc0>] (io_schedule) from [<80429480>] (folio_wait_bit_common+0x190/0x3a8 mm/filemap.c:1283) r5:84564800 r4:00000002 [<804292f0>] (folio_wait_bit_common) from [<8042ca3c>] (folio_put_wait_locked mm/filemap.c:1447 [inline]) [<804292f0>] (folio_wait_bit_common) from [<8042ca3c>] (do_read_cache_folio+0x98/0x248 mm/filemap.c:3729) r10:851b8a00 r9:00080001 r8:00000000 r7:8076aa1c r6:00000000 r5:83089478 r4:ddeb5c34 [<8042c9a4>] (do_read_cache_folio) from [<8042cc08>] (read_cache_folio+0x1c/0x24 mm/filemap.c:3779) r10:851b8a00 r9:00000002 r8:00000000 r7:00000000 r6:807921bc r5:851b8a00 r4:00000000 r3:00000000 [<8042cbec>] (read_cache_folio) from [<80791fac>] (read_mapping_folio include/linux/pagemap.h:894 [inline]) [<8042cbec>] (read_cache_folio) from [<80791fac>] (read_part_sector+0x58/0xd0 block/partitions/core.c:715) [<80791f54>] (read_part_sector) from [<80792224>] (msdos_partition+0x68/0xafc block/partitions/msdos.c:592) r5:851b8a00 r4:83951600 [<807921bc>] (msdos_partition) from [<807918fc>] (check_partition block/partitions/core.c:138 [inline]) [<807921bc>] (msdos_partition) from [<807918fc>] (blk_add_partitions block/partitions/core.c:582 [inline]) [<807921bc>] (msdos_partition) from [<807918fc>] (bdev_disk_changed+0x2d0/0x6b8 block/partitions/core.c:686) r10:00000001 r9:81aeb23c r8:00000000 r7:83951630 r6:807921bc r5:851b8a00 r4:83951600 [<8079162c>] (bdev_disk_changed) from [<8076942c>] (blkdev_get_whole+0xa4/0xb4 block/bdev.c:667) r10:8395172c r9:00000000 r8:8506d670 r7:83951600 r6:83951600 r5:00000000 r4:83089100 [<80769388>] (blkdev_get_whole) from [<80769fe4>] (bdev_open+0x230/0x3d0 block/bdev.c:874) r7:83951600 r6:00000003 r5:00000000 r4:83089100 [<80769db4>] (bdev_open) from [<8076bfa8>] (blkdev_open+0x78/0x9c block/fops.c:620) r10:8506d600 r9:00000006 r8:8506d670 r7:83089100 r6:00000003 r5:8506d600 r4:00000000 [<8076bf30>] (blkdev_open) from [<804ef404>] (do_dentry_open+0x1e4/0x57c fs/open.c:955) r7:8076bf30 r6:00000000 r5:83793ac0 r4:8506d600 [<804ef220>] (do_dentry_open) from [<804f13d8>] (vfs_open+0x34/0x38 fs/open.c:1089) r8:ed9c1e58 r7:ed9c1f20 r6:00000000 r5:8271c190 r4:00171042 [<804f13a4>] (vfs_open) from [<80508df4>] (do_open fs/namei.c:3642 [inline]) [<804f13a4>] (vfs_open) from [<80508df4>] (path_openat+0xa88/0x10e4 fs/namei.c:3799) [<8050836c>] (path_openat) from [<80509c30>] (do_filp_open+0x9c/0x138 fs/namei.c:3826) r10:00000142 r9:82ee6000 r8:00000001 r7:ed9c1e58 r6:ed9c1f20 r5:84564800 r4:ffffff9c [<80509b94>] (do_filp_open) from [<804f16c4>] (do_sys_openat2+0xbc/0xe4 fs/open.c:1406) r9:84564800 r8:80200288 r7:ffffff9c r6:00000006 r5:82ee6000 r4:ed9c1f58 [<804f1608>] (do_sys_openat2) from [<804f1acc>] (do_sys_open fs/open.c:1421 [inline]) [<804f1608>] (do_sys_openat2) from [<804f1acc>] (__do_sys_openat fs/open.c:1437 [inline]) [<804f1608>] (do_sys_openat2) from [<804f1acc>] (sys_openat+0x98/0xd4 fs/open.c:1432) r7:00000142 r6:00000000 r5:76ba7af8 r4:ffffff9c [<804f1a34>] (sys_openat) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xed9c1fa8 to 0xed9c1ff0) 1fa0: 00171042 76ba7af8 ffffff9c 76ba7af8 00171042 00000000 1fc0: 00171042 76ba7af8 00000000 00000142 00000000 7ef4532f 003d0f00 76ba80fc 1fe0: 81010103 76ba7ab0 00091154 0004eea8 r5:76ba7af8 r4:00171042 NMI backtrace for cpu 1 CPU: 1 PID: 31 Comm: khungtaskd Not tainted 6.8.0-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<81863744>] (dump_backtrace) from [<81863840>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:00000013 r5:60000093 r4:81fc108c [<81863828>] (show_stack) from [<81880fc4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81863828>] (show_stack) from [<81880fc4>] (dump_stack_lvl+0x70/0x7c lib/dump_stack.c:114) [<81880f54>] (dump_stack_lvl) from [<81880fe8>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000001 r4:00000001 [<81880fd0>] (dump_stack) from [<81850b1c>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<818509bc>] (nmi_cpu_backtrace) from [<81850c68>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8260c590 r5:8261a88c r4:ffffffff [<81850b38>] (nmi_trigger_cpumask_backtrace) from [<80210574>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:8260c6f4 r8:000456c0 r7:8289cfe0 r6:00007efc r5:860a3204 r4:835a2924 [<8021055c>] (arch_trigger_cpumask_backtrace) from [<8034df68>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<8034df68>] (check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<8034df68>] (watchdog+0x480/0x594 kernel/hung_task.c:380) [<8034dae8>] (watchdog) from [<8026fd30>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819e58 r8:82f20d00 r7:00000000 r6:8034dae8 r5:82e58c00 r4:82ec6840 [<8026fc2c>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf8ddfb0 to 0xdf8ddff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fc2c r4:82ec6840 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2807 Comm: syslogd Not tainted 6.8.0-syzkaller #0 Hardware name: ARM-Versatile Express PC is at __unix_dgram_recvmsg+0x104/0x504 net/unix/af_unix.c:2431 LR is at 0x0 pc : [<8161b400>] lr : [<00000000>] psr: 60000013 sp : ec5d5da0 ip : ec5d5c58 fp : ec5d5e24 r10: 00000000 r9 : 835a0388 r8 : ec5d5dd0 r7 : 00000000 r6 : 835a0534 r5 : 835a0300 r4 : 8161b800 r3 : 8364bc00 r2 : 00000000 r1 : 00000000 r0 : 8445b000 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84072940 DAC: fffffffd Backtrace: [<8161b2fc>] (__unix_dgram_recvmsg) from [<8161b844>] (unix_dgram_recvmsg+0x44/0x4c net/unix/af_unix.c:2531) r10:00000001 r9:00000000 r8:01e5c1d0 r7:00000000 r6:83074000 r5:ec5d5e68 r4:8161b800 [<8161b800>] (unix_dgram_recvmsg) from [<8136a934>] (sock_recvmsg_nosec net/socket.c:1046 [inline]) [<8161b800>] (unix_dgram_recvmsg) from [<8136a934>] (sock_recvmsg+0x50/0x78 net/socket.c:1068) r4:8161b800 [<8136a8e4>] (sock_recvmsg) from [<8136a9fc>] (sock_read_iter+0xa0/0xf8 net/socket.c:1138) r7:82f46e40 r6:83074000 r5:ec5d5f08 r4:ec5d5ef0 [<8136a95c>] (sock_read_iter) from [<804f4368>] (call_read_iter include/linux/fs.h:2102 [inline]) [<8136a95c>] (sock_read_iter) from [<804f4368>] (new_sync_read fs/read_write.c:395 [inline]) [<8136a95c>] (sock_read_iter) from [<804f4368>] (vfs_read+0x2e4/0x314 fs/read_write.c:476) r7:00000000 r6:8364bc00 r5:000000ff r4:82f46e40 [<804f4084>] (vfs_read) from [<804f4de8>] (ksys_read+0xc4/0xf8 fs/read_write.c:619) r10:00000003 r9:8364bc00 r8:80200288 r7:000000ff r6:01e5c1d0 r5:82f46e40 r4:82f46e40 [<804f4d24>] (ksys_read) from [<804f4e2c>] (__do_sys_read fs/read_write.c:629 [inline]) [<804f4d24>] (ksys_read) from [<804f4e2c>] (sys_read+0x10/0x14 fs/read_write.c:627) r7:00000003 r6:01e5c2d0 r5:76f805a0 r4:fffffc00 [<804f4e1c>] (sys_read) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xec5d5fa8 to 0xec5d5ff0) 5fa0: fffffc00 76f805a0 00000000 01e5c1d0 000000ff 00000000 5fc0: fffffc00 76f805a0 01e5c2d0 00000003 00000000 01e5c1c8 76f4854c 76f48548 5fe0: 76f479f8 7efdfc70 76ebd2ec 76dcb2fc