BUG: scheduling while atomic: syz-executor.0/14494/0x00000002 Modules linked in: Preemption disabled at: [<80922d88>] gsmld_write+0x30/0x90 drivers/tty/n_gsm.c:3509 Kernel panic - not syncing: scheduling while atomic: panic_on_warn set ... CPU: 1 PID: 14494 Comm: syz-executor.0 Not tainted 6.3.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<817b16fc>] (dump_backtrace) from [<817b17f0>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:81d81a70 r6:82422c04 r5:60000093 r4:81d90180 [<817b17d8>] (show_stack) from [<817cde00>] (__dump_stack lib/dump_stack.c:88 [inline]) [<817b17d8>] (show_stack) from [<817cde00>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<817cddb8>] (dump_stack_lvl) from [<817cde24>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:8264dd14 [<817cde0c>] (dump_stack) from [<817b22e4>] (panic+0x11c/0x36c kernel/panic.c:340) [<817b21c8>] (panic) from [<802422c4>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8240c488 r2:00000001 r1:81d846a8 r0:81d81a70 r7:822adc00 [<80242240>] (check_panic_on_warn) from [<80275d10>] (__schedule_bug+0x88/0x9c kernel/sched/core.c:5852) [<80275c88>] (__schedule_bug) from [<817d1e6c>] (schedule_debug kernel/sched/core.c:5881 [inline]) [<80275c88>] (__schedule_bug) from [<817d1e6c>] (__schedule+0x9d8/0xc18 kernel/sched/core.c:6516) r5:ddde5c00 r4:00000000 [<817d1494>] (__schedule) from [<817d2108>] (schedule+0x5c/0xac kernel/sched/core.c:6698) r10:00000000 r9:00000000 r8:00000000 r7:00000002 r6:82429d3c r5:831f5080 r4:831f5080 [<817d20ac>] (schedule) from [<817d8ef0>] (schedule_timeout+0xd0/0x108 kernel/time/timer.c:2143) r5:831f5080 r4:7fffffff [<817d8e20>] (schedule_timeout) from [<817d5bf4>] (___down_common kernel/locking/semaphore.c:225 [inline]) [<817d8e20>] (schedule_timeout) from [<817d5bf4>] (__down_common+0x108/0x2b4 kernel/locking/semaphore.c:246) r6:82429d3c r5:831f5080 r4:7fffffff [<817d5aec>] (__down_common) from [<817d5db8>] (__down+0x18/0x1c kernel/locking/semaphore.c:254) r9:8630e000 r8:00000000 r7:a0000013 r6:86136c00 r5:00000000 r4:82429d3c [<817d5da0>] (__down) from [<817d5e08>] (down+0x4c/0x60 kernel/locking/semaphore.c:63) [<817d5dbc>] (down) from [<802ae9cc>] (console_lock+0x14/0x38 kernel/printk/printk.c:2609) r4:00000000 [<802ae9b8>] (console_lock) from [<8093565c>] (do_con_write+0x84/0x2028 drivers/tty/vt/vt.c:2852) [<809355d8>] (do_con_write) from [<80937640>] (con_write+0x14/0x28 drivers/tty/vt/vt.c:3244) r10:00000000 r9:8630e000 r8:00000000 r7:a0000013 r6:84f13580 r5:86136c00 r4:86136c00 [<8093762c>] (con_write) from [<80922db4>] (gsmld_write+0x5c/0x90 drivers/tty/n_gsm.c:3512) r5:00000000 r4:86136c00 [<80922d58>] (gsmld_write) from [<80914650>] (do_tty_write drivers/tty/tty_io.c:1018 [inline]) [<80922d58>] (gsmld_write) from [<80914650>] (file_tty_write.constprop.0+0x13c/0x2bc drivers/tty/tty_io.c:1089) r9:8630e000 r8:dff29ef0 r7:00000000 r6:86136c00 r5:00000000 r4:00000000 [<80914514>] (file_tty_write.constprop.0) from [<80914878>] (tty_write+0x14/0x18 drivers/tty/tty_io.c:1110) r10:00004004 r9:831f5080 r8:00000000 r7:dff29f68 r6:00000000 r5:8630e000 r4:80914864 [<80914864>] (tty_write) from [<804bca58>] (call_write_iter include/linux/fs.h:1851 [inline]) [<80914864>] (tty_write) from [<804bca58>] (new_sync_write fs/read_write.c:491 [inline]) [<80914864>] (tty_write) from [<804bca58>] (vfs_write+0x2c4/0x3bc fs/read_write.c:584) [<804bc794>] (vfs_write) from [<804bccb8>] (ksys_write+0x68/0xec fs/read_write.c:637) r10:00000004 r9:831f5080 r8:80200288 r7:00000000 r6:00000000 r5:8630e000 r4:8630e001 [<804bcc50>] (ksys_write) from [<804bcd4c>] (__do_sys_write fs/read_write.c:649 [inline]) [<804bcc50>] (ksys_write) from [<804bcd4c>] (sys_write+0x10/0x14 fs/read_write.c:646) r7:00000004 r6:0014c2b8 r5:00000000 r4:00000000 [<804bcd3c>] (sys_write) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xdff29fa8 to 0xdff29ff0) 9fa0: 00000000 00000000 00000004 00000000 00000000 00000000 9fc0: 00000000 00000000 0014c2b8 00000004 7e9f23ba 76b626d0 7e9f2534 76b6220c 9fe0: 76b62020 76b62010 00016fec 0004dfa0 Rebooting in 86400 seconds..